166 lines
15 KiB
XML
166 lines
15 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.632.10483" ID-GBIF-Dataset="7562b1b3-f243-4f1a-a41a-ffee220fab30" ID-PMC="PMC5126545" ID-Pensoft-Pub="1313-2970-632-57" ID-PubMed="27920604" ID-ZBK="0F28B33D1F614113A4BF707A420C554D" ModsDocAuthor="" ModsDocDate="2016" ModsDocID="1313-2970-632-57" ModsDocOrigin="ZooKeys 632" ModsDocTitle="Two new species of the megadiverse lentic diving-beetle genus Hydrovatus (Coleoptera, Dytiscidae) described from NE Thailand" checkinTime="1479361910016" checkinUser="pensoft" docAuthor="Bistroem, Olof & Bergsten, Johannes" docDate="2016" docId="DEF74BF71E9CA65C0D772F0823F5BF17" docLanguage="en" docName="ZooKeys 632: 57-66" docOrigin="ZooKeys 632" docSource="http://dx.doi.org/10.3897/zookeys.632.10483" docTitle="Hydrovatus diversipunctatus Bistroem & Bergsten, 2016, sp. n." docType="treatment" docUuid="112B3346-2DF9-49A3-8A7E-8CF204324ED6" docUuidSource="ZooBank" docVersion="5" lastPageNumber="61" masterDocId="9865E9667D46FFA7FF8E337C5277404C" masterDocTitle="Two new species of the megadiverse lentic diving-beetle genus Hydrovatus (Coleoptera, Dytiscidae) described from NE Thailand" masterLastPageNumber="66" masterPageNumber="57" pageNumber="59" updateTime="1668163707474" 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>Two new species of the megadiverse lentic diving-beetle genus Hydrovatus (Coleoptera, Dytiscidae) described from NE Thailand</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>Bistroem, Olof</mods:namePart>
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</mods:name>
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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>Bergsten, Johannes</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>632</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>57</mods:start>
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<mods:end>66</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.632.10483</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.632.10483</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-632-57</mods:identifier>
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<mods:identifier type="ZBK">0F28B33D1F614113A4BF707A420C554D</mods:identifier>
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<mods:identifier type="ZooBank">0F28B33D1F614113A4BF707A420C554D</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="127876128" LSID="urn:lsid:zoobank.org:act:112B3346-2DF9-49A3-8A7E-8CF204324ED6" httpUri="http://treatment.plazi.org/id/DEF74BF71E9CA65C0D772F0823F5BF17" lastPageId="4" lastPageNumber="61" pageId="2" pageNumber="59">
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<subSubSection pageId="2" pageNumber="59" type="multiple">
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<paragraph pageId="2" pageNumber="59">Taxon classification Animalia Coleoptera Dytiscidae</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="59" type="nomenclature">
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<paragraph pageId="2" pageNumber="59">
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<taxonomicName LSID="http://zoobank.org/112B3346-2DF9-49A3-8A7E-8CF204324ED6" class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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<taxonomicNameLabel pageId="2" pageNumber="59">sp. n.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="59" type="type locality">
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<paragraph pageId="2" pageNumber="59">Type locality.</paragraph>
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<paragraph pageId="2" pageNumber="59">Thailand: Khon-Kaen [city and province in the region of Isan, NE Thailand].</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="59" type="type material">
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<paragraph pageId="2" pageNumber="59">Type material</paragraph>
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<paragraph pageId="2" pageNumber="59">
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8 exs. (1 male, 7 females). Holotype, male: "Nordost-Thailand Khon-Kaen ad lucem / Dr. Sastri Saowakontha leg. 28.4.1980" (HNHM). - Paratypes: Same data as holotype (1 ex. FMNH); same data as holotype but
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<normalizedToken originalValue="“25.IV.1980”">"25.IV.1980"</normalizedToken>
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(1 ex. HNHM, 1 ex. NHRS); same data as holotype but
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<normalizedToken originalValue="“22.IV.1980”">"22.IV.1980"</normalizedToken>
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(2 exs. HNHM, 1 ex. FMNH); same data as holotype but
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<normalizedToken originalValue="“20.5.1980”">"20.5.1980"</normalizedToken>
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(1 ex. HNHM).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="59" type="diagnosis">
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<paragraph pageId="2" pageNumber="59">Diagnosis.</paragraph>
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<paragraph pageId="2" pageNumber="59">
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The new species is undoubtedly closest to
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus subrotundatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="subrotundatus">Hydrovatus subrotundatus</taxonomicName>
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Motschulsky. These two species share the characteristics of having the lateral elytral margin clearly visible from above (Fig. 1
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<normalizedToken originalValue="a–b">a-b</normalizedToken>
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, compare with Fig. 1
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<normalizedToken originalValue="c–d">c-d</normalizedToken>
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). The two species are distinguished by clear difference in body size and shape;
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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is larger and less rounded-globular than
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus subrotundatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="subrotundatus">Hydrovatus subrotundatus</taxonomicName>
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. Moreover,
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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deviates by having much coarser pronotal punctures in comparison with general punctation of elytra (diameter of pronotal punctures about 4
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<normalizedToken originalValue="×">x</normalizedToken>
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larger than general punctures of elytra). Additionally, head between eyes has complete frontal margin in
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus subrotundatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="subrotundatus">Hydrovatus subrotundatus</taxonomicName>
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, while frontal margin in
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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fades away close to eyes. Shape of male genitalia is quite similar in the two species. Penis is, however, slightly broader in
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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, while parameres seem to be a little more slender, compared with corresponding structures in male genitalia of
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus subrotundatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="subrotundatus">Hydrovatus subrotundatus</taxonomicName>
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.
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</paragraph>
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<caption pageId="2" pageNumber="59">
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<paragraph pageId="2" pageNumber="59">
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Figure 1. Dorsal habitus of
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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sp. n. (a),
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus subrotundatus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="subrotundatus">Hydrovatus subrotundatus</taxonomicName>
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(b),
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus globosus" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="globosus">Hydrovatus globosus</taxonomicName>
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sp. n. (c) and
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus rufoniger" order="Coleoptera" pageId="2" pageNumber="59" phylum="Arthropoda" rank="subspecies" species="rufoniger" subspecies="rufoniger">Hydrovatus rufoniger rufoniger</taxonomicName>
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(d). Scale bar 3 mm.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection lastPageId="4" lastPageNumber="61" pageId="2" pageNumber="59" type="description">
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<paragraph pageId="2" pageNumber="59">Description.</paragraph>
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<paragraph pageId="2" pageNumber="59">Body: Almost entirely blackish ferrugineous, with no distinct color pattern. Body-shape not globular but slightly elongated. Broadest posterior to humeral region and from there posteriorly slightly narrowed until abruptly curved towards apex of elytra. Lateral margin between epipleura and elytra pronounced and clearly discernible from above (Fig. 1a). Length of body 3.1-3.3 mm, width 2.0-2.1 mm.</paragraph>
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<paragraph lastPageId="3" lastPageNumber="60" pageId="2" pageNumber="59">
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Head: Blackish ferrugineous; near frontal margin head slightly paler, dark ferrugineous. Very finely and sparsely punctate. At eyes and in rather shallow, frontal depressions with some fine punctures. Rather shiny, although finely microsculptured. Reticulation clearly discernible except on minor tubercles frontally close to eyes where reticulation is obliterated. Frontal outline of head rounded, medially slightly straightened. Frontal
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<pageBreakToken pageId="3" pageNumber="60" start="start">margin</pageBreakToken>
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fades away on minor tubercles close to eyes. Antenna pale ferrugineous, slender and with no modifications.
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</paragraph>
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<paragraph pageId="3" pageNumber="60">Pronotum: Blackish ferrugineous, laterally with vague dark ferrugineous areas. Densely and distinctly punctate; laterally punctures become sparse and slightly finer. Rather shiny, although distinctly microsculptured; meshes clearly discernible. Sides of pronotum slightly rounded to almost straight; anteriorly distinctly curved inwards.</paragraph>
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<paragraph pageId="4" pageNumber="61">
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<pageBreakToken pageId="4" pageNumber="61" start="start">Elytra</pageBreakToken>
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: Finely and sparsely punctate. Rows of punctures indistinct and weakly developed except from discal row, which basally is quite distinct. Rather shiny, although very finely microsculptured; reticulation weak but extensively still discernible. Narrowly, close to epipleura reticulation in part obliterated. Epipleura dark ferrugineous; finely punctate frontally at inner margin.
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</paragraph>
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<paragraph pageId="4" pageNumber="61">Ventral aspect: Dark ferrugineous, except abdomen, apically slightly paler, ferrugineous. Almost impunctate, except for metacoxal plates and metathorax, which in part are covered with fine to rather fine punctures. Rather shiny with fragments of microsculpture, except abdomen which is entirely microsculptured. Prosternal process laterally with fine margin; medial surface almost flat and punctured. No stridulatory apparatus on metacoxal plates.</paragraph>
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<paragraph pageId="4" pageNumber="61">Legs: Pale ferrugineous to ferrugineous. Pro- and mesotarsus slightly enlarged. Claws simple.</paragraph>
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<paragraph pageId="4" pageNumber="61">
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Male genitalia as in Fig. 2
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<normalizedToken originalValue="a–c">a-c</normalizedToken>
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.
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</paragraph>
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<caption pageId="4" pageNumber="61">
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<paragraph pageId="4" pageNumber="61">
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Figure 2. Male genitalia of
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus diversipunctatus" order="Coleoptera" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="diversipunctatus">Hydrovatus diversipunctatus</taxonomicName>
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sp. n. (
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<normalizedToken originalValue="a–c">a-c</normalizedToken>
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) and
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydrovatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrovatus globosus" order="Coleoptera" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="globosus">Hydrovatus globosus</taxonomicName>
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sp. n. (
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<normalizedToken originalValue="d–g">d-g</normalizedToken>
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). a, d penis, dorsal aspect b, f penis, lateral aspect c, g paramere e penis, frontal part from above. Scale bar in upper right corner 0.5 mm for
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<normalizedToken originalValue="a–d">a-d</normalizedToken>
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,
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<normalizedToken originalValue="f–g">f-g</normalizedToken>
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. Scale bar next to (e) 0.5 mm, applies to only e.
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</paragraph>
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</caption>
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<paragraph pageId="4" pageNumber="61">Female: Externally similar to male.</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="61" type="distribution">
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<paragraph pageId="4" pageNumber="61">Distribution.</paragraph>
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<paragraph pageId="4" pageNumber="61">Thailand.</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="61" type="collecting circumstances">
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<paragraph pageId="4" pageNumber="61">Collecting circumstances.</paragraph>
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<paragraph pageId="4" pageNumber="61">Type material collected at light.</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="61" type="etymology">
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<paragraph pageId="4" pageNumber="61">Etymology.</paragraph>
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<paragraph pageId="4" pageNumber="61">
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The species name
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<taxonomicName lsidName="diversipunctatus" pageId="4" pageNumber="61" rank="species" species="diversipunctatus">diversipunctatus</taxonomicName>
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refers to the large difference in size between general punctures of pronotum in comparison to those of elytra.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |