139 lines
12 KiB
XML
139 lines
12 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.580.8153" ID-GBIF-Dataset="cefca615-aea7-4dd8-8afd-80921e906e89" ID-PMC="PMC4829950" ID-Pensoft-Pub="1313-2970-580-45" ID-PubMed="27110208" ID-ZBK="745750AD4D4241E599B9FDEFDE0C5BED" ModsDocAuthor="" ModsDocDate="2016" ModsDocID="1313-2970-580-45" ModsDocOrigin="ZooKeys 580" ModsDocTitle="Revision of the Neotropical diving beetle genus Hydrodessus J. Balfour-Browne, 1953 (Coleoptera, Dytiscidae, Hydroporinae, Bidessini)" checkinTime="1460542594575" checkinUser="pensoft" docAuthor="Miller, Kelly B." docDate="2016" docId="5990ABE1878A86D162D59263431CA130" docLanguage="en" docName="ZooKeys 580: 45-124" docOrigin="ZooKeys 580" docSource="http://dx.doi.org/10.3897/zookeys.580.8153" docTitle="Hydrodessus morsus Miller, 2016, sp. n." docType="treatment" docUuid="32C68BA3-78DC-464D-AD0C-28C975DA8156" docUuidSource="ZooBank" docVersion="5" lastPageNumber="93" masterDocId="FFECFFCDFFE0BD0DFF80D76BAC7FFF89" masterDocTitle="Revision of the Neotropical diving beetle genus Hydrodessus J. Balfour-Browne, 1953 (Coleoptera, Dytiscidae, Hydroporinae, Bidessini)" masterLastPageNumber="124" masterPageNumber="45" pageNumber="91" updateTime="1668162962782" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Revision of the Neotropical diving beetle genus Hydrodessus J. Balfour-Browne, 1953 (Coleoptera, Dytiscidae, Hydroporinae, Bidessini)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Miller, Kelly B.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2016</mods:date>
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<mods:detail type="volume">
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<mods:number>580</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>45</mods:start>
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<mods:end>124</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.580.8153</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.580.8153</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-580-45</mods:identifier>
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<mods:identifier type="ZBK">745750AD4D4241E599B9FDEFDE0C5BED</mods:identifier>
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<mods:identifier type="ZooBank">745750AD4D4241E599B9FDEFDE0C5BED</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="127889815" LSID="urn:lsid:zoobank.org:act:32C68BA3-78DC-464D-AD0C-28C975DA8156" httpUri="http://treatment.plazi.org/id/5990ABE1878A86D162D59263431CA130" lastPageId="48" lastPageNumber="93" pageId="46" pageNumber="91">
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<subSubSection pageId="46" pageNumber="91" type="multiple">
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<paragraph pageId="46" pageNumber="91">Taxon classification Animalia Coleoptera Dytiscidae</paragraph>
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</subSubSection>
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<subSubSection pageId="46" pageNumber="91" type="nomenclature">
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<paragraph pageId="46" pageNumber="91">
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<taxonomicName LSID="http://zoobank.org/32C68BA3-78DC-464D-AD0C-28C975DA8156" class="Insecta" family="Dytiscidae" genus="Hydrodessus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodessus morsus" order="Coleoptera" pageId="46" pageNumber="91" phylum="Arthropoda" rank="species" species="morsus">Hydrodessus morsus</taxonomicName>
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<taxonomicNameLabel pageId="46" pageNumber="91">sp. n.</taxonomicNameLabel>
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Figs 25, 50
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</paragraph>
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</subSubSection>
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<subSubSection pageId="47" pageNumber="92" type="type locality">
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<paragraph pageId="47" pageNumber="92">
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<pageBreakToken pageId="47" pageNumber="92" start="start">Type</pageBreakToken>
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locality.
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</paragraph>
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<paragraph pageId="47" pageNumber="92">
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Venezuela, Amazonas, Cerro de la Neblina, basecamp,
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<geoCoordinate direction="north" orientation="latitude" precision="55" value="0.833">0.833°N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="55" value="-66.167">66.167°W</geoCoordinate>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="47" pageNumber="92" type="diagnosis">
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<paragraph pageId="47" pageNumber="92">Diagnosis.</paragraph>
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<paragraph pageId="47" pageNumber="92">
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This is the smallest
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrodessus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodessus" order="Coleoptera" pageId="47" pageNumber="92" phylum="Arthropoda" rank="genus">Hydrodessus</taxonomicName>
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(TL <1.5 mm). In addition, this species differs in having a low and rounded lateral elytral carina (Fig. 25B), a relatively narrow and apically pointed prosternal process (Fig. 25C), and the metaventrite carinae poorly developed (Fig. 25C). Specimens are concolorous yellow and parallel-sided (Fig. 25A). The male median lobe in lateral aspect is moderately broad basally, weakly curved and apically pointed (Fig. 25D). In ventral aspect the median lobe is slightly constricted subapically and apically rounded (Fig. 25E). The lateral lobe is broad basally and with margins apically evenly convergent to rounded apex (Fig. 25F).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="48" lastPageNumber="93" pageId="47" pageNumber="92" type="description">
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<paragraph pageId="47" pageNumber="92">Description.</paragraph>
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<paragraph pageId="47" pageNumber="92">
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Measurements. TL = 1.4-1.6 mm, GW = 0.5-0.6 mm, PW = 0.5-0.6 mm, HW = 0.4-0.5 mm, EW = 0.3 mm, TL/GW = 2.4-2.6, HW/EW = 1.6-1.7. Body elongate,
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<normalizedToken originalValue="parallel–sided">parallel-sided</normalizedToken>
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, lateral margin distinctly discontinuous between pronotum and elytron, dorsoventrally somewhat compressed (Fig. 25A).
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</paragraph>
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<paragraph pageId="47" pageNumber="92">Coloration (Fig. 25A). Body surfaces yellow throughout.</paragraph>
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<paragraph lastPageId="48" lastPageNumber="93" pageId="47" pageNumber="92">
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Sculpture and structure. Head elongate, anterior clypeal margin broadly rounded; surface finely punctate and shiny; eyes moderately large and large-faceted. Pronotum cordate, widest anterior to middle (Fig. 25A); lateral bead very fine; surface shiny with fine punctation. Elytra elongate, lateral margins subparallel (Fig. 25A); lateral carina indistinct, rounded, present only at humeral angle (Fig. 25B); surface covered with fine punctures. Prosternum relatively flat, not medially carinate; prosternal process elongate triangular, lateral carinae convergent to narrowly pointed apex,
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<pageBreakToken pageId="48" pageNumber="93" start="start">apically</pageBreakToken>
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narrowly separated from Metaventrite (Fig. 25C). Metaventrite with anterior process narrowly triangular, metasternal carinae represented by low, rounded margin of medial flattened surface extending posteriorly to anterior ends of metacoxal lines (Fig. 25C); surface covered with fine punctation. Legs with surfaces largely shiny and impunctate; pro- and mesotibiae moderately broad; metatrochanter strongly offset and apically rounded; metatibia with posteroapical brush of setae; metacoxa covered with fine punctation; metacoxal lines indistinct, medially somewhat approximated, anteriorly divergent (Fig. 25C). Abdominal ventrites covered with fine punctation; VI apically broadly rounded.
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</paragraph>
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<paragraph pageId="48" pageNumber="93">Male genitalia. Median lobe bilaterally symmetrical, in lateral aspect broadly curved, with very broad basal portion, with medial expansion along ventral margin, apically with dorsal margin nearly stright, dorsal margin broadly curved to pointed apex (Fig. 25D); in ventral aspect broad, lateral margins slightly expanded medially, apically with margins slightly convergent to broadly rounded apex (Fig. 25E). Lateral lobe very broad basally, medially curved, apex broad with lateral margins straight and convergent to broadly rounded apex which has small cluster of marginal setae (Fig. 25F).</paragraph>
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<paragraph pageId="48" pageNumber="93">Female genitalia. Not examined.</paragraph>
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<paragraph pageId="48" pageNumber="93">
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Sexual dimorphism. Male pro- and mesotarsi
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<normalizedToken originalValue="I–III">I-III</normalizedToken>
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more broadly expanded than female and ventrally with several large adhesive setae.
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</paragraph>
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<paragraph pageId="48" pageNumber="93">Variation. Very little variation was observed among the few specimens examined.</paragraph>
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</subSubSection>
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<subSubSection pageId="48" pageNumber="93" type="etymology">
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<paragraph pageId="48" pageNumber="93">Etymology.</paragraph>
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<paragraph pageId="48" pageNumber="93">This species is named morsus, Latin for "little bit," for the small size of specimens.</paragraph>
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</subSubSection>
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<subSubSection pageId="48" pageNumber="93" type="distribution">
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<paragraph pageId="48" pageNumber="93">Distribution.</paragraph>
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<paragraph pageId="48" pageNumber="93">This species is found only in Amazonas, Venezuela (Fig. 50).</paragraph>
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</subSubSection>
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<subSubSection pageId="48" pageNumber="93" type="habitat">
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<paragraph pageId="48" pageNumber="93">Habitat.</paragraph>
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<paragraph pageId="48" pageNumber="93">Nearly all the known specimens were collected at black light.</paragraph>
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</subSubSection>
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<subSubSection pageId="48" pageNumber="93" type="discussion">
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<paragraph pageId="48" pageNumber="93">Discussion.</paragraph>
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<paragraph pageId="48" pageNumber="93">
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This extremely small
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrodessus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodessus" order="Coleoptera" pageId="48" pageNumber="93" phylum="Arthropoda" rank="genus">Hydrodessus</taxonomicName>
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has only weakly developed lateral elytral carina and metaventrite carinae. The prosternal process is also relatively narrow. Together, these make this species only poorly placed in
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrodessus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodessus" order="Coleoptera" pageId="48" pageNumber="93" phylum="Arthropoda" rank="genus">Hydrodessus</taxonomicName>
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, but the male lateral lobes have a single segment, and the overall body shape is consistent with the variation present in the genus. Even so, it is certainly possible this species does not belong in
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrodessus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodessus" order="Coleoptera" pageId="48" pageNumber="93" phylum="Arthropoda" rank="genus">Hydrodessus</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="48" pageNumber="93" type="specimens">
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<paragraph pageId="48" pageNumber="93">Specimens.</paragraph>
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<paragraph pageId="48" pageNumber="93">
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The holotype male is in MIZA labeled, "VENEZUELA,T.F.Amaz. Cerro de la Neblina Basecamp. 140 m.
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<geoCoordinate direction="north" orientation="latitude" precision="925" value="0.8333333">0°50'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-66.166664">66°10'W</geoCoordinate>
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7 February 1985/ At black light on bank of Rio Baria W. E. Steiner, collector/ HOLOTYPE
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrodessus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrodessus morsus" order="Coleoptera" pageId="48" pageNumber="93" phylum="Arthropoda" rank="species" species="morsus">Hydrodessus morsus</taxonomicName>
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Miller, 2016 [red line with black line border]."
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</paragraph>
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<paragraph pageId="48" pageNumber="93">
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Paratypes, 5 total. Venezuela, Amazonas, Cerro de la Neblina, basecamp,
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<geoCoordinate direction="north" orientation="latitude" precision="55" value="0.833">0.833°N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="55" value="-66.167">66.167°W</geoCoordinate>
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, 7 Feb 1985, black light on bank of Rio Baria, 140m, W.E. Steiner (4, MIZA, USNM); Amazonas, San Fernando de Atabapo, El Pozo,
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<geoCoordinate direction="north" orientation="latitude" precision="55" value="4.024">4.024°N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="55" value="-67.684">67.684°W</geoCoordinate>
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, 8 Apr 1988, M. Aleman (1, USNM).
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |