<document id="FDB797F080D57C7CDFBF2FF2695B2D3A" ID-CLB-Dataset="29846" ID-DOI="10.11646/zootaxa.4438.1.12" ID-GBIF-Dataset="21b9288c-7301-4b31-9fe1-6397eef9709f" ID-ISSN="1175-5326" ID-Zenodo-Dep="1294265" ID-ZooBank="5914EBFF-4C15-47B8-8866-50AD03D7E297" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1529536454450" checkinUser="plazi" docAuthor="Zhu, Bingyue, Ji, Lanzhu &amp; Bian, Dongju" docDate="2018" docId="03A0BB27FFA83F7CFF45FF0EFA3FFDEA" docLanguage="en" docName="zootaxa.4438.1.12.pdf.imf" docOrigin="Zootaxa 4438 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Pelthydrus sculpturatus" docType="key" docVersion="7" lastPageNumber="191" masterDocId="FF99C35FFFAA3F7EFFD2FF96FFA4FFA7" masterDocTitle="A new species and a new record of Pelthydrus Orchymont, 1919 from Yunnan, China (Coleoptera: Hydrophilidae: Hydrophilinae)" masterLastPageNumber="194" masterPageNumber="189" pageNumber="191" updateTime="1698550170269" updateUser="ExternalLinkService">
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<mods:title id="998DFE35C9A66245C6A1B0EE7F5FD601">A new species and a new record of Pelthydrus Orchymont, 1919 from Yunnan, China (Coleoptera: Hydrophilidae: Hydrophilinae)</mods:title>
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<mods:namePart id="AB53C4B18034F3EE349348CCD428E740">Zhu, Bingyue</mods:namePart>
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<mods:namePart id="F0B35C3F97B1B87506C3F38F62B8149E">Ji, Lanzhu</mods:namePart>
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<mods:namePart id="3509E19CF0BDE6776F598BCC065A296B">Bian, Dongju</mods:namePart>
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Key to species of the 
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<emphasis id="B97DD623FFA83F7CFE4EFF01FD1FFF16" bold="true" box="[412,699,151,177]" italics="true" pageId="2" pageNumber="191">Pelthydrus sculpturatus</emphasis>
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group
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1. Mentum smooth, shiny with a few independent deep punctures, lateral margins of pronotum straight 
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2
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- Mentum with dense punctures, lateral edges of pronotum curved along anterior half 
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5
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2. Posterior margin of pronotum slightly wider than anterior margin; apex of parameres rounded 
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3
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- Posterior margin of pronotum distinctly wider than anterior margin, apex of parameres oblique and truncated 
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4
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3. Median lobe shorter than parameres, whose apex slightly pointing towards midline 
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..................................... 
<taxonomicName id="4C0971B2FFA83F7CFB19FEB9FA31FEE2" ID-CoL="76FBS" box="[1227,1429,303,325]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="siamensis">Pelthydrus siamensis</taxonomicName>
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- Median lobe longer than parameres, and parameres gradually narrowed from base towards apices 
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..................................... 
<taxonomicName id="4C0971B2FFA83F7CFA81FEDBFA3FFEC5" ID-CoL="76FC6" box="[1363,1435,333,354]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="tongi">P. tongi</taxonomicName>
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4. Phallobase longer than parameres; gonopore situated at subapical portion 
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................................................................ 
<taxonomicName id="4C0971B2FFA83F7CFADFFEFCFA3FFED8" ID-CoL="76FC3" box="[1293,1435,361,383]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="sculpturatus">P. sculpturatus</taxonomicName>
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- Phallobase shorter than parameres; gonopore located in the apical position 
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...................................................... 
<taxonomicName id="4C0971B2FFA83F7CFB0AFE1EFAECFE3A" ID-CoL="76FBQ" authority="Zhu &amp; Ji &amp; Bian, 2018" authorityName="Zhu &amp; Ji &amp; Bian" authorityYear="2018" box="[1240,1352,391,413]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="ruiliensis" status="sp. nov.">P. ruiliensis</taxonomicName>
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5. Smaller sized species (BL: 2.00– 
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); apices of elytra narrowly rounded, not meeting at midline 
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...................... 
<taxonomicName id="4C0971B2FFA83F7CFAF6FE33FA38FE1D" ID-CoL="76FBF" box="[1316,1436,420,442]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="kapitensis">P. kapitensis</taxonomicName>
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- Larger sized species (BL: 
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); apices of elytra continuously rounded, meeting at midline 
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6
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6. Ground punctures evenly distributed on the pronotum, microreticulation visible; parameres slightly exceeding median lobe 
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........ ............................................................................................................................................................................................... 
<taxonomicName id="4C0971B2FFA83F7CFA97FE6BFA31FDB5" ID-CoL="76FBM" box="[1349,1429,508,530]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="ovalis">P. ovalis</taxonomicName>
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- Ground punctures more densely distributed on sides of pronotum, microreticulation almost invisible; median lobe slightly exceeding parameres 
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............................................................................................................................................................ 
<taxonomicName id="4C0971B2FFA83F7CFAEFFDAEFA3FFDEA" ID-CoL="76FCY" box="[1341,1435,568,589]" class="Insecta" family="Hydrophilidae" genus="Pelthydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="iniquus">P. iniquus</taxonomicName>
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