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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.152.2070" ID-GBIF-Dataset="6b5942f4-6ac4-4fa4-a92d-8341cc23d800" ID-PMC="PMC3234424" ID-Pensoft-Pub="1313-2970-152-43" ID-PubMed="22287905" ModsDocAuthor="" ModsDocDate="2011" ModsDocID="1313-2970-152-43" ModsDocOrigin="ZooKeys 152" ModsDocTitle="A taxonomic study on semifumata species-group of Fissocantharis Pic, with description of six new species from China and Myanmar (Coleoptera, Cantharidae)" checkinTime="1451249515404" checkinUser="pensoft" docAuthor="Yang, Yuxia &amp; Yang, Xingke" docDate="2011" docId="2B49065B26A10AD546A95ED1DAD9A4F1" docLanguage="en" docName="ZooKeys 152: 43-61" docOrigin="ZooKeys 152" docSource="http://dx.doi.org/10.3897/zookeys.152.2070" docTitle="Fissocantharis bimaculata Yang &amp; Yang, 2011, sp. n." docType="treatment" docVersion="4" lastPageNumber="53" masterDocId="A1115A030127FFD9FFA3FFECC4626B58" masterDocTitle="A taxonomic study on semifumata species-group of Fissocantharis Pic, with description of six new species from China and Myanmar (Coleoptera, Cantharidae)" masterLastPageNumber="61" masterPageNumber="43" pageNumber="53" updateTime="1668152952647" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>A taxonomic study on semifumata species-group of Fissocantharis Pic, with description of six new species from China and Myanmar (Coleoptera, Cantharidae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Yang, Yuxia</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Yang, Xingke</mods:namePart>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:title>ZooKeys</mods:title>
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<mods:date>2011</mods:date>
<mods:detail type="volume">
<mods:number>152</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>43</mods:start>
<mods:end>61</mods:end>
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<mods:url>http://dx.doi.org/10.3897/zookeys.152.2070</mods:url>
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<treatment ID-GBIF-Taxon="152032547" LSID="urn:lsid:zoobank.org:act:23308F99-71D6-40D9-BB4B-3B3F126A8DD8" httpUri="http://treatment.plazi.org/id/2B49065B26A10AD546A95ED1DAD9A4F1" lastPageNumber="53" pageId="10" pageNumber="53">
<subSubSection pageId="10" pageNumber="53" type="nomenclature">
<paragraph pageId="10" pageNumber="53">
<taxonomicName LSID="urn:lsid:zoobank.org:act:23308F99-71D6-40D9-BB4B-3B3F126A8DD8" class="Insecta" family="Cantharidae" genus="Fissocantharis" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Fissocantharis bimaculata" order="Coleoptera" pageId="10" pageNumber="53" phylum="Arthropoda" rank="species" species="bimaculata">Fissocantharis bimaculata</taxonomicName>
<taxonomicNameLabel pageId="10" pageNumber="53">sp. n.</taxonomicNameLabel>
Figs 926-28
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="53" type="type material">
<paragraph pageId="10" pageNumber="53">Type material.</paragraph>
<paragraph pageId="10" pageNumber="53">Holotype ♂, CHINA, Sichuan, Mt. Emei, 1600m, 31.v.1979, leg. Jinwen Shang (IZAS). Paratype: 1♂, same locality, 1600-2100m, 24.vi.1955, leg. Le Wu (IZAS) [both transliterated from Chinese labels].</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="53" type="distribution">
<paragraph pageId="10" pageNumber="53">Distribution.</paragraph>
<paragraph pageId="10" pageNumber="53">China (Sichuan).</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="53" type="diagnosis">
<paragraph pageId="10" pageNumber="53">Diagnosis.</paragraph>
<paragraph pageId="10" pageNumber="53">
This new species is related to
<taxonomicName class="Insecta" family="Cantharidae" genus="Fissocantharis" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Fissocantharis semifumatoides" order="Coleoptera" pageId="10" pageNumber="53" phylum="Arthropoda" rank="species" species="semifumatoides">Fissocantharis semifumatoides</taxonomicName>
(
<normalizedToken originalValue="Švihla">Svihla</normalizedToken>
, 2005), but distinguishable by the pronotum distinctly wider than long; elytra each with a black marking at apex, lateral margins distinctly diverging posteriorly.
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="53" type="description">
<paragraph pageId="10" pageNumber="53">Description.</paragraph>
<paragraph pageId="10" pageNumber="53">Male (Fig. 9). Body yellow, mouthparts dark brown, antennae black, elytra each with a large rounded black marking at apex, femora slightly darkened at apices, tibiae black along upper sides, tarsi black, meso- and metasterna and abdomen black, posterior and lateral margins of each abdominal ventrite and the whole last ventrite yellow.</paragraph>
<paragraph pageId="10" pageNumber="53">Head subquadrate, evenly narrowed behind eyes, dorsum densely and finely punctate, eyes moderately protruding, breadth across eyes slightly narrower than anterior margin of pronotum, terminal maxillary palpomeres long-triangular, widest near apices, antennae filiform and simple, extending to apical one-fifth of elytra, antennomeres II slightly widened apically, about twice as long as wide at apices, III about twice as long as II, V longest, XI slightly shorter than X.</paragraph>
<paragraph pageId="10" pageNumber="53">Pronotum subquadrate, distinctly wider than long, widest at base, anterior margin arcuate, lateral margins diverging posteriorly, posterior margin almost straight, anterior angles rounded, posterior angles nearly vertical, disc densely and finely punctate as that on head, distinctly convex on posterolateral parts.</paragraph>
<paragraph pageId="10" pageNumber="53">Elytra about 5 times longer than pronotum, 2.5 times longer than humeral width, lateral margins distinctly diverging posteriorly, disc slightly sparsely and largely punctate than that on pronotum.</paragraph>
<paragraph pageId="10" pageNumber="53">Legs: pro- and mesotarsal claws bifid, with lower claws slightly shorter than upper ones.</paragraph>
<paragraph pageId="10" pageNumber="53">Aedeagus (Figs 26-28): conjoint dorsal plate of parameres with median emargination of apical margin narrow and distinctly deeper than lateral ones, protuberances between median and lateral emarginations wide and rounded at apices, almost as long as ventral process of each paramere in dorsal view; ventral process of each paramere wide, slightly turned outwards at apex in lateral view; median lobe without any sclerotized projection in dorsum.</paragraph>
<paragraph pageId="10" pageNumber="53">Body length: 9.0-11.0 mm; width: 2.5-3.0 mm.</paragraph>
<paragraph pageId="10" pageNumber="53">Female. Unknown.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="53" type="etymology">
<paragraph pageId="10" pageNumber="53">Etymology.</paragraph>
<paragraph pageId="10" pageNumber="53">This new specific name is derived from Latin bi- (two) and macula (marking), referring to its elytra each with a black marking at apex.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="53" type="remarks">
<paragraph pageId="10" pageNumber="53">Remarks.</paragraph>
<paragraph pageId="10" pageNumber="53">
The metalegs of both holotype and paratype and antennomeres
<normalizedToken originalValue="III–XI">III-XI</normalizedToken>
of paratype are missing. Besides, the left basal piece of holotype and basal pieces of aedeagus of paratype are damaged.
</paragraph>
</subSubSection>
</treatment>
</document>

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<taxonomicName id="64E04D0E4A03FF9108ACFF23FDD2FF27" authority="(Wheeler, 1916)" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[151,606,222,248]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="2" pageNumber="139" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A03FF9108ACFF23FDD2FF27" bold="true" box="[151,606,222,248]" pageId="2" pageNumber="139">
<emphasis id="9194EA9F4A03FF9108ACFF23FE1FFF27" bold="true" box="[151,403,222,248]" italics="true" pageId="2" pageNumber="139">Strumigenys thaxteri</emphasis>
(
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)
</emphasis>
</taxonomicName>
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</paragraph>
<paragraph id="A35F368D4A03FF9108ACFEFCFEA0FEC6" blockId="2.[151,606,222,282]" box="[151,300,257,282]" pageId="2" pageNumber="139">
(
<figureCitation id="3BDB2A084A03FF9108A4FEFCFEA8FEC6" box="[159,292,257,282]" captionStart="FIGURE 1" captionStartId="3.[151,250,1608,1630]" captionTargetBox="[206,1380,628,1584]" captionTargetId="figure@3.[206,1380,628,1584]" captionTargetPageId="3" captionText="FIGURE 1. Strumigenys thaxteri, worker. Figs. (A–C) Specimen RBINS 3871503. (A) Dorsal view of head. (B) Lateral view of body. (C) Dorsal view of body. Fig (D) Specimen deposited in DZUP, SEM image of tarsal claw." httpUri="https://zenodo.org/record/1294207/files/figure.png" pageId="2" pageNumber="139">Figs. 1A–D</figureCitation>
)
</paragraph>
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<treatmentCitationGroup id="83F011A34A03FF9108ACFEB4FC91FE80" box="[151,797,329,351]" pageId="2" pageNumber="139">
<taxonomicName id="64E04D0E4A03FF9108ACFEB4FDC6FE80" authority="Wheeler, 1916: 327" authorityName="Wheeler" authorityPageNumber="327" authorityYear="1916" box="[151,586,329,351]" class="Insecta" family="Formicidae" genus="Codiomyrmex" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="2" pageNumber="139" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A03FF9108ACFEB4FEF6FE80" box="[151,378,329,351]" italics="true" pageId="2" pageNumber="139">Codiomyrmex thaxteri</emphasis>
<treatmentCitation id="2241109C4A03FF9109BBFEB4FDC6FE80" author="" box="[384,586,329,351]" page="327" pageId="2" pageNumber="139">
<bibRefCitation id="C7714B7C4A03FF9109BBFEB4FD94FE80" box="[384,536,329,351]" pageId="2" pageNumber="139" refId="ref9045" refString="Wheeler, W. M. (1916) Ants collected in Trinidad by Professor Roland Thaxter, Mr. F. W. Urich, and others. Bulletin of the Museum of Comparative Zoology, 60, 323 - 330." type="journal article">Wheeler, 1916</bibRefCitation>
: 327
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,
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, w., Trinidad.
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</paragraph>
<paragraph id="A35F368D4A03FF9108ACFE94FC2DFEA1" blockId="2.[151,1206,329,412]" box="[151,929,360,382]" pageId="2" pageNumber="139">
<treatmentCitationGroup id="83F011A34A03FF9108ACFE94FC2DFEA1" box="[151,929,360,382]" pageId="2" pageNumber="139">
<taxonomicName id="64E04D0E4A03FF9108ACFE94FE32FEA1" ID-CoL="4QQDV" authority="(Wheeler)" authorityName="Wheeler" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[151,446,360,382]" class="Insecta" family="Formicidae" genus="Pyramica" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="2" pageNumber="139" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A03FF9108ACFE94FEC3FEA1" box="[151,335,360,382]" italics="true" pageId="2" pageNumber="139">Pyramica thaxteri</emphasis>
(Wheeler)
</taxonomicName>
. Combination in
<taxonomicName id="64E04D0E4A03FF910A57FE94FC11FEA1" ID-CoL="75X9" authority=": Bolton, 1999: 1672" authorityName=": Bolton, 1999:" authorityPageNumber="1672" authorityYear="1672" box="[620,925,360,382]" class="Insecta" family="Formicidae" genus="Pyramica" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="2" pageNumber="139" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A03FF910A57FE94FD43FEA1" box="[620,719,361,382]" italics="true" pageId="2" pageNumber="139">Pyramica</emphasis>
:
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<bibRefCitation id="C7714B7C4A03FF910AE7FE95FCE8FEA1" box="[732,868,360,382]" pageId="2" pageNumber="139" refId="ref7715" refString="Bolton, B. (1999) Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). Journal of Natural History, 33, 1639 - 1689. https: // doi. org / 10.1080 / 002229399299798" type="journal article">Bolton, 1999</bibRefCitation>
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.
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<paragraph id="A35F368D4A03FF9108ACFE7AFB3AFE43" blockId="2.[151,1206,329,412]" box="[151,1206,390,412]" pageId="2" pageNumber="139">
<treatmentCitationGroup id="83F011A34A03FF9108ACFE7AFB3AFE43" box="[151,1206,390,412]" pageId="2" pageNumber="139">
<taxonomicName id="64E04D0E4A03FF9108ACFE7AFE54FE43" authority="(Wheeler)" authorityName="Wheeler" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[151,472,390,412]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="2" pageNumber="139" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A03FF9108ACFE7AFEE4FE43" box="[151,360,390,412]" italics="true" pageId="2" pageNumber="139">Strumigenys thaxteri</emphasis>
(Wheeler)
</taxonomicName>
. Combination in
<taxonomicName id="64E04D0E4A03FF910ABDFE7AFB3EFE43" ID-CoL="7PJL" authority=": Baroni Urbani &amp; De Andrade, 2007: 129" authorityName=": Baroni Urbani &amp; De Andrade" authorityPageNumber="129" authorityYear="2007" box="[646,1202,390,412]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="2" pageNumber="139" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A03FF910ABDFE7AFC8EFE43" box="[646,770,391,412]" italics="true" pageId="2" pageNumber="139">Strumigenys</emphasis>
:
<treatmentCitation id="2241109C4A03FF910B2BFE7BFB3EFE43" author="" box="[784,1202,390,412]" page="129" pageId="2" pageNumber="139">
<bibRefCitation id="C7714B7C4A03FF910B2BFE7BFBF3FE43" box="[784,1151,390,412]" pageId="2" pageNumber="139" refId="ref7570" refString="Baroni Urbani, C. &amp; De Andrade, M. L. (2007) The ant tribe Dacetini: limits and constituent genera, with descriptions of new species (Hymenoptera, Formicidae). Annali del Museo Civico di Storia Naturale Giacomo Doria, 99, 1 - 191." type="journal article">Baroni Urbani &amp; De Andrade, 2007</bibRefCitation>
: 129
</treatmentCitation>
</taxonomicName>
.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="EBFA65064A03FF9408ACFE35FCE5FE72" lastPageId="7" lastPageNumber="144" pageId="2" pageNumber="139" type="description">
<paragraph id="A35F368D4A03FF9108ACFE35FCD0FDF5" blockId="2.[151,1437,456,2030]" pageId="2" pageNumber="139">
<emphasis id="9194EA9F4A03FF9108ACFE35FDA3FE3F" bold="true" box="[151,559,456,481]" italics="true" pageId="2" pageNumber="139">Worker measurements and indices.</emphasis>
HL 0.63–0.65; HW 0.50–0.57; ML 0.10–0.18; EL 0.08–0.10; SL 0.32–0.33; PW 0.37–0.39; WL 0.67–0.76;
<collectingCountry id="DBF7761D4A03FF9109CDFE13FD96FDDA" box="[502,538,494,517]" name="Philippines" pageId="2" pageNumber="139">PH</collectingCountry>
0.18–0.29; PL 0.33–0.39; DPW
<quantity id="64189B684A03FF910BB3FE13FBA1FDDA" box="[904,1069,494,518]" metricMagnitude="-4" metricUnit="m" metricValue="1.9" metricValueMax="2.0" metricValueMin="1.7999999999999998" pageId="2" pageNumber="139" unit="mm" value="0.19" valueMax="0.2" valueMin="0.18">0.18–0.20 mm</quantity>
. CI 0.79–0.90; MI 0.20–0.33; OI 0.14–0.19; SI 0.57–0.65; LPI 0.53–0.78; DPI 0.47–0.63. (n=5).
</paragraph>
<paragraph id="A35F368D4A03FF9108FCFDC9FCC4FA56" blockId="2.[151,1437,456,2030]" pageId="2" pageNumber="139">
<emphasis id="9194EA9F4A03FF9108FCFDC9FE21FD92" bold="true" box="[199,429,564,589]" italics="true" pageId="2" pageNumber="139">Worker description.</emphasis>
Head in frontal view longer than broad; posterior cephalic margin laterally convex to straight, medially with shallow emargination framed by raised lamella; head widest posteriorly with broad concavity between posterolateral cephalic corner and frontal carina, cephalic lateral margins gradually converging anteriorly, each margin slightly sinuous; frontal carina projects laterally feebly as broad convexity. Frontal carina in cephalic dorsal view forms elongate surface with lateral margin higher than internal margin. Cephalic dorsum posteromedially markedly convex; most of cephalic surface rugose-reticulate except for clypeus and brief strip posteriorly of epistomal suture mostly smooth with scattered punctae. Clypeus longer than broad, posterior margin forms acute angle, margin broadly convex. Mandibles robust, mandibular lateral margin broadly convex, in lateral view mandibular median width is half its length. Mandibular dorsal surface smooth and shining, convex, with scattered piligeous punctulae, especially laterally; masticatory margin with series of 10–13 small interlocking teeth, apical tooth largest; ventral surface glabrous. Labrum slightly longer than broad in dorsal view (with mandibles open), wider basally than apicad, laterally broadly convex, apex bilobulate with fine incision. Width of labrum less than one-third that of clypeus in cephalic full-face view. Labrum in cross section at mid-length with convex dorsal margin and very concave ventral margin, in ventral view the lateral margin forms an elongate, column-like structure, apically bluntly rounded. Scattered fine hairs present along sides of labrum, apex with tuft of fine hairs shorter than half the basal labral width. Clypeal dorsum with appressed hairs directed meso-anteriorly; mandible with sparse fine, appressed hairs directed towards masticatory margin. In cephalic lateral view frontal carina extends posteriorly to posterolateral cephalic corner, lateral cephalic surface reticulose-punctate; eye protuberant, visible in cephalic frontal view, with 6–7 ommatidia across. Cephalic ventral surface posteriorly convex, coarsely rugose, distinct anteroventral tooth present close to mandibular insertion. Scape dorsal surface rugulose, ventral surface of scape mostly densely reticulate rugulose with smooth and shining elongate area that extends two-thirds along posterior margin of scape length, widest at apex and becoming progressively slender basally. Shining area light brown in contrast to surrounding darker sculpturing. Scapes do not reach posterior cephalic margin, in crosssection dorsal surface convex, ventral surface flat to concave.
</paragraph>
<paragraph id="A35F368D4A03FF9108FCFA6BFACCF8E5" blockId="2.[151,1437,456,2030]" pageId="2" pageNumber="139">Mesosoma in lateral view with sinuous dorsal margin, promesonotum broadly convex, posteriorly broadly concave with minor irregularities on propodeum; lateral mesosomal surface mostly smooth and shining, pronotum with broad rugae, mostly transverse to oblique on dorsolateral surface and longitudinal along ventrolateral surface. Propodeal spine elongate and acute, extending posteriorly as low keel. Mesopleuron and anterior metapleuron mostly smooth, with very broad undulations, and shining, anepisternum with reduced, irregular undulations; mesopleuron with lamella along anteroventral margin. Posterior metapleuron with series of depressions and punctae, densest close to metapleural gland. Lateral propodeal face mostly rugulose, spiracle directed posterolaterally, separated from posterior propodeal margin by approximately one diameter. In dorsal view mesosoma widest anteriorly, anterolaterally strongly angular, posteriorly converging. Most of pronotal dorsum smooth and shining with scattered punctae, lateral margins with shallow rugosities; mesonotum strongly rugulose with median longitudinal crest, propodeal dorsum rugose to areolate. Dorsal and declivitous propodeal faces separated by transverse fine carina, declivity anteriorly reticulate-areolate, posteriorly smooth and shining.</paragraph>
<paragraph id="A35F368D4A03FF9008FCF8B8FEDDFDE2" blockId="2.[151,1437,456,2030]" lastBlockId="3.[151,1437,151,573]" lastPageId="3" lastPageNumber="140" pageId="2" pageNumber="139">Lateral face of procoxa transversely striate on basal half up to two-thirds, apically rugulose. Dorsal surface of meso and metacoxae rugulose. Tibiae and femora mostly smooth and shining with scattered punctulae. Femora basally densely reticulate-areolate, extension of reticulate area increasing from profemur to metafemur. Petiolar node in lateral view with abrupt, weakly convex anterior margin, anterodorsal margin convex; postpetiolar margin evenly convex. Peduncle of petiole with flattened dorsal surface, abruptly dropping laterally; lateral surface with longitudinal carinae, swollen at spiracle; dorsal and lateral surface reticulate-areolate. Node of petiole rugose, postpetiolar dorsum rugulose with scattered longitudinal striae. Well-developed spongiform tissue present along length of petiolar ventrum, lateral margins of petiolar node, posterolateral margins of postpetiole, and lateral margins of abdominal sternite IV. Anteromedian region of abdominal sternite IV with thick tuft of hairs, resembling spongiform tissue. Basigastral costulae distinct, mostly along anterolateral margins, length under onefourth of surface of abdominal tergite IV. Gaster dorsum smooth and shining except for scattered punctulae. Abundant long and silky hairs cover most of dorsum of cephalic capsule and mesosoma (except for propodeal dorsum), petiolar node, postpetiole and gastral tergum. Legs, including tarsi, also with abundant long hairs, hairs shortest on protarsi. Protarsal claws shorter and relatively more slender than meso- and metatarsal claws. Hairs on cephalic dorsum longest posteriorly, ventral cephalic surface also with abundant hairs but all relatively shorter. Scape and funiculus with abundant decumbent to appressed hairs, none standing. Body mostly black, legs dark brown to brown.</paragraph>
<caption id="F79F66054A02FF9008ACF9B5FB04F9A3" httpUri="https://zenodo.org/record/1294207/files/figure.png" pageId="3" pageNumber="140" startId="3.[151,250,1608,1630]" targetBox="[206,1380,628,1584]" targetPageId="3">
<paragraph id="A35F368D4A02FF9008ACF9B5FB04F9A3" blockId="3.[151,1436,1608,1660]" pageId="3" pageNumber="140">
<emphasis id="9194EA9F4A02FF9008ACF9B5FE9FF982" bold="true" box="[151,275,1608,1630]" pageId="3" pageNumber="140">FIGURE 1.</emphasis>
<taxonomicName id="64E04D0E4A02FF900921F9B4FE67F981" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[282,491,1608,1630]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="3" pageNumber="140" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A02FF900921F9B4FE67F981" box="[282,491,1608,1630]" italics="true" pageId="3" pageNumber="140">Strumigenys thaxteri</emphasis>
</taxonomicName>
, worker. Figs. (A–C) Specimen RBINS 3871503. (A) Dorsal view of head. (B) Lateral view of body. (C) Dorsal view of body. Fig (D) Specimen deposited in DZUP, SEM image of tarsal claw.
</paragraph>
</caption>
<paragraph id="A35F368D4A02FF9008FCF954FA9DF83E" blockId="3.[151,1437,1705,2018]" pageId="3" pageNumber="140">
<materialsCitation id="13883CD04A02FF9008FCF954FC8AF8D6" ID-GBIF-Occurrence="1851012875" collectingDate="2014-10-26" collectionCode="ARCE, DZUP" collectorName="J. Lattke" country="Ecuador" county="Specimens" elevation="1060" location="Orange Trail" municipality="Posada Copalinga" pageId="3" pageNumber="140" specimenCount="1" stateProvince="Zamora-Chinchipe">
<emphasis id="9194EA9F4A02FF9008FCF954FE26F91E" bold="true" box="[199,426,1705,1730]" italics="true" pageId="3" pageNumber="140">
<collectingCounty id="4A3E4E014A02FF9008FCF954FECEF91D" box="[199,322,1705,1730]" pageId="3" pageNumber="140">Specimens</collectingCounty>
studied.
</emphasis>
<collectingCountry id="DBF7761D4A02FF900982F954FD94F91D" box="[441,536,1705,1730]" name="Ecuador" pageId="3" pageNumber="140">Ecuador</collectingCountry>
,
<collectingRegion id="6124F86F4A02FF900A10F954FC8EF91D" box="[555,770,1705,1730]" country="Ecuador" name="Zamora-Chinchipe" pageId="3" pageNumber="140">Zamora-Chinchipe</collectingRegion>
,
<locationDeviation id="B2ED2FAF4A02FF900B2EF954FB88F91E" box="[789,1028,1705,1730]" pageId="3" pageNumber="140">
<quantity id="64189B684A02FF900B2EF954FCD0F91D" box="[789,860,1705,1730]" metricMagnitude="3" metricUnit="m" metricValue="2.7" pageId="3" pageNumber="140" unit="km" value="2.7">2.7km</quantity>
SSE Zamora
</locationDeviation>
,
<collectingMunicipality id="433BACF74A02FF900C2CF954FB67F91D" box="[1047,1259,1705,1730]" pageId="3" pageNumber="140">Posada Copalinga</collectingMunicipality>
,
<location id="A63F60564A02FF900CC5F957FA14F91D" LSID="urn:lsid:plazi:treatment:2B49879B4A03FF9408ACFF23FCE5FE72:A63F60564A02FF900CC5F957FA14F91D" box="[1278,1432,1705,1730]" country="Ecuador" county="Specimens" municipality="Posada Copalinga" name="Orange Trail" pageId="3" pageNumber="140" stateProvince="Zamora-Chinchipe">Orange Trail</location>
,
<quantity id="64189B684A02FF9008ACF930FF6BF939" box="[151,231,1741,1766]" metricMagnitude="3" metricUnit="m" metricValue="1.06" pageId="3" pageNumber="140" unit="m" value="1060.0">
<elevation id="28CDD1BE4A02FF9008ACF930FF6BF939" box="[151,231,1741,1766]" metricMagnitude="3" metricUnit="m" metricValue="1.06" pageId="3" pageNumber="140" unit="m" value="1060.0">1060m</elevation>
</quantity>
, -4.09106° -78.96210°,
<date id="D75E104D4A02FF9009CFF930FDE1F939" box="[500,621,1741,1766]" pageId="3" pageNumber="140" value="2014-10-26">
<collectingDate id="C71AE9A54A02FF9009CFF930FDE1F939" box="[500,621,1741,1766]" pageId="3" pageNumber="140" value="2014-10-26">26.X.2014</collectingDate>
</date>
, M. Tuza, M. Vélez, C. Gómez, G Piedra,
<collectorName id="0E15535B4A02FF900C71F933FB26F939" box="[1098,1194,1741,1766]" pageId="3" pageNumber="140">J. Lattke</collectorName>
3697; point-mounted voucher specimens are deposited in
<collectionCode id="C5F1AE484A02FF900A0EF90FFD0CF8D5" box="[565,640,1778,1802]" pageId="3" pageNumber="140">ARCE</collectionCode>
and
<collectionCode id="C5F1AE484A02FF900A82F90FFC8AF8D6" box="[697,774,1778,1801]" country="Brazil" httpUri="http://grbio.org/cool/5xp9-edpx" name="Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure" pageId="3" pageNumber="140">DZUP</collectionCode>
</materialsCitation>
; thirteen ethanol preserved specimens are in DZUP.
<materialsCitation id="13883CD04A02FF900D65F90FFDCCF8AA" ID-GBIF-Occurrence="1851012874" collectingDate="2009-03-19" collectionCode="RBINS" collectorName="Hand-collecting, T &amp; Delsinne &amp; Same" country="Mauritius" elevation="1030" location="Same" pageId="3" pageNumber="140" specimenCount="1">
<location id="A63F60564A02FF900D65F90FFA10F8D5" LSID="urn:lsid:plazi:treatment:2B49879B4A03FF9408ACFF23FCE5FE72:A63F60564A02FF900D65F90FFA10F8D5" box="[1374,1436,1778,1802]" country="Mauritius" name="Same" pageId="3" pageNumber="140">Same</location>
data except: Posada Copalinga, Blue Trail,
<quantity id="64189B684A02FF900A94F8EBFD73F8F1" box="[687,767,1814,1838]" metricMagnitude="3" metricUnit="m" metricValue="1.03" pageId="3" pageNumber="140" unit="m" value="1030.0">
<elevation id="28CDD1BE4A02FF900A94F8EBFD73F8F1" box="[687,767,1814,1838]" metricMagnitude="3" metricUnit="m" metricValue="1.03" pageId="3" pageNumber="140" unit="m" value="1030.0">1030m</elevation>
</quantity>
, -4.09122° -78.96069°,
<date id="D75E104D4A02FF900C1CF8EBFB2BF8F1" box="[1063,1191,1814,1838]" pageId="3" pageNumber="140" value="2009-03-19">
<collectingDate id="C71AE9A54A02FF900C1CF8EBFB2BF8F1" box="[1063,1191,1814,1838]" pageId="3" pageNumber="140" value="2009-03-19">19.III.2009</collectingDate>
</date>
,
<collectorName id="0E15535B4A02FF900C80F8E8FA15F8F2" box="[1211,1433,1813,1838]" pageId="3" pageNumber="140">Hand-collecting, T</collectorName>
.
<collectorName id="0E15535B4A02FF9008ACF8C4FF72F88D" box="[151,254,1849,1874]" pageId="3" pageNumber="140">Delsinne</collectorName>
; 52 ethanol preserved specimens are deposited in
<collectionCode id="C5F1AE484A02FF900B14F8C7FC0DF88D" box="[815,897,1850,1874]" country="Belgium" httpUri="http://biocol.org/urn:lsid:biocol.org:col:35271" name="Royal Belgian Institute of Natural Sciences" pageId="3" pageNumber="140">RBINS</collectionCode>
(col-ID
<quantity id="64189B684A02FF900BD9F8C4FBCAF88D" box="[994,1094,1849,1874]" metricMagnitude="2" metricUnit="m" metricValue="9.012428" pageId="3" pageNumber="140" unit="in" value="35482.0">35482 in</quantity>
<collectingCountry id="DBF7761D4A02FF900C76F8C4FB26F88D" box="[1101,1194,1849,1874]" name="Mauritius" pageId="3" pageNumber="140">Maurice</collectingCountry>
Leponce’s database).
<collectorName id="0E15535B4A02FF9008ACF8A3FF59F8A9" box="[151,213,1886,1910]" pageId="3" pageNumber="140">Same</collectorName>
data as the previous one, except
</materialsCitation>
:
<date id="D75E104D4A02FF900A71F8A3FD47F8A9" box="[586,715,1886,1910]" pageId="3" pageNumber="140" value="2010-03-10">10.III.2010</date>
,
<quantity id="64189B684A02FF900AEDF8A0FC90F8A9" box="[726,796,1885,1910]" metricMagnitude="-1" metricUnit="m" metricValue="2.5" pageId="3" pageNumber="140" unit="m" value="0.25">0.25m</quantity>
² Winkler sample extracted during 48h, J. Jacquemin; one point-mounted and photographed specimen, deposited in RBINS (col-ID
<quantity id="64189B684A02FF900BE7F87CFBCDF845" box="[988,1089,1921,1946]" metricMagnitude="2" metricUnit="m" metricValue="9.83361" pageId="3" pageNumber="140" unit="in" value="38715.0">38715 in</quantity>
ML’s database). Same data as the previous one, except:
<date id="D75E104D4A02FF900986F85BFD97F861" box="[445,539,1958,1982]" pageId="3" pageNumber="140" value="2010-03">III.2010</date>
, vegetation beating; one specimen deposited in RBINS (col-ID
<quantity id="64189B684A02FF900CCEF85BFAD6F861" box="[1269,1370,1957,1982]" metricMagnitude="2" metricUnit="m" metricValue="9.861042" pageId="3" pageNumber="140" unit="in" value="38823.0">38823 in</quantity>
ML’s database). Measurements and derived indices calculated from mounted specimens deposited in DZUP.
</paragraph>
<paragraph id="A35F368D4A05FF9708FCFF6AFCB0FE2A" blockId="4.[151,1437,151,501]" pageId="4" pageNumber="141">
<emphasis id="9194EA9F4A05FF9708FCFF6AFE61FF70" bold="true" box="[199,493,151,176]" italics="true" pageId="4" pageNumber="141">Morphology and identity.</emphasis>
Wheeler’s description is enough to satisfactorily determine the species, especially on account of several very distinctive characters such as the long silky, filiform hairs, relatively massive mandibles and the cephalic anteroventral tooth.
<bibRefCitation id="C7714B7C4A05FF970A07FF22FD57FF27" box="[572,731,223,248]" pageId="4" pageNumber="141" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton (2000)</bibRefCitation>
offers a more thorough definition of the
<taxonomicName id="64E04D0E4A05FF970C95FF1DFA89FF27" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1198,1285,224,248]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A05FF970C95FF1DFA89FF27" box="[1198,1285,224,248]" italics="true" pageId="4" pageNumber="141">thaxteri</emphasis>
</taxonomicName>
group and
<taxonomicName id="64E04D0E4A05FF970DBCFF1DFF62FEC3" baseAuthorityName="Wheeler" baseAuthorityYear="1916" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A05FF970DBCFF1DFF62FEC3" italics="true" pageId="4" pageNumber="141">S. thaxteri</emphasis>
</taxonomicName>
itself and the present specimens all agree with Bolton's defining traits. Nevertheless, prior to this study both species of the
<taxonomicName id="64E04D0E4A05FF970956FED5FE48FE9F" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[365,452,296,320]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A05FF970956FED5FE48FE9F" box="[365,452,296,320]" italics="true" pageId="4" pageNumber="141">thaxteri</emphasis>
</taxonomicName>
group were known from a scant number of specimens and in the case of
<taxonomicName id="64E04D0E4A05FF970CCAFED5FAEFFE9F" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1265,1379,296,320]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A05FF970CCAFED5FAEFFE9F" box="[1265,1379,296,320]" italics="true" pageId="4" pageNumber="141">S. thaxteri</emphasis>
</taxonomicName>
only from the
<typeStatus id="7C5B882F4A05FF9708C6FEB0FEA1FEBA" box="[253,301,333,357]" pageId="4" pageNumber="141">type</typeStatus>
series, all from the same locality and probably even from the same nest. The new specimens reported here permit a consideration of infraspecific morphological variation.
<tableCitation id="EE6203364A05FF970B9CFE92FC70FE57" box="[935,1020,367,392]" captionStart="TABLE 1" captionStartId="4.[151,239,548,571]" captionText="TABLE 1. Comparative metrics of S. thaxteri specimens. The acronyms in the Metrics column are defined in Materials and Methods. If a row in the Trinidad column has two values, they represent two syntype workers measured by Bolton (2000: 243), and if only one value is mentioned, it is from measuring specimen CASENT0900194. The Guyana column denotes values measured from the image of specimen USNMENT00441066. The Ecuador column denotes values from measuring 5 specimens from the series presently described. N/A means the image did not permit a view of the part for measuring." pageId="4" pageNumber="141">Table 1</tableCitation>
compares the metrics between these ants and it is evident that in most cases the values either overlap or form a continuum with the exception of a minor gap for LPI between the Ecuadorian and other specimens. Given the limited number of specimens and populations represented, it seems likely more overlap could be expected.
</paragraph>
<caption id="F79F66054A05FF9708ACFDD9FE81FD04" pageId="4" pageNumber="141">
<paragraph id="A35F368D4A05FF9708ACFDD9FE81FD04" blockId="4.[151,1436,547,731]" pageId="4" pageNumber="141">
<emphasis id="9194EA9F4A05FF9708ACFDD9FE86FDE4" bold="true" box="[151,266,548,571]" pageId="4" pageNumber="141">TABLE 1.</emphasis>
Comparative metrics of
<taxonomicName id="64E04D0E4A05FF970A2DFDDEFD08FDE4" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[534,644,547,571]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A05FF970A2DFDDEFD08FDE4" box="[534,644,547,571]" italics="true" pageId="4" pageNumber="141">S. thaxteri</emphasis>
</taxonomicName>
specimens. The acronyms in the Metrics column are defined in Materials and Methods. If a row in the Trinidad column has two values, they represent two syntype workers measured by Bolton (2000: 243), and if only one value is mentioned, it is from measuring specimen CASENT0900194. The Guyana column denotes values measured from the image of specimen USNMENT00441066. The Ecuador column denotes values from measuring 5 specimens from the series presently described. N/A means the image did not permit a view of the part for measuring.
</paragraph>
</caption>
<paragraph id="A35F368D4A05FF9708A4FD0BFB45FA14" pageId="4" pageNumber="141">
<table id="D1E0C42D4A05006C08A4FD0BFB45FA14" box="[159,1225,758,1483]" gridcols="4" gridrows="18" pageId="4" pageNumber="141">
<tr id="1DD034CF4A05006C08A4FD0BFB45FCD3" box="[159,1225,758,780]" gridrow="0" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FD0BFEA7FCD3" box="[159,299,758,780]" gridcol="0" gridrow="0" pageId="4" pageNumber="141">Metrics (mm)</th>
<th id="5E015DB34A05006C09DBFD0BFDCAFCD3" box="[480,582,758,780]" gridcol="1" gridrow="0" pageId="4" pageNumber="141">Trinidad</th>
<th id="5E015DB34A05006C0B19FD0BFCFDFCD3" box="[802,881,758,780]" gridcol="2" gridrow="0" pageId="4" pageNumber="141">Guyana</th>
<th id="5E015DB34A05006C0C58FD0BFB45FCD3" box="[1123,1225,758,780]" gridcol="3" gridrow="0" pageId="4" pageNumber="141">Ecuador</th>
</tr>
<tr id="1DD034CF4A05006C08A4FCDDFB45FCE9" box="[159,1225,800,822]" gridrow="1" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FCDDFEA7FCE9" box="[159,299,800,822]" gridcol="0" gridrow="1" pageId="4" pageNumber="141">HL</th>
<td id="5E015DB34A05006C09DBFCDDFDCAFCE9" box="[480,582,800,822]" gridcol="1" gridrow="1" pageId="4" pageNumber="141">0.64–0.68</td>
<td id="5E015DB34A05006C0B19FCDDFCFDFCE9" box="[802,881,800,822]" gridcol="2" gridrow="1" pageId="4" pageNumber="141">0.67</td>
<td id="5E015DB34A05006C0C58FCDDFB45FCE9" box="[1123,1225,800,822]" gridcol="3" gridrow="1" pageId="4" pageNumber="141">0.63–0.65</td>
</tr>
<tr id="1DD034CF4A05006C08A4FCB4FB45FC80" box="[159,1225,841,863]" gridrow="2" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FCB4FEA7FC80" box="[159,299,841,863]" gridcol="0" gridrow="2" pageId="4" pageNumber="141">HW</th>
<td id="5E015DB34A05006C09DBFCB4FDCAFC80" box="[480,582,841,863]" gridcol="1" gridrow="2" pageId="4" pageNumber="141">0.58–0.60</td>
<td id="5E015DB34A05006C0B19FCB4FCFDFC80" box="[802,881,841,863]" gridcol="2" gridrow="2" pageId="4" pageNumber="141">0.55</td>
<td id="5E015DB34A05006C0C58FCB4FB45FC80" box="[1123,1225,841,863]" gridcol="3" gridrow="2" pageId="4" pageNumber="141">0.50–0.57</td>
</tr>
<tr id="1DD034CF4A05006C08A4FC8FFB45FC57" box="[159,1225,882,904]" gridrow="3" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FC8FFEA7FC57" box="[159,299,882,904]" gridcol="0" gridrow="3" pageId="4" pageNumber="141">ML</th>
<td id="5E015DB34A05006C09DBFC8FFDCAFC57" box="[480,582,882,904]" gridcol="1" gridrow="3" pageId="4" pageNumber="141">0.13–0.14</td>
<td id="5E015DB34A05006C0B19FC8FFCFDFC57" box="[802,881,882,904]" gridcol="2" gridrow="3" pageId="4" pageNumber="141">0.14</td>
<td id="5E015DB34A05006C0C58FC8FFB45FC57" box="[1123,1225,882,904]" gridcol="3" gridrow="3" pageId="4" pageNumber="141">0.10–0.18</td>
</tr>
<tr id="1DD034CF4A05006C08A4FC61FB45FC6D" box="[159,1225,924,946]" gridrow="4" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FC61FEA7FC6D" box="[159,299,924,946]" gridcol="0" gridrow="4" pageId="4" pageNumber="141">EL</th>
<td id="5E015DB34A05006C09DBFC61FDCAFC6D" box="[480,582,924,946]" gridcol="1" gridrow="4" pageId="4" pageNumber="141">0.06</td>
<td id="5E015DB34A05006C0B19FC61FCFDFC6D" box="[802,881,924,946]" gridcol="2" gridrow="4" pageId="4" pageNumber="141">0.10</td>
<td id="5E015DB34A05006C0C58FC61FB45FC6D" box="[1123,1225,924,946]" gridcol="3" gridrow="4" pageId="4" pageNumber="141">0.08–0.10</td>
</tr>
<tr id="1DD034CF4A05006C08A4FC38FB45FC04" box="[159,1225,965,987]" gridrow="5" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FC38FEA7FC04" box="[159,299,965,987]" gridcol="0" gridrow="5" pageId="4" pageNumber="141">SL</th>
<td id="5E015DB34A05006C09DBFC38FDCAFC04" box="[480,582,965,987]" gridcol="1" gridrow="5" pageId="4" pageNumber="141">0.30–0.36</td>
<td id="5E015DB34A05006C0B19FC38FCFDFC04" box="[802,881,965,987]" gridcol="2" gridrow="5" pageId="4" pageNumber="141">0.32</td>
<td id="5E015DB34A05006C0C58FC38FB45FC04" box="[1123,1225,965,987]" gridcol="3" gridrow="5" pageId="4" pageNumber="141">0.32–0.33</td>
</tr>
<tr id="1DD034CF4A05006C08A4FC13FB45FBDB" box="[159,1225,1006,1028]" gridrow="6" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FC13FEA7FBDB" box="[159,299,1006,1028]" gridcol="0" gridrow="6" pageId="4" pageNumber="141">PW</th>
<td id="5E015DB34A05006C09DBFC13FDCAFBDB" box="[480,582,1006,1028]" gridcol="1" gridrow="6" pageId="4" pageNumber="141">0.38–0.40</td>
<td id="5E015DB34A05006C0B19FC13FCFDFBDB" box="[802,881,1006,1028]" gridcol="2" gridrow="6" pageId="4" pageNumber="141">0.37</td>
<td id="5E015DB34A05006C0C58FC13FB45FBDB" box="[1123,1225,1006,1028]" gridcol="3" gridrow="6" pageId="4" pageNumber="141">0.37–0.39</td>
</tr>
<tr id="1DD034CF4A05006C08A4FBE5FB45FBF1" box="[159,1225,1048,1070]" gridrow="7" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FBE5FEA7FBF1" box="[159,299,1048,1070]" gridcol="0" gridrow="7" pageId="4" pageNumber="141">WL</th>
<td id="5E015DB34A05006C09DBFBE5FDCAFBF1" box="[480,582,1048,1070]" gridcol="1" gridrow="7" pageId="4" pageNumber="141">0.70–0.72</td>
<td id="5E015DB34A05006C0B19FBE5FCFDFBF1" box="[802,881,1048,1070]" gridcol="2" gridrow="7" pageId="4" pageNumber="141">0.70</td>
<td id="5E015DB34A05006C0C58FBE5FB45FBF1" box="[1123,1225,1048,1070]" gridcol="3" gridrow="7" pageId="4" pageNumber="141">0.67–0.76</td>
</tr>
<tr id="1DD034CF4A05006C08A4FBBCFB45FB88" box="[159,1225,1089,1111]" gridrow="8" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FBBCFEA7FB88" box="[159,299,1089,1111]" gridcol="0" gridrow="8" pageId="4" pageNumber="141">PH</th>
<td id="5E015DB34A05006C09DBFBBCFDCAFB88" box="[480,582,1089,1111]" gridcol="1" gridrow="8" pageId="4" pageNumber="141">0.18</td>
<td id="5E015DB34A05006C0B19FBBCFCFDFB88" box="[802,881,1089,1111]" gridcol="2" gridrow="8" pageId="4" pageNumber="141">0.17</td>
<td id="5E015DB34A05006C0C58FBBCFB45FB88" box="[1123,1225,1089,1111]" gridcol="3" gridrow="8" pageId="4" pageNumber="141">0.18–0.29</td>
</tr>
<tr id="1DD034CF4A05006C08A4FB97FB45FB5F" box="[159,1225,1130,1152]" gridrow="9" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FB97FEA7FB5F" box="[159,299,1130,1152]" gridcol="0" gridrow="9" pageId="4" pageNumber="141">PL</th>
<td id="5E015DB34A05006C09DBFB97FDCAFB5F" box="[480,582,1130,1152]" gridcol="1" gridrow="9" pageId="4" pageNumber="141">0.37</td>
<td id="5E015DB34A05006C0B19FB97FCFDFB5F" box="[802,881,1130,1152]" gridcol="2" gridrow="9" pageId="4" pageNumber="141">0.35</td>
<td id="5E015DB34A05006C0C58FB97FB45FB5F" box="[1123,1225,1130,1152]" gridcol="3" gridrow="9" pageId="4" pageNumber="141">0.33–0.39</td>
</tr>
<tr id="1DD034CF4A05006C08A4FB69FB45FB75" box="[159,1225,1172,1194]" gridrow="10" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FB69FEA7FB75" box="[159,299,1172,1194]" gridcol="0" gridrow="10" pageId="4" pageNumber="141">DPW</th>
<td id="5E015DB34A05006C09DBFB69FDCAFB75" box="[480,582,1172,1194]" gridcol="1" gridrow="10" pageId="4" pageNumber="141">N/A</td>
<td id="5E015DB34A05006C0B19FB69FCFDFB75" box="[802,881,1172,1194]" gridcol="2" gridrow="10" pageId="4" pageNumber="141">0.19</td>
<td id="5E015DB34A05006C0C58FB69FB45FB75" box="[1123,1225,1172,1194]" gridcol="3" gridrow="10" pageId="4" pageNumber="141">0.18–0.20</td>
</tr>
<tr id="1DD034CF4A05006C08A4FB40FB45FB0C" box="[159,1225,1213,1235]" gridrow="11" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FB40FB45FB0C" box="[159,1225,1213,1235]" colspan="4" colspanRight="3" gridcol="0" gridrow="11" pageId="4" pageNumber="141">Indices</th>
</tr>
<tr id="1DD034CF4A05006C08A4FB1BFB45FB23" box="[159,1225,1254,1276]" gridrow="12" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FB1BFEA7FB23" box="[159,299,1254,1276]" gridcol="0" gridrow="12" pageId="4" pageNumber="141">CI</th>
<td id="5E015DB34A05006C09DBFB1BFDCAFB23" box="[480,582,1254,1276]" gridcol="1" gridrow="12" pageId="4" pageNumber="141">0.88–0.90</td>
<td id="5E015DB34A05006C0B19FB1BFCFDFB23" box="[802,881,1254,1276]" gridcol="2" gridrow="12" pageId="4" pageNumber="141">0.82</td>
<td id="5E015DB34A05006C0C58FB1BFB45FB23" box="[1123,1225,1254,1276]" gridcol="3" gridrow="12" pageId="4" pageNumber="141">0.79–0.90</td>
</tr>
<tr id="1DD034CF4A05006C08A4FAEDFB45FAF9" box="[159,1225,1296,1318]" gridrow="13" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FAEDFEA7FAF9" box="[159,299,1296,1318]" gridcol="0" gridrow="13" pageId="4" pageNumber="141">MI</th>
<td id="5E015DB34A05006C09DBFAEDFDCAFAF9" box="[480,582,1296,1318]" gridcol="1" gridrow="13" pageId="4" pageNumber="141">0.19–0.22</td>
<td id="5E015DB34A05006C0B19FAEDFCFDFAF9" box="[802,881,1296,1318]" gridcol="2" gridrow="13" pageId="4" pageNumber="141">0.21</td>
<td id="5E015DB34A05006C0C58FAEDFB45FAF9" box="[1123,1225,1296,1318]" gridcol="3" gridrow="13" pageId="4" pageNumber="141">0.20–0.33</td>
</tr>
<tr id="1DD034CF4A05006C08A4FAC4FB45FA90" box="[159,1225,1337,1359]" gridrow="14" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FAC4FEA7FA90" box="[159,299,1337,1359]" gridcol="0" gridrow="14" pageId="4" pageNumber="141">OI</th>
<td id="5E015DB34A05006C09DBFAC4FDCAFA90" box="[480,582,1337,1359]" gridcol="1" gridrow="14" pageId="4" pageNumber="141">N/A</td>
<td id="5E015DB34A05006C0B19FAC4FCFDFA90" box="[802,881,1337,1359]" gridcol="2" gridrow="14" pageId="4" pageNumber="141">0.18</td>
<td id="5E015DB34A05006C0C58FAC4FB45FA90" box="[1123,1225,1337,1359]" gridcol="3" gridrow="14" pageId="4" pageNumber="141">0.14–0.19</td>
</tr>
<tr id="1DD034CF4A05006C08A4FA9FFB45FAA7" box="[159,1225,1378,1400]" gridrow="15" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FA9FFEA7FAA7" box="[159,299,1378,1400]" gridcol="0" gridrow="15" pageId="4" pageNumber="141">SI</th>
<td id="5E015DB34A05006C09DBFA9FFDCAFAA7" box="[480,582,1378,1400]" gridcol="1" gridrow="15" pageId="4" pageNumber="141">0.55–0.60</td>
<td id="5E015DB34A05006C0B19FA9FFCFDFAA7" box="[802,881,1378,1400]" gridcol="2" gridrow="15" pageId="4" pageNumber="141">0.58</td>
<td id="5E015DB34A05006C0C58FA9FFB45FAA7" box="[1123,1225,1378,1400]" gridcol="3" gridrow="15" pageId="4" pageNumber="141">0.57–0.65</td>
</tr>
<tr id="1DD034CF4A05006C08A4FA71FB45FA7D" box="[159,1225,1420,1442]" gridrow="16" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FA71FEA7FA7D" box="[159,299,1420,1442]" gridcol="0" gridrow="16" pageId="4" pageNumber="141">LPI</th>
<td id="5E015DB34A05006C09DBFA71FDCAFA7D" box="[480,582,1420,1442]" gridcol="1" gridrow="16" pageId="4" pageNumber="141">0.49</td>
<td id="5E015DB34A05006C0B19FA71FCFDFA7D" box="[802,881,1420,1442]" gridcol="2" gridrow="16" pageId="4" pageNumber="141">0.49</td>
<td id="5E015DB34A05006C0C58FA71FB45FA7D" box="[1123,1225,1420,1442]" gridcol="3" gridrow="16" pageId="4" pageNumber="141">0.53–0.78</td>
</tr>
<tr id="1DD034CF4A05006C08A4FA48FB45FA14" box="[159,1225,1461,1483]" gridrow="17" pageId="4" pageNumber="141">
<th id="5E015DB34A05006C08A4FA48FEA7FA14" box="[159,299,1461,1483]" gridcol="0" gridrow="17" pageId="4" pageNumber="141">DPI</th>
<td id="5E015DB34A05006C09DBFA48FDCAFA14" box="[480,582,1461,1483]" gridcol="1" gridrow="17" pageId="4" pageNumber="141">N/A</td>
<td id="5E015DB34A05006C0B19FA48FCFDFA14" box="[802,881,1461,1483]" gridcol="2" gridrow="17" pageId="4" pageNumber="141">0.54</td>
<td id="5E015DB34A05006C0C58FA48FB45FA14" box="[1123,1225,1461,1483]" gridcol="3" gridrow="17" pageId="4" pageNumber="141">0.47–0.63</td>
</tr>
</table>
</paragraph>
<paragraph id="A35F368D4A05FF9608FCF9F0FD24FCE7" blockId="4.[151,1437,1548,2005]" lastBlockId="5.[151,1437,151,2009]" lastPageId="5" lastPageNumber="142" pageId="4" pageNumber="141">
<bibRefCitation id="C7714B7C4A05FF9708FCF9F0FE03F9FB" box="[199,399,1548,1573]" pageId="4" pageNumber="141" refId="ref7813" refString="Brown, W. L. Jr. (1953) Revisionary studies in the ant tribe Dacetini. American Midland Naturalist, 50, 1 - 137. https: // doi. org / 10.2307 / 2422158" type="journal article">Brown (1953: 21)</bibRefCitation>
studied the
<typeStatus id="7C5B882F4A05FF970A2EF9F0FDC9F9FA" box="[533,581,1549,1573]" pageId="4" pageNumber="141">type</typeStatus>
series and generally agreed with Wheeler’s description except for the higher values he obtained for TL, values corroborated by
<bibRefCitation id="C7714B7C4A05FF970AF6F9D2FC2BF997" box="[717,935,1583,1608]" pageId="4" pageNumber="141" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton (2000: 243)</bibRefCitation>
. Wheeler described the eyes as not visible in a cephalic dorsal view but the eyes are partially visible not only in the Ecuadorian series but also in the
<typeStatus id="7C5B882F4A05FF970D7EF9A8FA10F9B2" box="[1349,1436,1621,1645]" pageId="4" pageNumber="141" type="syntype">syntype</typeStatus>
image and
<bibRefCitation id="C7714B7C4A05FF97092CF98AFE34F94F" box="[279,440,1655,1680]" pageId="4" pageNumber="141" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton (2000)</bibRefCitation>
considered the eye as prominent and bulging outwards. The clypeus was described as long as broad by Wheeler but calculating a clypeal index (clypeal width / clypeal length x 100) from the images and specimens reveals a continuity of values from 71 (
<typeStatus id="7C5B882F4A05FF970B20F93DFCF6F907" box="[795,890,1728,1752]" pageId="4" pageNumber="141" type="syntype">Syntype</typeStatus>
) to
<quantity id="64189B684A05FF970B97F93DFC65F907" box="[940,1001,1727,1752]" metricMagnitude="0" metricUnit="m" metricValue="2.3622" pageId="4" pageNumber="141" unit="in" value="93.0">93 in</quantity>
an Ecuadorian worker. The posterior cephalic margin ranges from concave in the Guyanese specimen to slightly convex or straight in the other specimens. The mesosoma in the
<typeStatus id="7C5B882F4A05FF970A2BF8F5FDCCF8FF" box="[528,576,1800,1824]" pageId="4" pageNumber="141">type</typeStatus>
series was described as mostly smooth and shining by Wheeler and study of the
<typeStatus id="7C5B882F4A05FF9708FBF8D0FE9BF89A" box="[192,279,1837,1861]" pageId="4" pageNumber="141" type="syntype">syntype</typeStatus>
image as well as the image of the worker from
<collectingCountry id="DBF7761D4A05FF970B15F8D1FCF3F89A" box="[814,895,1836,1861]" name="Guyana" pageId="4" pageNumber="141">Guiana</collectingCountry>
corroborate this. The Ecuadorian specimens are more sculptured: the anepisternum bears small irregular undulations vs. the smooth to broad undulations of the other specimens; the dorsal mesosomal surface is similar to the other ants in patterns of sculpture but these are more developed and deeper in the Ecuadorian ants; the lateral propodeal face is mostly smooth to broadly undulated in the
<collectingCountry id="DBF7761D4A05FF970960F841FE20F80A" box="[347,428,1980,2005]" name="Guyana" pageId="4" pageNumber="141">Guiana</collectingCountry>
and
<collectingCountry id="DBF7761D4A05FF9709DCF841FDCAF80A" box="[487,582,1980,2005]" name="Trinidad and Tobago" pageId="4" pageNumber="141">Trinidad</collectingCountry>
ants but rugulose in the Ecuadorian samples. The
<collectingCountry id="DBF7761D4A05FF970CAFF841FB7DF80A" box="[1172,1265,1980,2005]" name="Ecuador" pageId="4" pageNumber="141">Ecuador</collectingCountry>
specimens are darker-colored than the other ants, with the
<typeStatus id="7C5B882F4A04FF960A46FF65FD58FF6F" box="[637,724,152,176]" pageId="5" pageNumber="142" type="syntype">syntype</typeStatus>
showing the lightest shade, a brown color. Color also exhibits a continuum of shades: the
<typeStatus id="7C5B882F4A04FF960986FF40FD98FF0A" box="[445,532,189,213]" pageId="5" pageNumber="142" type="syntype">syntype</typeStatus>
is predominantly light brown; the Guyanese ant has a very dark, almost black, head with the rest of the body dark-brown; the Andean material is nearly black. It is possible that the
<typeStatus id="7C5B882F4A04FF960D23FF1DFAE3FF27" box="[1304,1391,224,248]" pageId="5" pageNumber="142" type="syntype">syntype</typeStatus>
has experienced some loss of color since it was examined by Wheeler; he described the head as black and the body as castaneous brown. The
<typeStatus id="7C5B882F4A04FF96099FFED5FE77FE9F" box="[420,507,296,320]" pageId="5" pageNumber="142" type="syntype">syntype</typeStatus>
head is definitely not black. The definition of &quot;castaneous brown&quot; is problematic given the abundance of fanciful names given to colors and an individual's perception of color but an internet search for &quot;castaneous brown&quot; seems to side with a darker shade of brown, at least for human hair color.
<bibRefCitation id="C7714B7C4A04FF960CEEFE8DFA10FE57" box="[1237,1436,367,392]" pageId="5" pageNumber="142" refId="ref7813" refString="Brown, W. L. Jr. (1953) Revisionary studies in the ant tribe Dacetini. American Midland Naturalist, 50, 1 - 137. https: // doi. org / 10.2307 / 2422158" type="journal article">Brown (1953: 21)</bibRefCitation>
examined the
<typeStatus id="7C5B882F4A04FF960903FE68FE16FE72" box="[312,410,405,429]" pageId="5" pageNumber="142" type="syntype">syntypes</typeStatus>
and judged the dominant body color as deep ferruginous with a mahogany brown gaster. The density and length of the hairs also seem not to differ markedly amongst the samples. The
<typeStatus id="7C5B882F4A04FF960CFEFE45FA90FE0F" box="[1221,1308,440,464]" pageId="5" pageNumber="142" type="syntype">syntype</typeStatus>
images are difficult to interpret as the specimen has evidently been subject to considerable wear, consisting of a disarticulated head and mesosoma, with the hairs apparently partially abraded and mostly in disarray. In general the pilosity is dense. The mesosomal dorsal hairs are densest on the promesonotum in all material, thinning out towards the propodeum. The hairs on the gastral tergum are of relatively uniform length, shorter than some of the hairs on the leg. We cannot totally discount the possibility the Ecuadorian series are not
<taxonomicName id="64E04D0E4A04FF960BC8FD91FBEAFD5B" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1011,1126,620,644]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A04FF960BC8FD91FBEAFD5B" box="[1011,1126,620,644]" italics="true" pageId="5" pageNumber="142">S. thaxteri</emphasis>
</taxonomicName>
, but a different, albeit very closely related species, using morphology as a guide. Even though this new material represents a great improvement towards a better understanding of what is
<taxonomicName id="64E04D0E4A04FF960B3EFD49FCFBFD13" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[773,887,692,716]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A04FF960B3EFD49FCFBFD13" box="[773,887,692,716]" italics="true" pageId="5" pageNumber="142">S. thaxteri</emphasis>
</taxonomicName>
, it still is a very limited selection considering the considerable distance separating the Ecuadorian ants from the Trinidad—Guyanese ants. Since the characters that seem typical for the Ecuadorian samples are not starkly different from the other ants, we have chosen to consider this new material as a population of
<emphasis id="9194EA9F4A04FF960A16FCDDFD24FCE7" box="[557,680,800,824]" italics="true" pageId="5" pageNumber="142">
<taxonomicName id="64E04D0E4A04FF960A16FCDDFD29FCE7" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[557,677,800,824]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="thaxteri">S. thaxteri</taxonomicName>
.
</emphasis>
</paragraph>
<paragraph id="A35F368D4A04FF9608FCFCBEFDDBFB87" blockId="5.[151,1437,151,2009]" pageId="5" pageNumber="142">
<emphasis id="9194EA9F4A04FF9608FCFCBEFE60FC84" bold="true" box="[199,492,835,860]" italics="true" pageId="5" pageNumber="142">Observed natural history.</emphasis>
Here we narrate some predatory behavior as seen in the field. Our first observation was made on the afternoon of
<date id="D75E104D4A04FF9609C5FC95FD23FC5F" box="[510,687,871,896]" pageId="5" pageNumber="142" value="2009-03-19">
19 March
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</date>
in an evergreen premontane rainforest at
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. The ants were observed on a single poorly-branched unidentified dicot about
<quantity id="64189B684A04FF960B55FC71FC2BFC7B" box="[878,935,908,932]" metricMagnitude="0" metricUnit="m" metricValue="1.4" pageId="5" pageNumber="142" unit="m" value="1.4">1.4m</quantity>
high. Most ants were observed alone or in small groups (2–4 individuals) at the apex of almost every branch or exterior leaf, from the base to the top of the plant. Ants were motionless and remained impressively immobile when touched with forceps. No panic behavior was observed during the hand-collecting, even among ants closely located to a captured specimen. As a result,
<specimenCount id="B5E6FD044A04FF960DBBFC0AFE80FBEA" pageId="5" pageNumber="142" type="generic">52 specimens</specimenCount>
were easily collected (a few more specimens were present). Careful search did not reveal any other ants of this species on the vegetation nearby.
</paragraph>
<paragraph id="A35F368D4A04FF9608FCFB99FAE8FA3A" blockId="5.[151,1437,151,2009]" pageId="5" pageNumber="142">
The next observation was made on the afternoon of
<date id="D75E104D4A04FF960B15FB99FC7EFBA3" box="[814,1010,1124,1149]" pageId="5" pageNumber="142" value="2014-10-26">26 October 2014</date>
and another the late morning of the following day. The ants were observed in small groups on the apex or close to the apex of a single shrub in secondary closed canopy forest, in a ravine with elevated humidity. The plant used by the ants was a single stem, understory, unidentified dicot about
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high. Images taken in the field will be posted on www.antwiki.org. The ants were observed hunting on this plant only and a careful search of neighboring vegetation during each of the two field sessions failed to detect any specimens foraging elsewhere. A bromeliad on a neighboring tree had leaves crossing through the shrub, contacting its stem and leaves but no ants were found on it. Most ants were observed in the following stance: immobile, the body forming an angle with the substrate, lowest posteriorly with the head highest, pointing anterodorsally with the mandibles wide open (approximately 90°) and antennae fully extended. A few were observed walking slowly on the plant surface. Most of the immobile ants were in loose groups, some separated by more than a body length while others were distanced from each other by less than a body length.
</paragraph>
<paragraph id="A35F368D4A04FF9508FCFA0DFD8EFF27" blockId="5.[151,1437,151,2009]" lastBlockId="6.[151,1437,151,2035]" lastPageId="6" lastPageNumber="143" pageId="5" pageNumber="142">
One group of about 20 ants was observed along the apex of the apical leaf, another group of about 12 ants was observed on the dorsal surface of a leaf 2 levels down from the apex. This latter group was concentrated on or around the dead and moldy remains of a heteropteran. A few other ants were loosely congregated at the base of another leaf, close to the apex, either in the midst of or next to a group of scale insects. Initial efforts at collecting specimens using a pooter failed as the ants could not be sucked into the apparatus despite forceful efforts. They were then individually plucked from the plant surface using fine-tipped forceps. The effort required to separate each ant from the substrate was unexpectedly great, causing the apical leaves of the shrub to shake with each plucking, without, however, causing any panic behavior among the ants. On the second day of observation (
<date id="D75E104D4A04FF9608A4F8F3FE94F8F9" box="[159,280,1806,1830]" pageId="5" pageNumber="142" value="2014-10-27">27.X.2014</date>
) 10 ants were observed on the apex and 8 on a dead leaf that had fallen and lodged itself between the leaves of the plant (not there the previous day). After some time an apparent drosophilid fly approached the plant to land and it was seized by the ant on its head close to the rostrum and stung in the ventral thorax. The initial approach of the fly and reaction of the ant was not observed (the cost of a 2 second distraction). The ant lifted the fly and stayed mostly still, except for forward thrusts of its abdomen to sting the fly, until the dipteran ceased to move, whereupon it carried the fly down the stem of the plant into the leaf litter. The fly was about 25% larger than the ant. No other ants were observed intervening during this episode. Interestingly, one specimen was collected in the same locality by vegetation beating and another one was found in a Winkler sample by our colleague Justine Jacquemin, both in
<date id="D75E104D4A07FF950949FF22FE72FF27" box="[370,510,223,248]" pageId="6" pageNumber="143" value="2010-03">March 2010</date>
.
</paragraph>
<paragraph id="A35F368D4A07FF9508FCFEFEFBACFB46" blockId="6.[151,1437,151,2035]" pageId="6" pageNumber="143">
<emphasis id="9194EA9F4A07FF9508FCFEFEFDB8FEC4" box="[199,564,259,283]" italics="true" pageId="6" pageNumber="143">Natural history and morphology</emphasis>
. The morphological analysis and scant field observations suggest
<taxonomicName id="64E04D0E4A07FF950D1CFEFEFA10FEC4" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1319,1436,259,283]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF950D1CFEFEFA10FEC4" box="[1319,1436,259,283]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
preys upon flying insects that alight on the surface of the shrub it is positioned upon. The immobile stance practiced by these ants on exposed leaf surfaces is interpreted as ambush behavior. The presence of sensory hairs that detect air currents has been studied for several insects other than ants (
<bibRefCitation id="C7714B7C4A07FF950BDBFE93FB20FE58" box="[992,1196,366,391]" pageId="6" pageNumber="143" refId="ref8942" refString="Taylor, G. K. &amp; Krapp, H. G. (2007) Sensory systems and flight stability: what do insects measure and why? Advances in Insect Physiology, 34, 231 - 316. https: // doi. org / 10.1016 / S 0065 - 2806 (07) 34005 - 8" type="journal article">
Taylor
<emphasis id="9194EA9F4A07FF950C09FE92FBE7FE59" box="[1074,1131,366,390]" italics="true" pageId="6" pageNumber="143">et al.</emphasis>
2007
</bibRefCitation>
) and filiform hairs in particular are regarded as being quite sensitive to air currents (
<bibRefCitation id="C7714B7C4A07FF950B4AFE6FFBE2FE75" box="[881,1134,402,427]" pageId="6" pageNumber="143" refId="ref8609" refString="Pfluger, H. - J. &amp; Wolf, H. (2013) Developmental and activity-dependent plasticity of filiform hair receptors in the locust. Frontiers in Physiology, 4, 70. https: // doi. org / 10.3389 / fphys. 2013.00070" type="journal article">Pflüger &amp; Wolf 2013</bibRefCitation>
). The extraordinarily long filiform body hairs of these ants would constitute ideal detectors of air currents and could enable the ant to detect the approach of flying insects. The meso- and metatarsal claws of the species (
<figureCitation id="3BDB2A084A07FF950C1FFE24FBF1FE2D" box="[1060,1149,473,498]" captionStart="FIGURE 1" captionStartId="3.[151,250,1608,1630]" captionTargetBox="[206,1380,628,1584]" captionTargetId="figure@3.[206,1380,628,1584]" captionTargetPageId="3" captionText="FIGURE 1. Strumigenys thaxteri, worker. Figs. (A–C) Specimen RBINS 3871503. (A) Dorsal view of head. (B) Lateral view of body. (C) Dorsal view of body. Fig (D) Specimen deposited in DZUP, SEM image of tarsal claw." httpUri="https://zenodo.org/record/1294207/files/figure.png" pageId="6" pageNumber="143">Fig. 1D</figureCitation>
) have a relatively robust appearance that would conceivably be of great utility preventing the ant being dislodged from its perch by flying prey before it has been immobilized. The effort needed to manually collect specimens attests to the effectiveness of its grip. We speculate that a
<taxonomicName id="64E04D0E4A07FF9509C9FDB8FDF0FD83" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[498,636,581,604]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF9509C9FDB8FDF0FD83" box="[498,636,581,604]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
on the ground that has just latched onto a large Springtail not yet paralyzed by the ant's sting may have to ride out one or two thumps of the furcula, but it will probably not be cast so far from its hunting route as to lose its way back to the nest. The situation is different for a
<taxonomicName id="64E04D0E4A07FF950C94FD70FAAEFD7B" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1199,1314,652,676]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF950C94FD70FAAEFD7B" box="[1199,1314,652,676]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
worker, as large flying prey could carry it a distance far beyond the possibilities of returning to its nest. A brief qualitative survey of relative claw size in about 22 assorted species of long- and short-mandibulate
<taxonomicName id="64E04D0E4A07FF950C90FD29FAB9FD34" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[1195,1333,724,747]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950C90FD29FAB9FD34" box="[1195,1333,724,747]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
from 11 different species groups, as defined by
<bibRefCitation id="C7714B7C4A07FF950A6CFD0AFD76FCCF" box="[599,762,759,784]" pageId="6" pageNumber="143" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton (2000)</bibRefCitation>
, gives us the impression that
<taxonomicName id="64E04D0E4A07FF950C74FD05FB48FCD0" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1103,1220,759,783]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF950C74FD05FB48FCD0" box="[1103,1220,759,783]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
has a greater claw width / claw length ratio than the others. Only in
<taxonomicName id="64E04D0E4A07FF950A81FCE6FC1AFCEB" authority="(Wheeler)" authorityName="Wheeler" baseAuthorityName="Wheeler" baseAuthorityYear="1915" box="[698,918,795,820]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="beebei">
<emphasis id="9194EA9F4A07FF950A81FCE6FC92FCEC" box="[698,798,795,819]" italics="true" pageId="6" pageNumber="143">S. beebei</emphasis>
(Wheeler)
</taxonomicName>
did the claws seem to appear similarly robust. The minute size of their claws made it quite difficult to measure them with the optics at hand but it was possible to discern they were relatively more elongate than in
<taxonomicName id="64E04D0E4A07FF950AE7FC9EFCDDFCA4" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[732,849,867,891]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF950AE7FC9EFCDDFCA4" box="[732,849,867,891]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
.
<taxonomicName id="64E04D0E4A07FF950B5AFC9EFB4CFCA4" authority="(Latreille)" authorityName="Latreille" baseAuthorityName="Latreille" baseAuthorityYear="1802" box="[865,1216,866,891]" class="Insecta" family="Formicidae" genus="Daceton" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="armigerum">
<emphasis id="9194EA9F4A07FF950B5AFC9EFBCAFCA5" box="[865,1094,867,890]" italics="true" pageId="6" pageNumber="143">Daceton armigerum</emphasis>
(Latreille)
</taxonomicName>
is another arboreal ambushing ant that will take prey much larger than its size and it bears very robust claws that contribute to the ant’s stability when struggling with prey, and ultimately preventing prey loss (
<bibRefCitation id="C7714B7C4A07FF950BE0FC57FB38FC1D" box="[987,1204,938,963]" pageId="6" pageNumber="143" refId="ref8047" refString="Dejean, A., Delabie, J. H. C., Corbara, B., Azemar, F., Groc, S. &amp; Orivel, J. (2012) The Ecology and Feeding Habits of the Arboreal Trap-Jawed Ant Daceton armigerum. PLoS ONE, 7 (5), e 37683. https: // doi. org / 10.1371 / journal. pone. 0037683" type="journal article">
Dejean
<emphasis id="9194EA9F4A07FF950C0DFC56FBE5FC1D" box="[1078,1129,938,962]" italics="true" pageId="6" pageNumber="143">et al</emphasis>
. 2012
</bibRefCitation>
;
<bibRefCitation id="C7714B7C4A07FF950CF9FC57FA1DFC1D" box="[1218,1425,938,963]" pageId="6" pageNumber="143" refId="ref7623" refString="Billen, J., Al-Khalifa, M. S. &amp; Silva, R. R. (2017) Pretarsus structure in relation to climbing ability in the ants Brachyponera sennaarensis and Daceton armigerum. Saudi Journal of Biological Sciences, 24, 830 - 836. https: // doi. org / 10.1016 / j. sjbs. 2016.06.007" type="journal article">
Billen
<emphasis id="9194EA9F4A07FF950D2BFC56FACFFC1D" box="[1296,1347,938,962]" italics="true" pageId="6" pageNumber="143">et al</emphasis>
. 2017
</bibRefCitation>
).
<bibRefCitation id="C7714B7C4A07FF9508ACFC30FEF4FC39" box="[151,376,973,998]" pageId="6" pageNumber="143" refId="ref7972" refString="Dejean, A., Leroy, C., Corbara, B., Roux, O., Cereghino, R., Orivel, J. &amp; Boulay, R. (2010) Arboreal ants use the ' Velcro Principle' to capture very large prey. PLoS ONE, 5 (6), e 11331. https: // doi. org / 10.1371 / journal. pone. 0011331" type="journal article">
Dejean
<emphasis id="9194EA9F4A07FF9508D6FC32FEA9FC39" box="[237,293,974,998]" italics="true" pageId="6" pageNumber="143">et al.</emphasis>
(2010)
</bibRefCitation>
report on enlarged claws and other morphological modifications such as specialized arolia are known in other arboreal ambushing ants such as
<taxonomicName id="64E04D0E4A07FF950A8EFC0FFCEEFBD6" authorityName="Guerreo, Delabie &amp; Dejean" authorityYear="2010" box="[693,866,1009,1033]" class="Insecta" family="Formicidae" genus="Azteca" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="andreae">
<emphasis id="9194EA9F4A07FF950A8EFC0FFCEEFBD6" box="[693,866,1009,1033]" italics="true" pageId="6" pageNumber="143">Azteca andreae</emphasis>
</taxonomicName>
<collectingRegion id="6124F86F4A07FF950B53FC0FFC5CFBD5" box="[872,976,1010,1034]" country="Mexico" name="Guerrero" pageId="6" pageNumber="143">Guerrero</collectingRegion>
, Delabie &amp; Dejean. Ideally a comparison of claw morphology and its relation with function should be performed by measuring the claws, their curvature, modeling force vectors, behavior, and controlling for phylogeny. Additionally, claw size is not necessarily equal in the same individual as the foretarsal claws may be quite reduced compared with the metatarsal claws, such as in
<taxonomicName id="64E04D0E4A07FF950DBCFBA0FE30FB46" authority="Bolton. Such" authorityName="Bolton. Such" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="xenochelyna">
<emphasis id="9194EA9F4A07FF950DBCFBA0FEAFFB47" italics="true" pageId="6" pageNumber="143">S. xenochelyna</emphasis>
Bolton. Such
</taxonomicName>
a study goes beyond the intentions of this publication.
</paragraph>
<paragraph id="A35F368D4A07FF9508FCFB59FAAFF82D" blockId="6.[151,1437,151,2035]" pageId="6" pageNumber="143">
The mandibles of
<taxonomicName id="64E04D0E4A07FF95099BFB58FD94FB63" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[416,536,1188,1212]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF95099BFB58FD94FB63" box="[416,536,1188,1212]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
are quite massive if compared with other short-mandibulate
<taxonomicName id="64E04D0E4A07FF950CD6FB58FAF9FB63" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[1261,1397,1189,1212]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950CD6FB58FAF9FB63" box="[1261,1397,1189,1212]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
. If measured in lateral view and in the same plane, the maximum mandibular width divided by the mandible's length from base to apex should give a qualitative index of how massive the jaw is, with values close to 1.0 characterizing a massive, block-like jaw. In
<taxonomicName id="64E04D0E4A07FF9509DBFAEDFDDEFAF8" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[480,594,1295,1319]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF9509DBFAEDFDDEFAF8" box="[480,594,1295,1319]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
this value is about 0.88–0.92 (n=4) and in
<taxonomicName id="64E04D0E4A07FF950C01FAEDFB21FAF8" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[1082,1197,1296,1319]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A07FF950C01FAEDFB21FAF8" box="[1082,1197,1296,1319]" italics="true" pageId="6" pageNumber="143">S. reticeps</emphasis>
</taxonomicName>
it is about 0.64–0.70 (n=4). The mandible in
<taxonomicName id="64E04D0E4A07FF95099AFACEFD9FFA94" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[417,531,1331,1355]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF95099AFACEFD9FFA94" box="[417,531,1331,1355]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
, when seen laterally, is triangular with a broad and wide base, gradually tapering to the apex with its dorsal margin forming a broad convexity and its ventral margin is almost straight. Massive mandibles with a broad dorsal area or masticatory margin would conceivably help this ant secure a firm grip on prey approaching it from above. Other short-mandibulate species may have very robust mandibles as indicated by the aforementioned index, but their shape will be quite different, complicating comparisons.
<taxonomicName id="64E04D0E4A07FF950CFEFA3FFAC2FA06" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[1221,1358,1474,1497]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950CFEFA3FFAC2FA06" box="[1221,1358,1474,1497]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
of the
<emphasis id="9194EA9F4A07FF9508ACFA1AFF51FA21" box="[151,221,1511,1534]" italics="true" pageId="6" pageNumber="143">excisa</emphasis>
group (
<bibRefCitation id="C7714B7C4A07FF950900FA1BFD85FA20" box="[315,521,1510,1535]" pageId="6" pageNumber="143" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton 2000: 169</bibRefCitation>
) are similarly robust but the masticatory margin of their mandibles is not just dorsal but extends slightly ventrad (two examples:
<taxonomicName id="64E04D0E4A07FF950ADDF9F7FC13F9FD" authority="Bolton" authorityName="Bolton" box="[742,927,1545,1570]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="turpis">
<emphasis id="9194EA9F4A07FF950ADDF9F7FCC9F9FE" box="[742,837,1546,1569]" italics="true" pageId="6" pageNumber="143">S. turpis</emphasis>
Bolton
</taxonomicName>
, specimen CASENT0281950;
<taxonomicName id="64E04D0E4A07FF950D3AF9F7FF6AF999" authority="Bolton" authorityName="Bolton" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="dontopagis">
<emphasis id="9194EA9F4A07FF950D3AF9F7FA10F9FE" box="[1281,1436,1545,1569]" italics="true" pageId="6" pageNumber="143">S. dontopagis</emphasis>
Bolton
</taxonomicName>
, specimen CASENT0900212).
<taxonomicName id="64E04D0E4A07FF950A77F9D3FD58F99A" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[588,724,1582,1605]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950A77F9D3FD58F99A" box="[588,724,1582,1605]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
of the
<taxonomicName id="64E04D0E4A07FF950B13F9D0FC19F99A" box="[808,917,1581,1605]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="leptothrix">
<emphasis id="9194EA9F4A07FF950B13F9D0FC19F99A" box="[808,917,1581,1605]" italics="true" pageId="6" pageNumber="143">leptothrix</emphasis>
</taxonomicName>
group (
<bibRefCitation id="C7714B7C4A07FF950BD5F9D0FB34F999" box="[1006,1208,1581,1606]" pageId="6" pageNumber="143" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton 2000: 427</bibRefCitation>
) also bear powerful appearing mandibles with a similar shape to the mandibles of the
<emphasis id="9194EA9F4A07FF950B8BF9AFFC7AF9B6" box="[944,1014,1618,1641]" italics="true" pageId="6" pageNumber="143">excisa</emphasis>
group (two examples:
<taxonomicName id="64E04D0E4A07FF950D35F9ACFE80F952" authority="(Wheeler)" authorityName="Wheeler" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="leptothrix">
<emphasis id="9194EA9F4A07FF950D35F9ACFA10F9B6" box="[1294,1436,1617,1641]" italics="true" pageId="6" pageNumber="143">S. leptothrix</emphasis>
(Wheeler)
</taxonomicName>
, specimen CASENT0280704;
<taxonomicName id="64E04D0E4A07FF950A48F988FC20F952" authority="De Andrade" authorityName="De Andrade" box="[627,940,1652,1677]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="assamensis">
<emphasis id="9194EA9F4A07FF950A48F988FC9DF953" box="[627,785,1653,1676]" italics="true" pageId="6" pageNumber="143">S. assamensis</emphasis>
De Andrade
</taxonomicName>
, specimen CASENT0900133). A study of mandibular structure and function should take into account a variety of factors such as shape, size, mass, dentition, ant and prey behavior, to say the least. Ants that forage in open spaces tend to have relatively larger eyes than those that forage in the leaf litter or underground (
<bibRefCitation id="C7714B7C4A07FF950ABAF922FC02F927" box="[641,910,1759,1784]" pageId="6" pageNumber="143" refId="ref9001" refString="Weiser, N. &amp; Kaspari, M. (2006) Ecological morphospace of New World ants. Ecological Entomology, 31, 131 - 142. https: // doi. org / 10.1111 / j. 0307 - 6946.2006.00759. x" type="journal article">Weiser &amp; Kaspari 2006</bibRefCitation>
). Most
<taxonomicName id="64E04D0E4A07FF950BE4F91DFBE4F928" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[991,1128,1760,1783]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950BE4F91DFBE4F928" box="[991,1128,1760,1783]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
forage either in the litter or soil so a tendency towards smaller eyes would be expected for most. As a predator on foliage,
<taxonomicName id="64E04D0E4A07FF950C81F8F9FAA1F8C3" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1210,1325,1796,1820]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A07FF950C81F8F9FAA1F8C3" box="[1210,1325,1796,1820]" italics="true" pageId="6" pageNumber="143">S. thaxteri</emphasis>
</taxonomicName>
would be expected to have relatively larger eyes than usual and its eyes do project laterad, and are visible in a cephalic fullface view. The
<emphasis id="9194EA9F4A07FF95097EF8B1FE10F8BC" box="[325,412,1868,1891]" italics="true" pageId="6" pageNumber="143">tococae</emphasis>
species group of
<taxonomicName id="64E04D0E4A07FF950A5EF8B6FD63F8BD" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[613,751,1867,1890]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950A5EF8B6FD63F8BD" box="[613,751,1867,1890]" italics="true" pageId="6" pageNumber="143">Strumigenys</emphasis>
</taxonomicName>
includes several species associated with trees (
<bibRefCitation id="C7714B7C4A07FF950D3DF8B6FF4FF858" pageId="6" pageNumber="143" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton 2000: 563</bibRefCitation>
) and their relatively larger eyes are characteristic for the group. The two species of
<taxonomicName id="64E04D0E4A07FF950C41F88DFB55F858" authorityName="Perty" authorityYear="1833" box="[1146,1241,1904,1927]" class="Insecta" family="Formicidae" genus="Daceton" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="6" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A07FF950C41F88DFB55F858" box="[1146,1241,1904,1927]" italics="true" pageId="6" pageNumber="143">Daceton</emphasis>
</taxonomicName>
are also arboreal and have very prominent eyes dorsally positioned on the head (
<bibRefCitation id="C7714B7C4A07FF950B67F86EFB1BF874" box="[860,1175,1938,1963]" pageId="6" pageNumber="143" refId="ref7528" refString="Azorsa, F. &amp; Sosa-Calvo, J. (2008) Description of a remarkable new species of ant in the genus Daceton Perty (Formicidae: Dacetini) from South America. Zootaxa, 1749, 27 - 38." type="journal article">Azorsa &amp; Sosa-Calvo 2008</bibRefCitation>
). This condition can be explained by the fact that larger eyes provide higher sampling resolution (
<bibRefCitation id="C7714B7C4A07FF950BC2F84BFB7CF810" box="[1017,1264,1974,1999]" pageId="6" pageNumber="143" refId="ref8552" refString="Narendra, A., Ramirez-Esquivel, F. &amp; Ribi, W. A. (2016) Compound eye and ocellar structure for walking and flying modes of locomotion in the Australian ant, Camponotus consobrinus. Scientific reports, 6, 22331. https: // doi. org / 10.1038 / srep 22331" type="journal article">
Narendra
<emphasis id="9194EA9F4A07FF950C56F84AFB2DF811" box="[1133,1185,1974,1998]" italics="true" pageId="6" pageNumber="143">et al</emphasis>
. 2016
</bibRefCitation>
), meaning that individuals presenting this condition can optimize tracking for potential prey, or threats, in a wider area.
</paragraph>
<paragraph id="A35F368D4A06FF9408FCFF6AFCE5FE72" blockId="7.[151,1436,151,429]" pageId="7" pageNumber="144">
Ambush behavior is thus known for other arboreal foraging ants that nest in trees or shrubs (
<bibRefCitation id="C7714B7C4A06FF940CFCFF6AFA1BFF6F" box="[1223,1431,151,176]" pageId="7" pageNumber="144" refId="ref7918" refString="Dejean, A., Solano, P. J., Ayroles, J., Corbara, B. &amp; Orivel, J. (2009) Arboreal ants build traps to capture prey. Nature, 434, 973. https: // doi. org / 10.1038 / 434973 a" type="journal article">
Dejean
<emphasis id="9194EA9F4A06FF940D25FF64FADAFF6F" box="[1310,1366,152,176]" italics="true" pageId="7" pageNumber="144">et al.</emphasis>
2009
</bibRefCitation>
;
<bibRefCitation id="C7714B7C4A06FF9408ACFF41FEE5FF0B" box="[151,361,188,213]" pageId="7" pageNumber="144" refId="ref7972" refString="Dejean, A., Leroy, C., Corbara, B., Roux, O., Cereghino, R., Orivel, J. &amp; Boulay, R. (2010) Arboreal ants use the ' Velcro Principle' to capture very large prey. PLoS ONE, 5 (6), e 11331. https: // doi. org / 10.1371 / journal. pone. 0011331" type="journal article">
Dejean
<emphasis id="9194EA9F4A06FF9408D5FF40FEABFF0B" box="[238,295,188,212]" italics="true" pageId="7" pageNumber="144">et al.</emphasis>
2010
</bibRefCitation>
;
<bibRefCitation id="C7714B7C4A06FF94094EFF41FD5CFF0B" box="[373,720,188,213]" pageId="7" pageNumber="144" refId="ref8656" refString="Rodriguez-Girones, M. A., Gonzalvez, F. G., Llandres, A. L., Corlett, R. T. &amp; Santamaria, L. (2013) Possible role of weaver ants, Oecophylla smaragdina, in shaping plant - pollinator interactions in South-East Asia. Ecology, 101 (4), 1000 - 1006. https: // doi. org / 10.1111 / 1365 - 2745.12100" type="journal article">
Rodríguez-Gironés
<emphasis id="9194EA9F4A06FF940A6FFF40FD01FF0B" box="[596,653,188,212]" italics="true" pageId="7" pageNumber="144">et al.</emphasis>
2013
</bibRefCitation>
), but the present record is the first report of ambush hunting on shrubs for a ground nesting ant (A. Dejean, pers. comm.). The few observations narrated here open many more questions and make for a wonderful study of natural history. What is the relation between the ant nest and the “host” plant? Is it always a single plant? How is the plant chosen? How high do the ants forage into the understory? What is the breadth of prey diversity and size? Will more than one ant subdue the same prey item? What is the impact or relation of other ants foraging in the same plant? The apparent rarity of this species is undoubtedly the main obstacle towards garnering biological information about it.
</paragraph>
</subSubSection>
</treatment>
</document>

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<taxonomicName id="64E04D0E4A06FF9408ACFE02FDC7FDC5" authority="(Kempf, 1969)" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[151,587,511,538]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF9408ACFE02FDC7FDC5" bold="true" box="[151,587,511,538]" pageId="7" pageNumber="144">
<emphasis id="9194EA9F4A06FF9408ACFE02FE1DFDC6" bold="true" box="[151,401,511,537]" italics="true" pageId="7" pageNumber="144">Strumigenys reticeps</emphasis>
(
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)
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(
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)
</paragraph>
</subSubSection>
<subSubSection id="EBFA65064A06FF9408ACFD97FB2BFD03" pageId="7" pageNumber="144" type="reference_group">
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<taxonomicName id="64E04D0E4A06FF9408ACFD97FDB0FD5F" authority="Kempf, 1969: 286" authorityName="Kempf" authorityPageNumber="286" authorityYear="1969" box="[151,572,618,640]" class="Insecta" family="Formicidae" genus="Codiomyrmex" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF9408ACFD97FEF6FD5F" box="[151,378,618,640]" italics="true" pageId="7" pageNumber="144">Codiomyrmex reticeps</emphasis>
<treatmentCitation id="2241109C4A06FF9409BAFD97FDB0FD5F" author="" box="[385,572,618,640]" page="286" pageId="7" pageNumber="144">
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: 286
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, figs. 7–9 (w.)
<collectingCountry id="DBF7761D4A06FF940AE8FD97FC98FD5F" box="[723,788,618,640]" name="Brazil" pageId="7" pageNumber="144">Brazil</collectingCountry>
.
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<treatmentCitationGroup id="83F011A34A06FF9408ACFD74FB95FD40" box="[151,1049,649,671]" pageId="7" pageNumber="144">
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<emphasis id="9194EA9F4A06FF9408ACFD74FE19FD40" box="[151,405,649,671]" italics="true" pageId="7" pageNumber="144">Glamyromyrmex reticeps</emphasis>
(Kempf)
</taxonomicName>
. Combination in
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<emphasis id="9194EA9F4A06FF940A9FFD74FCC1FD40" box="[676,845,649,671]" italics="true" pageId="7" pageNumber="144">Glamyromyrmex</emphasis>
:
<treatmentCitation id="2241109C4A06FF940B60FD74FB99FD40" author="" box="[859,1045,649,671]" page="208" pageId="7" pageNumber="144">
<bibRefCitation id="C7714B7C4A06FF940B60FD74FC6EFD40" box="[859,994,649,671]" pageId="7" pageNumber="144" refId="ref7686" refString="Bolton, B. (1995) A new general catalogue of the ants of the world. Harvard University Press, Cambridge, MA, 504 pp." type="book">Bolton, 1995</bibRefCitation>
: 208
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.
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</paragraph>
<paragraph id="A35F368D4A06FF9408ACFD54FC14FD61" blockId="7.[151,1191,618,733]" box="[151,920,680,702]" pageId="7" pageNumber="144">
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<taxonomicName id="64E04D0E4A06FF9408ACFD54FE23FD61" ID-CoL="4QQCT" authority="(Kempf)" authorityName="Kempf" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[151,431,680,702]" class="Insecta" family="Formicidae" genus="Pyramica" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF9408ACFD54FEC3FD61" box="[151,335,681,702]" italics="true" pageId="7" pageNumber="144">Pyramica reticeps</emphasis>
(Kempf)
</taxonomicName>
. Combination in
<taxonomicName id="64E04D0E4A06FF940A66FD54FC19FD61" ID-CoL="75X9" authority=": Bolton, 1999: 1672" authorityName=": Bolton, 1999:" authorityPageNumber="1672" authorityYear="1672" box="[605,917,680,702]" class="Insecta" family="Formicidae" genus="Pyramica" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A06FF940A66FD54FD33FD61" box="[605,703,681,702]" italics="true" pageId="7" pageNumber="144">Pyramica</emphasis>
:
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: 1672
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.
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<paragraph id="A35F368D4A06FF9408ACFD3AFB2BFD03" blockId="7.[151,1191,618,733]" box="[151,1191,710,733]" pageId="7" pageNumber="144">
<treatmentCitationGroup id="83F011A34A06FF9408ACFD3AFB2BFD03" box="[151,1191,710,733]" pageId="7" pageNumber="144">
<taxonomicName id="64E04D0E4A06FF9408ACFD3AFE45FD03" authority="(Kempf)" authorityName="Kempf" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[151,457,710,733]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF9408ACFD3AFEE4FD02" box="[151,360,711,733]" italics="true" pageId="7" pageNumber="144">Strumigenys reticeps</emphasis>
(Kempf)
</taxonomicName>
. Combination in
<taxonomicName id="64E04D0E4A06FF940A4CFD3AFB2FFD03" ID-CoL="7PJL" authority=": Baroni Urbani &amp; De Andrade, 2007: 126" authorityName=": Baroni Urbani &amp; De Andrade" authorityPageNumber="126" authorityYear="2007" box="[631,1187,710,732]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A06FF940A4CFD3AFD7FFD03" box="[631,755,711,732]" italics="true" pageId="7" pageNumber="144">Strumigenys</emphasis>
:
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: 126
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.
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</paragraph>
</subSubSection>
<subSubSection id="EBFA65064A06FF9A08ACFCF4FBFFFDBF" lastPageId="9" lastPageNumber="146" pageId="7" pageNumber="144" type="description">
<paragraph id="A35F368D4A06FF9408ACFCF4FB08FCB5" blockId="7.[151,1437,777,2026]" pageId="7" pageNumber="144">
<emphasis id="9194EA9F4A06FF9408ACFCF4FDA5FCFE" bold="true" box="[151,553,777,802]" italics="true" pageId="7" pageNumber="144">Worker measurements and indices.</emphasis>
HL (0.45–0.52); HW (0.35–0.40); ML (0.05–0.07); EL (0.04–0.07); SL (0.19– 0.24); PW (0.25–0.27); WL (0.48–0.53);
<collectingCountry id="DBF7761D4A06FF940A50FCD3FD03FC9A" box="[619,655,814,837]" name="Philippines" pageId="7" pageNumber="144">PH</collectingCountry>
(0.12–0.13); PL (0.22–0.28); DPW (0.11–0.14) mm. CI (0.75–0.78); MI (0.10–0.15); OI (0.11–0.18); SI (0.51–0.66); LPI (0.46–0.54); DPI (0.46–0.50). (n=4).
</paragraph>
<paragraph id="A35F368D4A06FF9408FCFC89FD41FBC2" blockId="7.[151,1437,777,2026]" pageId="7" pageNumber="144">
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<collectingCounty id="4A3E4E014A06FF9408FCFC89FECEFC52" box="[199,322,884,909]" pageId="7" pageNumber="144">Specimens</collectingCounty>
studied.
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,
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, C. G. P.,
<collectorName id="0E15535B4A06FF940954FC64FE52FC6E" box="[367,478,921,946]" pageId="7" pageNumber="144">Falbot, L.</collectorName>
col. and
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,
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,
<location id="A63F60564A06FF940B1BFC64FC6CFC6D" LSID="urn:lsid:plazi:treatment:2B49879B4A06FF9A08ACFE02FBFFFDBF:A63F60564A06FF940B1BFC64FC6CFC6D" box="[800,992,921,946]" country="Brazil" county="Specimens" latitude="-20.758455" longLatPrecision="1" longitude="-42.86379" municipality="Irati" name="Ribeirao Grande" pageId="7" pageNumber="144" stateProvince="Parana">Ribeirão Grande</location>
,
<location id="A63F60564A06FF940BD7FC64FB57FC6E" LSID="urn:lsid:plazi:treatment:2B49879B4A06FF9A08ACFE02FBFFFDBF:A63F60564A06FF940BD7FC64FB57FC6E" box="[1004,1243,921,946]" country="Brazil" county="Specimens" latitude="-20.758455" longLatPrecision="1" longitude="-42.86379" municipality="Irati" name="Fazenda Intermontes" pageId="7" pageNumber="144" stateProvince="Parana">Fazenda Intermontes</location>
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;
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<collectingDate id="C71AE9A54A06FF9408ACFC43FF7AFC09" box="[151,246,958,982]" pageId="7" pageNumber="144" value="2008-11">XI.2008</collectingDate>
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;
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<collectingDate id="C71AE9A54A06FF940939FC43FED3FC09" box="[258,351,958,982]" pageId="7" pageNumber="144" value="2009-04">IV.2009</collectingDate>
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.
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point-mounted voucher specimens deposited in
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.
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,
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,
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Mata
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&amp;
<collectorName id="0E15535B4A06FF940BD7FC1FFBC2FC25" box="[1004,1102,993,1018]" pageId="7" pageNumber="144">N. Safar</collectorName>
,
<collectorName id="0E15535B4A06FF940C60FC1CFB45FC25" box="[1115,1225,993,1018]" pageId="7" pageNumber="144">Specimen</collectorName>
UFV-LABECOL- 0 0 0 0 0 5.
<collectorName id="0E15535B4A06FF9408C2FBF8FE3CFBC1" box="[249,432,1029,1054]" pageId="7" pageNumber="144">Epigeic Winkler</collectorName>
E-13.
<collectorName id="0E15535B4A06FF9409C0FBF8FDE1FBC1" box="[507,621,1029,1054]" pageId="7" pageNumber="144">Deposited</collectorName>
in UFV.
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</paragraph>
<paragraph id="A35F368D4A06FF9408FCFBD4FD1BF915" blockId="7.[151,1437,777,2026]" pageId="7" pageNumber="144">
<emphasis id="9194EA9F4A06FF9408FCFBD4FED6FB9E" bold="true" box="[199,346,1065,1090]" italics="true" pageId="7" pageNumber="144">Morphology.</emphasis>
The original description made by
<bibRefCitation id="C7714B7C4A06FF940B2AFBD4FC36FB9D" box="[785,954,1065,1090]" pageId="7" pageNumber="144" refId="ref8312" refString="Kempf, W. W. (1969) Miscellaneous studies on Neotropical ants. V. (Hymenoptera, Formicidae). Studia Entomologica, 12, 273 - 296." type="journal article">Kempf (1969)</bibRefCitation>
is complete and provides most of the characteristics found in this species. There are only a small number of features that appears to vary among specimens. The size of the spiniform projection on the anterior margin of the clypeus is smaller in some specimens collected in the eastern region of
<collectingRegion id="6124F86F4A06FF940A29FB6BFD08FB71" box="[530,644,1173,1198]" country="Brazil" name="Sao Paulo" pageId="7" pageNumber="144">São Paulo</collectingRegion>
state, in the Peripheral Depression, although this variation is discrete. The promesonotal sculpture varies in intensity and size, being well-marked and prolonged almost to the propodeal dorsum in some specimens, and less marked and restricted to the promesonotal disc in others. The dorsum of the petiole node is normally as long as wide, but is wider than long in some specimens. Similar to
<taxonomicName id="64E04D0E4A06FF940C8FFAFFFAABFAC6" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1204,1319,1281,1305]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A06FF940C8FFAFFFAABFAC6" box="[1204,1319,1281,1305]" italics="true" pageId="7" pageNumber="144">S. thaxteri</emphasis>
</taxonomicName>
, the scape ventral surface is mostly densely reticulate rugulose with a smooth and shining elongate area extending up to halfway along the posterior margin, and the width is relatively uniform throughout the length. However, the sculpture is less marked when compared to
<taxonomicName id="64E04D0E4A06FF940AB4FA93FC88FA5A" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[655,772,1389,1413]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A06FF940AB4FA93FC88FA5A" box="[655,772,1389,1413]" italics="true" pageId="7" pageNumber="144">S. thaxteri</emphasis>
</taxonomicName>
.
<bibRefCitation id="C7714B7C4A06FF940B2FFA90FC39FA59" box="[788,949,1389,1414]" pageId="7" pageNumber="144" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton (2000)</bibRefCitation>
was uncertain about the orientation of the pilosity along the leading edge of the scape due to the possible loss of hairs in the specimens he observed. On the specimens studied in the present work, the hairs found in this region are filiform, with a few flagellate hairs, all of them oriented towards the apex of the scape. They are extremely fine and probably easily lost through abrasion. Most measurements obtained from the studied specimens are similar to those obtained by
<bibRefCitation id="C7714B7C4A06FF940CFFFA00FAE4F9C9" box="[1220,1384,1533,1558]" pageId="7" pageNumber="144" refId="ref8312" refString="Kempf, W. W. (1969) Miscellaneous studies on Neotropical ants. V. (Hymenoptera, Formicidae). Studia Entomologica, 12, 273 - 296." type="journal article">Kempf (1969)</bibRefCitation>
and
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. However, they have lower values of DPW (Dorsal Petiolar Width) compared to those obtained by Brown (1969). This discrepancy could be a reflection of shape variation of the petiole node. However, the original description and illustration are similar to some specimens observed in this study, more precisely with those with lower values of DPW. A thorough study of shape variation using analytical tools would better describe these structural nuances in the available specimens.
</paragraph>
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<emphasis id="9194EA9F4A06FF9408FCF928FCB4F932" box="[199,824,1749,1774]" italics="true" pageId="7" pageNumber="144">
<emphasis id="9194EA9F4A06FF9408FCF928FDC9F931" bold="true" box="[199,581,1749,1774]" italics="true" pageId="7" pageNumber="144">Morphology and natural history.</emphasis>
<taxonomicName id="64E04D0E4A06FF940A75F92BFCB4F932" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[590,824,1749,1773]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="thaxteri">Strumigenys thaxteri</taxonomicName>
</emphasis>
and
<taxonomicName id="64E04D0E4A06FF940B49F92BFC6BF932" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[882,999,1750,1773]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF940B49F92BFC6BF932" box="[882,999,1750,1773]" italics="true" pageId="7" pageNumber="144">S. reticeps</emphasis>
</taxonomicName>
are the only members of the informal
<taxonomicName id="64E04D0E4A06FF9408ACF904FF62F8CE" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[151,238,1785,1809]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A06FF9408ACF904FF62F8CE" box="[151,238,1785,1809]" italics="true" pageId="7" pageNumber="144">thaxteri</emphasis>
</taxonomicName>
group proposed by
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. They both share a similar mandibular shape, with serially dentate mandibles and a convex dorsal margin when seen laterally; an acute triangular tooth on the cephalic dorsum, prominent humeral angles in dorsal view; spongiform appendages on the petiole and postpetiole, and the body clothed with abundant long and standing, flexuous hairs.
<taxonomicName id="64E04D0E4A06FF940B23F89BFB8CF8A2" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[792,1024,1894,1917]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF940B23F89BFB8CF8A2" box="[792,1024,1894,1917]" italics="true" pageId="7" pageNumber="144">Strumigenys reticeps</emphasis>
</taxonomicName>
has the smaller range of the two and is presently known from a few specimens taken in the southern Atlantic Forests of
<collectingCountry id="DBF7761D4A06FF940C6DF874FB16F87D" box="[1110,1178,1929,1954]" name="Brazil" pageId="7" pageNumber="144">Brazil</collectingCountry>
in the states of
<collectingRegion id="6124F86F4A06FF940D6DF874FF6FF819" country="Brazil" name="Minas Gerais" pageId="7" pageNumber="144">Minas Gerais</collectingRegion>
,
<collectingRegion id="6124F86F4A06FF9408C8F850FE2EF819" box="[243,418,1965,1990]" country="Brazil" name="Rio de Janeiro" pageId="7" pageNumber="144">Rio de Janeiro</collectingRegion>
,
<collectingRegion id="6124F86F4A06FF940989F853FDA7F819" box="[434,555,1965,1990]" country="Brazil" name="Sao Paulo" pageId="7" pageNumber="144">São Paulo</collectingRegion>
, and
<collectingRegion id="6124F86F4A06FF940A4BF853FC95F819" box="[624,793,1965,1990]" country="Brazil" name="Santa Catarina" pageId="7" pageNumber="144">Santa Catarina</collectingRegion>
(
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;
<bibRefCitation id="C7714B7C4A06FF940BE8F850FBD8F819" box="[979,1108,1965,1990]" pageId="7" pageNumber="144" refId="ref8849" refString="Silva, T. S. R. (2014) Dacetini (Hymenoptera: Formicidae) da Mata Atlantica. Dissertation Universidade de Sao Paulo, 236 pp. https: // doi. org / 10.11606 / D. 38.2014. tde- 06092014 - 121842" type="book">Silva 2014</bibRefCitation>
, in thesis). The few known specimens suggest the species may be rare and not prone to being collected in litter samples. Even though
<taxonomicName id="64E04D0E4A06FF9B0DBCF82FFF63FF70" baseAuthorityName="Kempf" baseAuthorityYear="1969" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" lastPageId="8" lastPageNumber="145" order="Hymenoptera" pageId="7" pageNumber="144" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A06FF9B0DBCF82FFF63FF70" italics="true" lastPageId="8" lastPageNumber="145" pageId="7" pageNumber="144">S. reticeps</emphasis>
</taxonomicName>
bears long silky hairs similar to
<taxonomicName id="64E04D0E4A09FF9B0A5AFF65FD58FF6F" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[609,724,152,176]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A09FF9B0A5AFF65FD58FF6F" box="[609,724,152,176]" italics="true" pageId="8" pageNumber="145">S. thaxteri</emphasis>
</taxonomicName>
, it lacks robust mandibles and claws, thus its foraging may not necessarily be the same, perhaps taking smaller prey items from the understory. The peculiar posteriorly oriented filiform pilosity in the clypeal dorsum might be related to a distinctive method of perceiving prey or facilitating compound volatilization from a possible clypeal gland. In addition, the long flagellate hairs distributed on the cephalic surface could contribute to perception of hovering prey. The eye length is relatively smaller compared to
<taxonomicName id="64E04D0E4A09FF9B08ACFEB1FE81FEBB" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[151,269,332,356]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A09FF9B08ACFEB1FE81FEBB" box="[151,269,332,356]" italics="true" pageId="8" pageNumber="145">S. thaxteri</emphasis>
</taxonomicName>
(EL&lt;0.07), but both possess rather similar Ocular Index (OI) values. The similar proportion of eye length/head width found in both species possibly indicates a shared prey preference, with the smaller values of eye length in
<taxonomicName id="64E04D0E4A09FF9B093CFE69FEF1FE73" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[263,381,404,428]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A09FF9B093CFE69FEF1FE73" box="[263,381,404,428]" italics="true" pageId="8" pageNumber="145">S. reticeps</emphasis>
</taxonomicName>
simply reflecting an isometric scaling of the eye size with the overall size of this species. Relatively smaller eyes, to a certain extent, may not necessarily imply a greatly reduced perception of potential prey or threats as the perception of environmental light patterns in insects is an interplay of various factors, not just eye size, that enable visually challenging tasks for even relatively small insects (
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Gonzalez-Bellido
<emphasis id="9194EA9F4A09FF9B0CD3FDFCFA96FDC7" box="[1256,1306,512,536]" italics="true" pageId="8" pageNumber="145">et al</emphasis>
. 2011
</bibRefCitation>
).
</paragraph>
<caption id="F79F66054A09FF9B08ACFA24FA81F9D1" httpUri="https://zenodo.org/record/1294209/files/figure.png" pageId="8" pageNumber="145" startId="8.[151,250,1497,1519]" targetBox="[211,1376,589,1476]" targetPageId="8">
<paragraph id="A35F368D4A09FF9B08ACFA24FA81F9D1" blockId="8.[151,1436,1497,1550]" pageId="8" pageNumber="145">
<emphasis id="9194EA9F4A09FF9B08ACFA24FE9BFA31" bold="true" box="[151,279,1497,1519]" pageId="8" pageNumber="145">FIGURE 2.</emphasis>
<taxonomicName id="64E04D0E4A09FF9B091AFA27FE7BFA30" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[289,503,1498,1519]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A09FF9B091AFA27FE7BFA30" box="[289,503,1498,1519]" italics="true" pageId="8" pageNumber="145">Strumigenys reticeps</emphasis>
</taxonomicName>
, worker. Figs (A–C) Specimen UFV-LABECOL-000005: (A) Dorsal view of head. (B) Lateral view of body. (C) Dorsal view of body. Fig (D) Specimen deposited in DZUP, SEM image of tarsal claw.
</paragraph>
</caption>
<paragraph id="A35F368D4A09FF9B08FCF9C6FE2FF863" blockId="8.[151,1437,1595,2016]" pageId="8" pageNumber="145">
Other morphologically similar species are found in the Malaysian
<taxonomicName id="64E04D0E4A09FF9B0BE1F9C6FBCBF98C" box="[986,1095,1595,1619]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="leptothrix">
<emphasis id="9194EA9F4A09FF9B0BE1F9C6FBCBF98C" box="[986,1095,1595,1619]" italics="true" pageId="8" pageNumber="145">leptothrix</emphasis>
</taxonomicName>
group, which also possesses robust, serially dentate mandibles with convex dorsal margin seen laterally, and well-developed spongiform appendages on the petiole and postpetiole. Although most species do not have elongate and flexuous hairs, some have elongate simple hairs on entire dorsal head or restricted to the area behind the highest point of vertex. According to
<bibRefCitation id="C7714B7C4A09FF9B0905F936FE6AF93C" box="[318,486,1739,1764]" pageId="8" pageNumber="145" refId="ref7755" refString="Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1 - 1028." type="journal article">Bolton (2000)</bibRefCitation>
, some species of the
<taxonomicName id="64E04D0E4A09FF9B0ACFF936FCEDF93C" box="[756,865,1739,1763]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="leptothrix">
<emphasis id="9194EA9F4A09FF9B0ACFF936FCEDF93C" box="[756,865,1739,1763]" italics="true" pageId="8" pageNumber="145">leptothrix</emphasis>
</taxonomicName>
group (
<taxonomicName id="64E04D0E4A09FF9B0BFCF936FAF9F93B" authority="(Terayama &amp; Kubota)" authorityName="Terayama &amp; Kubota" baseAuthorityName="Terayama &amp; Kubota" baseAuthorityYear="1989" box="[967,1397,1739,1764]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="elegantula">
<emphasis id="9194EA9F4A09FF9B0BFCF936FBECF93C" box="[967,1120,1739,1763]" italics="true" pageId="8" pageNumber="145">S. elegantula</emphasis>
(Terayama &amp; Kubota)
</taxonomicName>
,
<taxonomicName id="64E04D0E4A09FF9B0DBCF936FEE1F8D8" authority="Menozzi" authorityName="Menozzi" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="jacobsoni">
<emphasis id="9194EA9F4A09FF9B0DBCF936FE88F8D8" italics="true" pageId="8" pageNumber="145">S. jacobsoni</emphasis>
Menozzi
</taxonomicName>
and
<taxonomicName id="64E04D0E4A09FF9B0998F912FDD0F8D8" authority="Bolton" authorityName="Bolton" box="[419,604,1774,1799]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="stheno">
<emphasis id="9194EA9F4A09FF9B0998F912FD8BF8D8" box="[419,519,1775,1799]" italics="true" pageId="8" pageNumber="145">S. stheno</emphasis>
Bolton
</taxonomicName>
) have particular dentition that increases the gripping/holding ability of the mandible, in which larger teeth intercalate with smaller teeth, with all of them slightly out of alignment and the longer teeth strongly inclined medioventrally. However, this arrangement differs from
<taxonomicName id="64E04D0E4A09FF9B0C4AF8CAFB69F890" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1137,1253,1847,1871]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A09FF9B0C4AF8CAFB69F890" box="[1137,1253,1847,1871]" italics="true" pageId="8" pageNumber="145">S. thaxteri</emphasis>
</taxonomicName>
and
<taxonomicName id="64E04D0E4A09FF9B0D24F8CAFA18F890" baseAuthorityName="Kempf" baseAuthorityYear="1969" box="[1311,1428,1847,1871]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="reticeps">
<emphasis id="9194EA9F4A09FF9B0D24F8CAFA18F890" box="[1311,1428,1847,1871]" italics="true" pageId="8" pageNumber="145">S. reticeps</emphasis>
</taxonomicName>
, which have the basal 8–9 teeth larger than those situated more distally, with the apical tooth larger than those immediately preceding it. In any case, given such a diverse genus it is expected that similar problems will be met with different solutions.
</paragraph>
<paragraph id="A35F368D4A09FF9A08FCF83BFBFFFDBF" blockId="8.[151,1437,1595,2016]" lastBlockId="9.[151,1436,151,608]" lastPageId="9" lastPageNumber="146" pageId="8" pageNumber="145">
<emphasis id="9194EA9F4A09FF9B08FCF83BFDB7F801" bold="true" box="[199,571,1990,2015]" italics="true" pageId="8" pageNumber="145">
Sampling arboreal
<taxonomicName id="64E04D0E4A09FF9B099FF83BFDBFF800" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[420,563,1990,2015]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="genus">Strumigenys</taxonomicName>
.
</emphasis>
The sparse records for both species and the huge gap in the distribution for
<taxonomicName id="64E04D0E4A09FF9A0DBCF83AFF62FF6F" baseAuthorityName="Wheeler" baseAuthorityYear="1916" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" lastPageId="9" lastPageNumber="146" order="Hymenoptera" pageId="8" pageNumber="145" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A09FF9A0DBCF83AFF62FF6F" italics="true" lastPageId="9" lastPageNumber="146" pageId="8" pageNumber="145">S. thaxteri</emphasis>
</taxonomicName>
imply both are relatively scarce. If their foraging is mostly upon understory vegetation and not in the leaf litter then this apparent scarcity can be partially considered as a sampling artifact since leaf litter sifting is poorly suited for retrieving arboreal foraging ants. The locality label of the imaged
<typeStatus id="7C5B882F4A08FF9A0C15FF1DFB09FF27" box="[1070,1157,224,248]" pageId="9" pageNumber="146" type="syntype">syntype</typeStatus>
states “from beatings”, implying the collecting method used to capture the material studied by
<bibRefCitation id="C7714B7C4A08FF9A0BE8FEF9FB05FEC2" box="[979,1161,260,285]" pageId="9" pageNumber="146" refId="ref9045" refString="Wheeler, W. M. (1916) Ants collected in Trinidad by Professor Roland Thaxter, Mr. F. W. Urich, and others. Bulletin of the Museum of Comparative Zoology, 60, 323 - 330." type="journal article">Wheeler (1916)</bibRefCitation>
. The widespread use of leaf-litter sifters coupled with processing the litter using Winkler
<typeStatus id="7C5B882F4A08FF9A0BA2FED5FC45FE9F" box="[921,969,296,320]" pageId="9" pageNumber="146">type</typeStatus>
extractors has been a milestone for ant collecting, changing our concept of ant diversity, especially that of ground ants. Our knowledge of the diversity of the genus
<taxonomicName id="64E04D0E4A08FF9A0931FE8DFE1FFE58" authorityName=": Baroni Urbani &amp; De Andrade" authorityYear="2007" box="[266,403,368,391]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="genus">
<emphasis id="9194EA9F4A08FF9A0931FE8DFE1FFE58" box="[266,403,368,391]" italics="true" pageId="9" pageNumber="146">Strumigenys</emphasis>
</taxonomicName>
has especially been broadened and deepened, but this very diversity obliges us to try novel collecting methods and explore habitats not usually probed by myrmecologists. A classical insect collecting method, the beating tray, has been used by generations of entomologists for general collecting or collecting insects associated with vegetation. Perhaps now is the time to incorporate this contraption into the ant collector’s toolkit and collect the specimens that should fill in the distribution of
<taxonomicName id="64E04D0E4A08FF9A0BB8FDFDFC76FDC7" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[899,1018,512,536]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A08FF9A0BB8FDFDFC76FDC7" box="[899,1018,512,536]" italics="true" pageId="9" pageNumber="146">S. thaxteri</emphasis>
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within the Amazon-Orinoco Basin. Jacquemin’s use of this technique permitted the collection of an additional specimen of
<taxonomicName id="64E04D0E4A08FF9A0C45FDD9FB7EFDE3" baseAuthorityName="Wheeler" baseAuthorityYear="1916" box="[1150,1266,548,572]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="thaxteri">
<emphasis id="9194EA9F4A08FF9A0C45FDD9FB7EFDE3" box="[1150,1266,548,572]" italics="true" pageId="9" pageNumber="146">S. thaxteri</emphasis>
</taxonomicName>
and in
<collectingRegion id="6124F86F4A08FF9A0D71FDD9FA10FDE2" box="[1354,1436,548,573]" country="Fiji" name="Central" pageId="9" pageNumber="146">Central</collectingRegion>
America some myrmecologists are fully embracing vegetation beating (ADMAC 2016).
</paragraph>
</subSubSection>
</treatment>
</document>

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<heading id="F81781E14A08FF9A08ACFD54FE6FFD1D" bold="true" box="[151,483,680,707]" fontSize="11" level="1" pageId="9" pageNumber="146" reason="1">
<emphasis id="9194EA9F4A08FF9A08ACFD54FE6FFD1D" bold="true" box="[151,483,680,707]" pageId="9" pageNumber="146">
Synonymy of
<emphasis id="9194EA9F4A08FF9A0979FD55FE6FFD1D" bold="true" box="[322,483,680,706]" italics="true" pageId="9" pageNumber="146">
<taxonomicName id="64E04D0E4A08FF9A0979FD55FE52FD1D" authorityName="Lattke &amp; Aguirre" authorityYear="2015" box="[322,478,680,706]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="lojanensis">S. lojanensis</taxonomicName>
.
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<taxonomicName id="64E04D0E4A08FF9A08ACFD0CFC8EFCD9" authority="Baroni Urbani &amp; De Andrade, 2007: 143" authorityName="Baroni Urbani &amp; De Andrade" authorityPageNumber="143" authorityYear="2007" box="[151,770,752,774]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="onorei">
<emphasis id="9194EA9F4A08FF9A08ACFD0CFED6FCD9" box="[151,346,753,774]" italics="true" pageId="9" pageNumber="146">Strumigenys onorei</emphasis>
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<bibRefCitation id="C7714B7C4A08FF9A095AFD0DFD5DFCD9" box="[353,721,752,774]" pageId="9" pageNumber="146" refId="ref7570" refString="Baroni Urbani, C. &amp; De Andrade, M. L. (2007) The ant tribe Dacetini: limits and constituent genera, with descriptions of new species (Hymenoptera, Formicidae). Annali del Museo Civico di Storia Naturale Giacomo Doria, 99, 1 - 191." type="journal article">Baroni Urbani &amp; De Andrade, 2007</bibRefCitation>
: 143
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, fig. 50 (w.) Ecuador
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</paragraph>
<paragraph id="A35F368D4A08FF9A08ACFCF2FB84FCFB" blockId="9.[151,1032,752,804]" box="[151,1032,782,804]" pageId="9" pageNumber="146">
<taxonomicName id="64E04D0E4A08FF9A08ACFCF2FD27FCFB" authority="Lattke &amp; Aguirre, 2014: 176" authorityName="Lattke &amp; Aguirre" authorityPageNumber="176" authorityYear="2015" box="[151,683,782,804]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="lojanensis">
<emphasis id="9194EA9F4A08FF9A08ACFCF2FE0CFCFB" box="[151,384,782,804]" italics="true" pageId="9" pageNumber="146">Strumigenys lojanensis</emphasis>
Lattke &amp; Aguirre, 2014: 176
</taxonomicName>
, figs. 1–3 (w., q.) Ecuador.
<emphasis id="9194EA9F4A08FF9A0BF9FCF2FB84FCFB" bold="true" box="[962,1032,783,804]" pageId="9" pageNumber="146">n. syn.</emphasis>
</paragraph>
<paragraph id="A35F368D4A08FF9A08ACFCB1FB25FC73" blockId="9.[151,1436,844,941]" pageId="9" pageNumber="146">
A new evaluation of the characters used to define
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<emphasis id="9194EA9F4A08FF9A0AF3FCB1FCDAFCBB" box="[712,854,844,868]" italics="true" pageId="9" pageNumber="146">S. lojanensis</emphasis>
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leave little doubt it is the same species as
<taxonomicName id="64E04D0E4A08FF9A0D0AFCB1FA19FCBB" box="[1329,1429,844,868]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="onorei">
<emphasis id="9194EA9F4A08FF9A0D0AFCB1FA19FCBB" box="[1329,1429,844,868]" italics="true" pageId="9" pageNumber="146">S. onorei</emphasis>
</taxonomicName>
. All characters supposedly diagnostic for
<taxonomicName id="64E04D0E4A08FF9A0A66FC8DFD65FC57" authorityName="Lattke &amp; Aguirre" authorityYear="2015" box="[605,745,880,904]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="lojanensis">
<emphasis id="9194EA9F4A08FF9A0A66FC8DFD65FC57" box="[605,745,880,904]" italics="true" pageId="9" pageNumber="146">S. lojanensis</emphasis>
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agree with the description of
<taxonomicName id="64E04D0E4A08FF9A0C0FFC8DFB1BFC58" box="[1076,1175,880,903]" class="Insecta" family="Formicidae" genus="Strumigenys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="9" pageNumber="146" phylum="Arthropoda" rank="species" species="onorei">
<emphasis id="9194EA9F4A08FF9A0C0FFC8DFB1BFC58" box="[1076,1175,880,903]" italics="true" pageId="9" pageNumber="146">S. onorei</emphasis>
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and since we could not find any other that may support its distinctness we regard it as a junior synonym of
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<emphasis id="9194EA9F4A08FF9A0C06FC69FB2EFC73" box="[1085,1186,916,940]" italics="true" pageId="9" pageNumber="146">S. onorei</emphasis>
</taxonomicName>
.
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3.
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, 1895, Proc. Calif. Acad. Sc. (2) 5: 895 (Worker; Mexico, Nayarit: Tepic, Santiago Ixcuintla). - Wheeler, 1907: 726-7 (Worker). - Weber, 1940: 409 (Worker; key).
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<paragraph id="4EE9519E35B3BB77CEFB629B0CCEFD63" pageNumber="172">Types. - Workers collected by Eisen and Vaslit at Tepic and Santiago Ixcuintla in Nayarit State, Mexico; presumably deposited in the U. S. National Museum. No specimens seen. Wheeler (1907) redescribed the species upon a syntype worker. From this description the ensuing information may be gleaned:</paragraph>
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Worker. - Rather close to
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, with the same reticulate-punctate integument. The differences from
<taxonomicName id="52BA1C9B046FE9874762601EE7C28106" LSID-HNS="urn:lsid:biosci.ohio-state.edu:osuc_concepts:28551" class="Insecta" family="Formicidae" genus="Cyphomyrmex" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-HNS="Cyphomyrmex wheeleri Forel" order="Hymenoptera" pageNumber="172" phylum="Arthropoda" rank="species" species="wheeleri">wheeleri</taxonomicName>
are as follows: petiole and postpetiole strikingly transverse, the former lacking the postero-dorsal pair of teeth; occipital corners broadly truncate, with the apex of the antennal scrobe rectangular, not rounded; antennal scapes a little projecting beyond scrobe; thoracic ridges and projections much bluner; frontal lobes, posteriorly, with a triangular depression in its surface. Size and color as in
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. Inasmuch as Wheeler does not mention them, the midpronotal tubercles seem to be lacking also.
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<paragraph id="392D394E0FC70FB949E56CFF5279A1F3" pageNumber="172">The present species is not included in the key.</paragraph>
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