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<document id="B06891BF2A08BFE0737ADDC4F10F69E1" ID-CLB-Dataset="46939" ID-DOI="10.5281/zenodo.199864" ID-GBIF-Dataset="4f7cc18f-57fc-4bd7-aaa7-33268de5018a" ID-ISSN="1175-5326" ID-Zenodo-Dep="199864" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460348200349" checkinUser="plazi" docAuthor="Longino, John T." docDate="2010" docId="934F87DB39644E7FACD785842E11FB9B" docLanguage="en" docName="zt02720p058.pdf" docOrigin="Zootaxa 2720" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Megalomyrmex reina Longino, new species" docType="treatment" docVersion="12" lastPageNumber="54" masterDocId="6F76FFA339764E6CAC4084172A7FFF94" masterDocTitle="A taxonomic review of the ant genus Megalomyrmex Forel (Hymenoptera: Formicidae) in Central America" masterLastPageNumber="58" masterPageNumber="35" pageNumber="53" updateTime="1698293559790" updateUser="ExternalLinkService">
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<mods:title id="EC2DC49D509E51311DE1D0ED4F2EFD9C">A taxonomic review of the ant genus Megalomyrmex Forel (Hymenoptera: Formicidae) in Central America</mods:title>
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<mods:namePart id="8B03A74F5F207C6BFFC337C876D72525">Longino, John T.</mods:namePart>
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<mods:date id="270A30EAC574A10DB37BC21F5CCB0C6E">2010</mods:date>
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<treatment id="934F87DB39644E7FACD785842E11FB9B" ID-DOI="http://doi.org/10.5281/zenodo.6204423" ID-GBIF-Taxon="119407584" ID-Zenodo-Dep="6204423" LSID="urn:lsid:plazi:treatment:934F87DB39644E7FACD785842E11FB9B" httpUri="http://treatment.plazi.org/id/934F87DB39644E7FACD785842E11FB9B" lastPageId="19" lastPageNumber="54" pageId="18" pageNumber="53">
<subSubSection id="53FC654639644E7EACD785842B51FE5B" pageId="18" pageNumber="53" type="nomenclature">
<paragraph id="1B5936CD39644E7EACD7858428EEFE38" blockId="18.[151,657,403,463]" box="[151,657,403,428]" pageId="18" pageNumber="53">
<heading id="401181A139644E7EACD7858428EEFE38" bold="true" box="[151,657,403,428]" fontSize="10" level="2" pageId="18" pageNumber="53" reason="2">
<emphasis id="2992EADF39644E7EACD7858428EEFE38" bold="true" box="[151,657,403,428]" pageId="18" pageNumber="53">
<taxonomicName id="DCE64D4E39644E7EACD785842B84FE38" authority="Longino" authorityName="Longino" box="[151,507,403,428]" class="Insecta" family="Formicidae" genus="Megalomyrmex" kingdom="Animalia" order="Hymenoptera" pageId="18" pageNumber="53" phylum="Arthropoda" rank="species" species="reina" status="sp. nov.">
<emphasis id="2992EADF39644E7EACD785842BF0FE38" bold="true" box="[151,399,403,428]" italics="true" pageId="18" pageNumber="53">Megalomyrmex reina</emphasis>
Longino
</taxonomicName>
,
<taxonomicNameLabel id="32A157A439644E7EAE47858328EEFE38" box="[519,657,403,428]" pageId="18" pageNumber="53" rank="species">new species</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="1B5936CD39644E7EACD785A02B51FE5B" blockId="18.[151,657,403,463]" box="[151,302,439,463]" pageId="18" pageNumber="53">
(
<figureCitation id="83DD2A4839644E7EACDF85A02A93FE5B" box="[159,236,439,463]" captionStart="FIGURE 11" captionStartId="18.[151,244,1765,1786]" captionTargetBox="[188,1399,919,1738]" captionTargetId="figure@18.[181,1405,911,1743]" captionTargetPageId="18" captionText="FIGURE 11. Megalomyrmex reina. A. Holotype queen, face view. B. Same, lateral view. C. Mandible. D. Petiole and postpetiole, lateral view. Scale bar on face view = 0.5 mm, on lateral view = 1.0 mm." httpUri="https://zenodo.org/record/199875/files/figure.png" pageId="18" pageNumber="53">Fig. 11</figureCitation>
AD)
</paragraph>
</subSubSection>
<subSubSection id="53FC654639644E7EACD786172851FD10" pageId="18" pageNumber="53" type="materials_examined">
<paragraph id="1B5936CD39644E7EACD786172906FDCB" blockId="18.[151,1436,511,860]" pageId="18" pageNumber="53">
<emphasis id="2992EADF39644E7EACD786172B38FD8C" bold="true" box="[151,327,511,536]" pageId="18" pageNumber="53">
<typeStatus id="C45D886F39644E7EACD786172AADFD8C" box="[151,210,512,536]" pageId="18" pageNumber="53">Type</typeStatus>
material.
</emphasis>
<emphasis id="2992EADF39644E7EAD1186172873FD8C" box="[337,524,512,536]" italics="true" pageId="18" pageNumber="53">
<typeStatus id="C45D886F39644E7EAD1186172BC8FD8C" box="[337,439,512,536]" pageId="18" pageNumber="53" type="holotype">Holotype</typeStatus>
queen.
</emphasis>
<collectingCountry id="63F1765D39644E7EAE5585E828C1FD83" box="[533,702,511,535]" name="Costa Rica" pageId="18" pageNumber="53">COSTA RICA</collectingCountry>
, Alajuela: Rio Peñas Blancas,
<geoCoordinate id="7ED2500A39644E7EA86485E82EFFFD83" box="[1060,1152,511,535]" direction="north" orientation="latitude" pageId="18" pageNumber="53" precision="925" value="10.316667">10°19'N</geoCoordinate>
<geoCoordinate id="7ED2500A39644E7EA8CA85E82E93FD83" box="[1162,1260,511,535]" direction="west" orientation="longitude" pageId="18" pageNumber="53" precision="925" value="-84.71667">84°43'W</geoCoordinate>
,
<quantity id="DC1E9B2839644E7EA8BB85E82F39FD83" box="[1275,1350,511,535]" metricMagnitude="2" metricUnit="m" metricValue="8.0" pageId="18" pageNumber="53" unit="m" value="800.0">800 m</quantity>
,
<date id="6F58100D39644E7EA91585E82AB0FDA8" pageId="18" pageNumber="53" value="2004-03-02">2 Mar 2004</date>
(J. Longino#5278-s) [
<collectionCode id="7DF7AE0839644E7EAD8886332875FDA8" LSID="urn:lsid:biocol.org:col:33791" box="[456,522,548,572]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:33791" name="Museum of Comparative Zoology" pageId="18" pageNumber="53">MCZ</collectionCode>
, unique specimen identifier
<collectionCode id="7DF7AE0839644E7EAF06863329F7FDA8" box="[838,904,548,572]" pageId="18" pageNumber="53">JTLC</collectionCode>
000005356].
<emphasis id="2992EADF39644E7EA85B86322EB4FDA8" box="[1051,1227,549,572]" italics="true" pageId="18" pageNumber="53">
<typeStatus id="C45D886F39644E7EA85B86322EFDFDA8" box="[1051,1154,549,572]" pageId="18" pageNumber="53" type="paratype">Paratype</typeStatus>
queen
</emphasis>
: same as
<typeStatus id="C45D886F39644E7EA97A86332FE3FDA8" box="[1338,1436,548,572]" pageId="18" pageNumber="53" type="holotype">holotype</typeStatus>
except
<date id="6F58100D39644E7EACA786502B15FDCB" box="[231,362,583,607]" pageId="18" pageNumber="53" value="2008-03-04">4 Mar 2008</date>
(J. Longino#6182.2) [
<collectionCode id="7DF7AE0839644E7EAE24865028E0FDCB" LSID="urn:lsid:biocol.org:col:34700" box="[612,671,583,607]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15690" name="California Academy of Sciences" pageId="18" pageNumber="53">CAS</collectionCode>
,
<collectionCode id="7DF7AE0839644E7EAEEA86502893FDCB" box="[682,748,583,607]" pageId="18" pageNumber="53">JTLC</collectionCode>
000007217].
</paragraph>
<paragraph id="1B5936CD39644E7EAC87867C2851FD10" blockId="18.[151,1436,511,860]" box="[199,558,619,644]" pageId="18" pageNumber="53">
<emphasis id="2992EADF39644E7EAC87867C2BDAFD10" bold="true" box="[199,421,619,644]" pageId="18" pageNumber="53">Geographic range.</emphasis>
<collectingCountry id="63F1765D39644E7EADEC867B2855FD10" box="[428,554,620,644]" name="Costa Rica" pageId="18" pageNumber="53">Costa Rica</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="53FC654639644E7EAC8786982E86FD7B" pageId="18" pageNumber="53" type="diagnosis">
<paragraph id="1B5936CD39644E7EAC8786982E86FD7B" blockId="18.[151,1436,511,860]" pageId="18" pageNumber="53">
<emphasis id="2992EADF39644E7EAC8786982B3EFD3C" bold="true" box="[199,321,655,680]" pageId="18" pageNumber="53">Diagnosis.</emphasis>
Mandible with large apical tooth and 56 smaller basal teeth; dorsal surface of mandible striate; ventral margin of petiole with large translucent longitudinal flange, ventral margin of flange erose, with irregular jagged posteriorly-directed teeth; ventral margin of postpetiole with large, acute anteroventral tooth.
</paragraph>
</subSubSection>
<subSubSection id="53FC654639644E7FAC8786EC2EDAFE60" lastPageId="19" lastPageNumber="54" pageId="18" pageNumber="53" type="description">
<paragraph id="1B5936CD39644E7EAC8786EC2A97FCA3" blockId="18.[151,1436,511,860]" pageId="18" pageNumber="53">
<emphasis id="2992EADF39644E7EAC8786EC2B26FC80" bold="true" box="[199,345,763,788]" pageId="18" pageNumber="53">Description.</emphasis>
<emphasis id="2992EADF39644E7EAD2086EA2BD6FC80" box="[352,425,765,788]" italics="true" pageId="18" pageNumber="53">Queen</emphasis>
.
<emphasis id="2992EADF39644E7EADF886EA2825FC80" box="[440,602,765,788]" italics="true" pageId="18" pageNumber="53">Measurements</emphasis>
(
<typeStatus id="C45D886F39644E7EAE2A86EB28ACFC80" box="[618,723,764,788]" pageId="18" pageNumber="53" type="holotype">holotype</typeStatus>
): HW 0.833, HL 0.872, SL 0.926, EL 0.276, ML 1.519, CI 96, SI 106.
</paragraph>
<paragraph id="1B5936CD39644E7EAC8787522E8AFCC8" blockId="18.[151,1436,511,860]" box="[199,1269,836,860]" pageId="18" pageNumber="53">
<emphasis id="2992EADF39644E7EAC8787522B16FCC8" box="[199,361,837,860]" italics="true" pageId="18" pageNumber="53">Measurements</emphasis>
(
<typeStatus id="C45D886F39644E7EAD3887532B9FFCC8" box="[376,480,836,860]" pageId="18" pageNumber="53" type="paratype">paratype</typeStatus>
): HW 0.853, HL 0.874, SL 0.928, EL 0.294, ML 1.579, CI 98, SI 106.
</paragraph>
<caption id="4F99664539644E7EACD782F2292DF883" httpUri="https://zenodo.org/record/199875/files/figure.png" pageId="18" pageNumber="53" targetBox="[188,1399,919,1738]" targetPageId="18">
<paragraph id="1B5936CD39644E7EACD782F2292DF883" blockId="18.[151,1436,1765,1815]" pageId="18" pageNumber="53">
<emphasis id="2992EADF39644E7EACD782F22B66F96E" bold="true" box="[151,281,1765,1786]" pageId="18" pageNumber="53">FIGURE 11.</emphasis>
<taxonomicName id="DCE64D4E39644E7EAD6182F22B8FF96E" box="[289,496,1765,1786]" class="Insecta" family="Formicidae" genus="Megalomyrmex" kingdom="Animalia" order="Hymenoptera" pageId="18" pageNumber="53" phylum="Arthropoda" rank="species" species="reina">
<emphasis id="2992EADF39644E7EAD6182F22B8FF96E" box="[289,496,1765,1786]" italics="true" pageId="18" pageNumber="53">Megalomyrmex reina</emphasis>
</taxonomicName>
. A. Holotype queen, face view. B. Same, lateral view. C. Mandible. D. Petiole and postpetiole, lateral view. Scale bar on face view = 0.5 mm, on lateral view = 1.0 mm.
</paragraph>
</caption>
<paragraph id="1B5936CD39644E7FAC8783532EDAFE60" blockId="18.[151,1436,1860,2029]" lastBlockId="19.[151,1436,151,1041]" lastPageId="19" lastPageNumber="54" pageId="18" pageNumber="53">
Palp formula 3,2; mandible with large apical tooth and 56 smaller basal teeth that gradually decrease in size (
<typeStatus id="C45D886F39644E7EACDE83702B7DF8EB" box="[158,258,1895,1919]" pageId="18" pageNumber="53" type="holotype">holotype</typeStatus>
has 5 basal teeth on one mandible, 6 on the other); dorsal surface of mandible faintly striate; anterior clypeal margin smoothly rounded; occipital carina thin, not visible in full-face view, anterior ends extending about 1/3 to 1/2 length of ventral surface of head; face, clypeus, and ventral surface of head smooth and shiny, with a few small rugulae on clypeus beneath frontal lobes and laterally, irregular rugulae on malar space between eye and mandibular insertion, and a few concentric rugae around antennal fossa, piligerous puncta very small, resulting in overall smooth and highly polished appearance; mesosoma smooth and shiny throughout, with longitudinal carinae on metapleuron and a few longitudinal carinae over metapleural gland; notauli fused and barely visible on anterior mesonotum; parapsidal lines distinct, extending about half length of mesonotum; dorsal and posterior faces of propodeum more or less flat, meeting at a low boss; foraminal carina incomplete, curving from metapleural lobes onto posterior face of propodeum but nearly effaced medially; petiole and postpetiole smooth and shining; petiole with short posterior peduncle; ventral margin of petiole with large translucent longitudinal flange, ventral margin of flange erose, with irregular jagged posteriorly-directed teeth (detail of margin varies between
<typeStatus id="C45D886F39654E7FA94485832F19FE38" box="[1284,1382,404,428]" pageId="19" pageNumber="54" type="holotype">holotype</typeStatus>
and
<typeStatus id="C45D886F39654E7FACD785A02A82FE5B" box="[151,253,439,463]" pageId="19" pageNumber="54" type="paratype">paratype</typeStatus>
); ventral margin of postpetiole with large, acute anteroventral tooth; gaster smooth and shining; all dorsal body surfaces and appendages with abundant moderately coarse setae; color dark red brown.
</paragraph>
</subSubSection>
<subSubSection id="53FC654639654E7FAC8785E82980FDCB" pageId="19" pageNumber="54" type="biology_ecology">
<paragraph id="1B5936CD39654E7FAC8785E82980FDCB" blockId="19.[151,1436,151,1041]" pageId="19" pageNumber="54">
<emphasis id="2992EADF39654E7FAC8785E82B58FD8C" bold="true" box="[199,295,511,536]" pageId="19" pageNumber="54">Biology.</emphasis>
Both queens were collected in the same locality, in mature montane wet forest. The
<typeStatus id="C45D886F39654E7FA8AF85E82F2EFD83" box="[1263,1361,511,535]" pageId="19" pageNumber="54" type="holotype">holotype</typeStatus>
queen was in a Winkler sample of sifted leaf litter. The
<typeStatus id="C45D886F39654E7FAE948632294AFDA9" box="[724,821,549,573]" pageId="19" pageNumber="54" type="paratype">paratype</typeStatus>
queen was collected as a forager on the ground. The foraging queen had rapid wasp-like behavior, with rapidly vibrating antennae.
</paragraph>
</subSubSection>
<subSubSection id="53FC654639654E7FAC87867B2BD2FD33" pageId="19" pageNumber="54" type="etymology">
<paragraph id="1B5936CD39654E7FAC87867B2BD2FD33" blockId="19.[151,1436,151,1041]" pageId="19" pageNumber="54">
<emphasis id="2992EADF39654E7FAC87867B2B31FD10" bold="true" box="[199,334,620,644]" pageId="19" pageNumber="54">Etymology.</emphasis>
The name of this species refers to the fact that it is known only from queens. It is a noun in apposition and invariant.
</paragraph>
</subSubSection>
<subSubSection id="53FC654639654E7FAC8786A42E11FB9B" pageId="19" pageNumber="54" type="discussion">
<paragraph id="1B5936CD39654E7FAC8786A42EBFFC80" blockId="19.[151,1436,151,1041]" pageId="19" pageNumber="54">
<emphasis id="2992EADF39654E7FAC8786A42B30FD58" bold="true" box="[199,335,691,716]" pageId="19" pageNumber="54">Comments.</emphasis>
The lack of associated workers, in spite of abundant collecting (including many Winkler samples) at the
<typeStatus id="C45D886F39654E7FAC9B86CF2B74FD64" box="[219,267,728,752]" pageId="19" pageNumber="54">type</typeStatus>
locality, raises the possibility that this species is a workerless social parasite. Alternatively, workers may be subterranean associates of attines and thus not acccessible to standard collection techniques.
</paragraph>
<paragraph id="1B5936CD39654E7FACD787082E11FB9B" blockId="19.[151,1436,151,1041]" pageId="19" pageNumber="54">
The mandibular dentition of
<taxonomicName id="DCE64D4E39654E7FADAB8736285BFCAC" box="[491,548,801,824]" class="Insecta" family="Formicidae" genus="Megalomyrmex" kingdom="Animalia" order="Hymenoptera" pageId="19" pageNumber="54" phylum="Arthropoda" rank="species" species="reina">
<emphasis id="2992EADF39654E7FADAB8736285BFCAC" box="[491,548,801,824]" italics="true" pageId="19" pageNumber="54">reina</emphasis>
</taxonomicName>
is highly distinctive and unlike any other
<taxonomicName id="DCE64D4E39654E7FA86287372EAFFCAC" box="[1058,1232,800,824]" class="Insecta" family="Formicidae" genus="Megalomyrmex" kingdom="Animalia" order="Hymenoptera" pageId="19" pageNumber="54" phylum="Arthropoda" rank="genus">
<emphasis id="2992EADF39654E7FA86287372EAFFCAC" box="[1058,1232,800,824]" italics="true" pageId="19" pageNumber="54">Megalomyrmex</emphasis>
</taxonomicName>
species. In other species the dentition varies from a condition of few teeth that gradually decrease in size basally to one in which the two apical teeth are much larger than a series of diminished basal denticles. In contrast,
<taxonomicName id="DCE64D4E39654E7FA8D1877E2EB5FC14" box="[1169,1226,873,896]" class="Insecta" family="Formicidae" genus="Megalomyrmex" kingdom="Animalia" order="Hymenoptera" pageId="19" pageNumber="54" phylum="Arthropoda" rank="species" species="reina">
<emphasis id="2992EADF39654E7FA8D1877E2EB5FC14" box="[1169,1226,873,896]" italics="true" pageId="19" pageNumber="54">reina</emphasis>
</taxonomicName>
has a single large apical tooth, which is long and sharp, followed by a relatively uniform series of smaller teeth. The size difference between the apical and subapical tooth is much greater than in other species. Many socially parasitic ant species have falcate mandibles associated with their ability to attack and subdue hosts. Perhaps the long apical tooth of
<taxonomicName id="DCE64D4E39654E7FACD787EE2AAFFB84" box="[151,208,1017,1040]" class="Insecta" family="Formicidae" genus="Megalomyrmex" kingdom="Animalia" order="Hymenoptera" pageId="19" pageNumber="54" phylum="Arthropoda" rank="species" species="reina">
<emphasis id="2992EADF39654E7FACD787EE2AAFFB84" box="[151,208,1017,1040]" italics="true" pageId="19" pageNumber="54">reina</emphasis>
</taxonomicName>
is such an adaptation, strengthening the conjecture that it may be a social parasite.
</paragraph>
</subSubSection>
</treatment>
</document>