208 lines
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208 lines
17 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.647.11231" ID-GBIF-Dataset="93ae96fa-94e7-4803-b4f8-1d8d0ea7bf9d" ID-PMC="PMC5345354" ID-Pensoft-Pub="1313-2970-647-137" ID-PubMed="28325968" ID-ZBK="3ED32CCA1B02415281416900E40D9445" ModsDocAuthor="" ModsDocDate="2017" ModsDocID="1313-2970-647-137" ModsDocOrigin="ZooKeys 647" ModsDocTitle="A new genus and two new species of Southeast Asian Bidessini as well as new synonyms for Oceanian species (Coleoptera, Dytiscidae)" checkinTime="1485806247670" checkinUser="pensoft" docAuthor="Balke, Michael, Bergsten, Johannes, Wang, Liang-Jong & Hendrich, Lars" docDate="2017" docId="5213981FBA1C1D8969D4655B345B9F04" docLanguage="en" docName="ZooKeys 647: 137-151" docOrigin="ZooKeys 647" docSource="http://dx.doi.org/10.3897/zookeys.647.11231" docTitle="Leiodytes kualalipis Balke, Wang, Bergsten & Hendrich, sp. n." docType="treatment" docUuid="3F824AE1-26C9-4E15-AB50-5974F10ED08A" docUuidSource="ZooBank" docVersion="5" lastPageNumber="142" masterDocId="FFE6FFAC5630CF49FF9D533AA956E660" masterDocTitle="A new genus and two new species of Southeast Asian Bidessini as well as new synonyms for Oceanian species (Coleoptera, Dytiscidae)" masterLastPageNumber="151" masterPageNumber="137" pageNumber="140" updateTime="1668163915667" 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>A new genus and two new species of Southeast Asian Bidessini as well as new synonyms for Oceanian species (Coleoptera, Dytiscidae)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Balke, Michael</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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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:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Wang, Liang-Jong</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>Hendrich, Lars</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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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>2017</mods:date>
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<mods:detail type="volume">
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<mods:number>647</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>137</mods:start>
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<mods:end>151</mods:end>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.647.11231</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.647.11231</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-647-137</mods:identifier>
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<mods:identifier type="ZBK">3ED32CCA1B02415281416900E40D9445</mods:identifier>
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<mods:identifier type="ZooBank">3ED32CCA1B02415281416900E40D9445</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="127899002" LSID="urn:lsid:zoobank.org:act:3F824AE1-26C9-4E15-AB50-5974F10ED08A" httpUri="http://treatment.plazi.org/id/5213981FBA1C1D8969D4655B345B9F04" lastPageId="5" lastPageNumber="142" pageId="3" pageNumber="140">
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<subSubSection pageId="3" pageNumber="140" type="nomenclature">
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<paragraph pageId="3" pageNumber="140">
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<taxonomicName LSID="http://zoobank.org/3F824AE1-26C9-4E15-AB50-5974F10ED08A" authority="Balke, Wang, Bergsten & Hendrich" class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="3" pageNumber="140" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis Balke, Wang, Bergsten & Hendrich</taxonomicName>
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<taxonomicNameLabel pageId="3" pageNumber="140">sp. n.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="140" type="holotype">
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<paragraph pageId="3" pageNumber="140">Holotype.</paragraph>
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<paragraph pageId="3" pageNumber="140">Male (ZSM). "Malaysia, Pahang, Kuala Lipis, old rubber plantation, iv.1997, Balke & Hendrich". Paratypes, 2 males (CSR, ZSM), 1 female (CSR) "S Vietnam (Cat Tien), 120 km NNE Ho Chi Minh, Cat Tien NP, 3.-15.07.1995, A. Napolov leg."; 2 males (CWT) "Vietnam, Nam Cat Tien, 200 m, 17-25-VI-1995, leg. Malicky"; 3 males, 2 females (CWT, NHMW, TFRI). "Vietnam, Dong NAI, Nam Cat Tien NP, 120 m, 18-IX-1998, leg. L. J. Wang".</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="140" type="type locality">
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<paragraph pageId="3" pageNumber="140">Type locality.</paragraph>
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<paragraph pageId="3" pageNumber="140">
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The type locality was around
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="4.200104">4.200104°N</geoCoordinate>
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="102.06157">102.061570°E</geoCoordinate>
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, altitude 100m. The entire region is now heavily transformed into oil palm plantations. The paratype locality was in Nam Cat Tien National Park, as a rough reference we obtained a position at the forest border
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="11.422096">11.422096°N</geoCoordinate>
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="107.42758">107.427578°E</geoCoordinate>
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.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="4" lastPageNumber="141" pageId="3" pageNumber="140" type="description">
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<paragraph pageId="3" pageNumber="140">Description.</paragraph>
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<paragraph pageId="3" pageNumber="140">
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Habitus elongate oval. Measurements: TL = 2.7 mm; TL-H = 2.4 mm; MW = 1.3 mm; elytra 4.2
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<normalizedToken originalValue="×">x</normalizedToken>
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longer than pronotum.
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</paragraph>
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<paragraph pageId="3" pageNumber="140">Colouration. Beetle dark yellow with few darker basal pronotal markings and darker pattern on elytra (Fig. 3).</paragraph>
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<caption pageId="3" pageNumber="140">
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<paragraph pageId="3" pageNumber="140">
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Figure 3.
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="3" pageNumber="140" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis</taxonomicName>
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sp. n., holotype, habitus (A), head, pronotum and base of elytra (B).
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</paragraph>
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</caption>
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<paragraph pageId="3" pageNumber="140">
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Surface sculpture. Head with distinct microreticulation posterior of occipital line; faint to extremely faint microreticulation along eyes and clypeus, frons without microreticulation and thus shiny / polished but with few setiferous punctures. Pronotum and elytron without microreticulation but with dense, coarse setiferous punctation. Ventral surfaces mostly polished, metaventrite, metacoxa and ventrites 1-3 with large punctures bearing short setae, distance between punctures approximately the diameter of a single puncture (similar to
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes vietnamensis" order="Coleoptera" pageId="3" pageNumber="140" phylum="Arthropoda" rank="species" species="vietnamensis">Leiodytes vietnamensis</taxonomicName>
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Wang,
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<normalizedToken originalValue="Satô">Sato</normalizedToken>
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& Yang, 1998, p. 165, Fig. 6A in their work).
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</paragraph>
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<paragraph lastPageId="4" lastPageNumber="141" pageId="3" pageNumber="140">
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Structures. Head with faint occipital line and depressed before clypeus leading to the impression that the clypeus is broadly beaded (Figs 3B, 4). Pronotum with faint lateral bead and distinct basal striae, the latter are strongly directed inwards (Figs 3B, 4). Elytron with basal striae but without sutural lines. Basal epipleural transverse carina
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<pageBreakToken pageId="4" pageNumber="141" start="start">absent</pageBreakToken>
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. Flight wings apparently fully developed (not dissected but seen from opening caused by previous removal of the last three ventrites). Pro- and mesotarsus not conspicuously dilated laterally.
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</paragraph>
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<caption pageId="4" pageNumber="141">
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<paragraph pageId="4" pageNumber="141">
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Figure 4.
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis</taxonomicName>
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sp. n.: male paratype, SEM of head, pronotum and base of elytra.
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</paragraph>
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</caption>
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<paragraph pageId="4" pageNumber="141">
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Male. Median lobe of aedeagus in lateral view thin and pointed apically, apical portion spatulate in ventral view (Figs 7A, B); lateral lobes (parameres) of two parts and distally broad, with broad
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<normalizedToken originalValue="“nose”">"nose"</normalizedToken>
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or broadly twisted (Fig. 7C).
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</paragraph>
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<paragraph pageId="4" pageNumber="141">Female. Similar to male, but surface dull due to presence of strong microreticulation dorsally and ventrally (Figs 5, 6).</paragraph>
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<caption pageId="4" pageNumber="141">
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<paragraph pageId="4" pageNumber="141">
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Figure 5.
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis</taxonomicName>
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sp. n.: female paratype, SEM of microreticulation on metasternum.
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</paragraph>
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</caption>
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<caption pageId="4" pageNumber="141">
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<paragraph pageId="4" pageNumber="141">
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Figure 6.
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis</taxonomicName>
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sp. n.: female paratype, SEM of last ventrite with deep suture apically.
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</paragraph>
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</caption>
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<caption pageId="4" pageNumber="141">
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<paragraph pageId="4" pageNumber="141">
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Figure 7.
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis</taxonomicName>
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sp. n., median lobe of aedeagus, ventral view (A), lateral view (B), paramere, lateral view (C).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="141" type="diagnosis">
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<paragraph pageId="4" pageNumber="141">Diagnosis.</paragraph>
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<paragraph pageId="4" pageNumber="141">
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This is the largest species of
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes" order="Coleoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="genus">Leiodytes</taxonomicName>
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and well characterised by its size as the other species in the region are distinctly smaller (below 2.2 mm or even below 2 mm long, see e.g.
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<bibRefCitation author="Regimbart, M" journalOrPublisher="Annales de la Societe Entomologique de France" pageId="10" pageNumber="147" pagination="186 - 367" title="Revision des Dytiscidae de la region Indo-Sino-Malaise." volume="68" year="1899">
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<normalizedToken originalValue="Régimbart">Regimbart</normalizedToken>
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1899
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</bibRefCitation>
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;
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<bibRefCitation author="Wang, LJ" journalOrPublisher="Japanese Journal of Systematic Entomology" pageId="10" pageNumber="147" pagination="161 - 171" title="Note on the genus Leiodytes Guignot (Coleoptera, Dytiscidae) with three new species from Taiwan, Thailand and Vietnam." volume="4" year="1998">Wang et al. 1998</bibRefCitation>
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). Besides the larger size, this new species has a unique feature: the last ventrite has a deep suture apically (Fig. 6). This might be an autapomorphy for the new species.
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</paragraph>
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<paragraph pageId="4" pageNumber="141">
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This is, to our knowledge, the second species reported from the Malayan Peninsula,
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes nicobaricus" order="Coleoptera" pageId="4" pageNumber="141" phylum="Arthropoda" rank="species" species="nicobaricus">Leiodytes nicobaricus</taxonomicName>
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(Redtenbacher, 1867) being the other one (
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<bibRefCitation pageId="4" pageNumber="141">Balke et al. 2004</bibRefCitation>
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;
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<bibRefCitation author="Hendrich, L" journalOrPublisher="The Raffles Bulletin of Zoology" pageId="9" pageNumber="146" pagination="97 - 141" title="Aquatic Coleoptera of Singapore - Species Richness, Ecology and Conservation." volume="52" year="2004">Hendrich et al. 2004</bibRefCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="141" type="etymology">
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<paragraph pageId="4" pageNumber="141">Etymology.</paragraph>
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<paragraph pageId="4" pageNumber="141">Named after the type locality, Kuala Lipis Town. The species name is a noun in apposition.</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="141" type="distribution">
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<paragraph pageId="4" pageNumber="141">Distribution.</paragraph>
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<paragraph pageId="4" pageNumber="141">A species with a wide geographic range, known from the type locality in West Malaysia as well as from Southern Vietnam. The distance between these two localities is roughly 1,000 km measured as a straight line across the Gulf of Thailand.</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="142" type="habitat">
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<paragraph pageId="5" pageNumber="142">
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<pageBreakToken pageId="5" pageNumber="142" start="start">Habitat</pageBreakToken>
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.
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</paragraph>
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<paragraph pageId="5" pageNumber="142">
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The holotype was collected in shallow water, among dense layers of rotten leaves, in a shaded forest pool situated in an old rubber plantation overgrown by secondary forest (Fig. 8). The species was associated with the
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<taxonomicName family="Dytiscidae" lsidName="" pageId="5" pageNumber="142" rank="family">Dytiscidae</taxonomicName>
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:
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Copelatus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Copelatus" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="genus">Copelatus</taxonomicName>
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sp.,
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydaticus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydaticus pacificus" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="subspecies" species="pacificus" subspecies="pacificus">Hydaticus pacificus pacificus</taxonomicName>
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<normalizedToken originalValue="Aubé">Aube</normalizedToken>
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, 1838 and
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hyphydrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hyphydrus birmanicus" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="birmanicus">Hyphydrus birmanicus</taxonomicName>
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<normalizedToken originalValue="Régimbart">Regimbart</normalizedToken>
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, 1888.
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</paragraph>
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<caption pageId="5" pageNumber="142">
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<paragraph pageId="5" pageNumber="142">
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Figure 8. Habitat of
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes kualalipis" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="kualalipis">Leiodytes kualalipis</taxonomicName>
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sp. n. near Kuala Lipis, West Malaysia. Drawing of beetle by D. Paramonov (Riga).
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</paragraph>
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</caption>
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<paragraph pageId="5" pageNumber="142">
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In Vietnam, the species was collected in shallow water made by jeep on a path. Syntopically occurring dytiscid species included
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Leiodytes" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leiodytes nicobaricus" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="nicobaricus">Leiodytes nicobaricus</taxonomicName>
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(Redtenbacher, 1867),
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Hydroglyphus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydroglyphus orientalis" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="orientalis">Hydroglyphus orientalis</taxonomicName>
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(Clark, 1863) and
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<taxonomicName class="Insecta" family="Dytiscidae" genus="Sandracottus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Sandracottus maculatus" order="Coleoptera" pageId="5" pageNumber="142" phylum="Arthropoda" rank="species" species="maculatus">Sandracottus maculatus</taxonomicName>
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(Wehncke, 1876).
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</paragraph>
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</subSubSection>
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</treatment>
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</document>
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