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228 lines
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<document id="D32EFC8891D7A941480DDB7DC2ACEF5D" ID-DOI="10.1111/zoj.12114" ID-ISSN="0024-4082" ID-Zenodo-Dep="10273948" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630109995688" checkinUser="marcus" docAuthor="Fikáček, Martin, Prokin, Alexander, Yan, Evgeny, Yue, Yanli, Wang, Bo, Ren, Dong & Beattie, Robert" docDate="2014" docId="03C287ACFF8CD666FC34B9A7416B9B81" docLanguage="en" docName="zoj12114.pdf" docOrigin="Zoological Journal of the Linnean Society 170 (4)" docSource="http://doi.wiley.com/10.1111/zoj.12114" docStyle="DocumentStyle:FBF0BF18BB2B256F1F8008F27D80BF37.3:ZoolJLinnSoc.2010-2016.journal_article" docStyleId="FBF0BF18BB2B256F1F8008F27D80BF37" docStyleName="ZoolJLinnSoc.2010-2016.journal_article" docStyleVersion="3" docTitle="Hydroyixia Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie 2014, GEN. NOV." docType="treatment" docVersion="3" lastPageNumber="722" masterDocId="FFFBFFD4FF80D676FFD0B961454A9D19" masterDocTitle="Modern hydrophilid clades present and widespread in the Late Jurassic and Early Cretaceous (Coleoptera: Hydrophiloidea: Hydrophilidae)" masterLastPageNumber="734" masterPageNumber="710" pageNumber="722" updateTime="1701826641646" updateUser="ExternalLinkService">
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<mods:title id="F81FCDB3643FE59FE49276FF1D96E7D1">Modern hydrophilid clades present and widespread in the Late Jurassic and Early Cretaceous (Coleoptera: Hydrophiloidea: Hydrophilidae)</mods:title>
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<mods:namePart id="060B80AD7BD8A097A3DF458D3FBC1CBA">Fikáček, Martin</mods:namePart>
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<mods:namePart id="709234E6CF0F5A2FC34A494CDD966DE4">Prokin, Alexander</mods:namePart>
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<mods:namePart id="F5DE09073AB0E189B0FAC8D305C2D6EC">Yan, Evgeny</mods:namePart>
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<mods:name id="D151A60AE792F56F7DCCC1E62B0E149F" type="personal">
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<mods:namePart id="98F11F43C1C6829D8B7F410CC29D57B5">Yue, Yanli</mods:namePart>
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<mods:namePart id="752777B661F0192A6B734B2CA1AF0BE9">Wang, Bo</mods:namePart>
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<mods:namePart id="7AB7FFBE78ADE09B262007B1DC21CF89">Ren, Dong</mods:namePart>
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<mods:namePart id="9434565539B880F409208E58A031F074">Beattie, Robert</mods:namePart>
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<mods:typeOfResource id="791A35F49F74339620936F8D30255F84">text</mods:typeOfResource>
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<mods:title id="B512C568B64DD8B90EFBE31AFB9D6CF2">Zoological Journal of the Linnean Society</mods:title>
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</mods:titleInfo>
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<mods:part id="CD3B996C92A87B565EEDC5D95667ACAE">
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<mods:date id="4BB9B79D0B77D838B6202CB5B9948ABE">2014</mods:date>
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<mods:detail id="551E52C01FC89589DC54C91F20666CE1" type="pubDate">
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<mods:number id="5127F038F58903DB0CD0F024E71D3F3E">2014-04-30</mods:number>
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<mods:number id="995BAA02623894FB5ACD729A48EF7ABF">170</mods:number>
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<mods:detail id="A6C9BE13D365BA80C6DB6800E7F33F73" type="issue">
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<mods:number id="BD2AB6AB9DAF1F9F58F404D3F2CF3612">4</mods:number>
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<mods:start id="0CFDF5C978C869EB140FF7508EBC0A0A">710</mods:start>
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<mods:end id="2E2DB1F22C6CAE24D06841D929A33774">734</mods:end>
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<mods:url id="2424A5743F0813B92E3AE9AE3709F9E2">http://doi.wiley.com/10.1111/zoj.12114</mods:url>
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<mods:classification id="5A4EC310E1D77A16A62971FDD4BCC787">journal article</mods:classification>
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<mods:identifier id="0EC9895B18EFE9E85D85421E026F1F8C" type="DOI">10.1111/zoj.12114</mods:identifier>
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<mods:identifier id="5E5B8C89CC9D6753F24B195511F9E0DA" type="ISSN">0024-4082</mods:identifier>
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<mods:identifier id="7BB17D5E52157A713E961F044608DBE8" type="Zenodo-Dep">10273948</mods:identifier>
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<treatment id="03C287ACFF8CD666FC34B9A7416B9B81" LSID="urn:lsid:plazi:treatment:03C287ACFF8CD666FC34B9A7416B9B81" httpUri="http://treatment.plazi.org/id/03C287ACFF8CD666FC34B9A7416B9B81" lastPageId="16" lastPageNumber="722" pageId="12" pageNumber="722">
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<subSubSection id="C3716531FF8CD67AFC34B9A741BD9DC2" box="[996,1271,198,219]" pageId="12" pageNumber="722" type="nomenclature">
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<paragraph id="8BD436BAFF8CD67AFC34B9A741BD9DC2" blockId="12.[996,1271,198,219]" box="[996,1271,198,219]" pageId="12" pageNumber="722">
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<heading id="D09C81D6FF8CD67AFC34B9A741BD9DC2" box="[996,1271,198,219]" centered="true" fontSize="9" level="2" pageId="12" pageNumber="722" reason="4">
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<taxonomicName id="4C6B4D39FF8CD67AFC34B9A7413D9DC3" ID-CoL="8XLWY" authority="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie, 2014" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[996,1143,198,219]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="genus" status="gen. nov.">HYDROYIXIA</taxonomicName>
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<emphasis id="B91FEAA8FF8CD67AFB51B9A841BD9DC2" bold="true" box="[1153,1271,198,219]" pageId="12" pageNumber="722">
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<taxonomicNameLabel id="A22C57D3FF8CD67AFB51B9A841BD9DC2" box="[1153,1271,198,219]" pageId="12" pageNumber="722" rank="genus">GEN. NOV.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C3716531FF8CD666FCEAB98C416B9B81" lastPageId="16" lastPageNumber="726" pageId="12" pageNumber="722" type="materials_examined">
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<paragraph id="8BD436BAFF8CD67AFCEAB98C468C9C38" blockId="12.[826,1441,236,289]" pageId="12" pageNumber="722">
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<emphasis id="B91FEAA8FF8CD67AFCEAB98C41F19C18" box="[826,1211,236,258]" italics="true" pageId="12" pageNumber="722">
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<typeStatus id="54D08818FF8CD67AFCEAB98C46249C1B" box="[826,878,237,258]" pageId="12" pageNumber="722">Type</typeStatus>
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species:
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<taxonomicName id="4C6B4D39FF8CD67AFC03B98D41F19C18" authority="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie, 2014" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[979,1211,236,257]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="species" species="elongata" status="sp. nov.">Hydroyixia elongata</taxonomicName>
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</emphasis>
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<taxonomicNameLabel id="A22C57D3FF8CD67AFB13B98C40569C1B" box="[1219,1308,237,258]" pageId="12" pageNumber="722" rank="species">sp. nov.</taxonomicNameLabel>
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, by present designation.
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</paragraph>
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<paragraph id="8BD436BAFF8CD67AFCEAB82C41D69C7B" blockId="12.[826,1180,333,355]" box="[826,1180,333,355]" pageId="12" pageNumber="722">
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<emphasis id="B91FEAA8FF8CD67AFCEAB82C46899C7B" box="[826,963,333,354]" italics="true" pageId="12" pageNumber="722">Time range:</emphasis>
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Early Cretaceous.
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</paragraph>
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<paragraph id="8BD436BAFF8CD67AFCEAB8EE46ED9E76" blockId="12.[826,1441,398,879]" pageId="12" pageNumber="722">
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<emphasis id="B91FEAA8FF8CD67AFCEAB8EE46FB9CBD" box="[826,945,399,420]" italics="true" pageId="12" pageNumber="722">Diagnosis:</emphasis>
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Body medium-sized; labrum partly exposed in dorsal view (
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<figureCitation id="13502A3FFF8CD67AFB86B8CC41B89CDB" box="[1110,1266,429,451]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Figs 5A, D, F</figureCitation>
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,
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<figureCitation id="13502A3FFF8CD67AFAD1B8CC40549CDB" box="[1281,1310,429,450]" captionStart="Figure 7" captionStartId="15.[144,223,1704,1723]" captionTargetBox="[208,1360,195,1674]" captionTargetId="figure-0@15.[208,1360,195,1674]" captionTargetPageId="15" captionText="Figure 7. Hydrophilid fossils from Early Cretaceous Yixian Formation, China. Alegorius yixianus sp. nov.: holotype CNU 2009079, whole specimen (A), detail of meso- and metaventrite (B), detail of abdominal apex (C); paratype CNU 2009078, whole specimen (D), detail of mesoventrite (E). Hydroyixia elongata sp. nov.: paratype CNU 2009075, detail of head and pronotum (F), whole specimen (G); holotype CNU 2010005: whole beetle, piece and counterpiece (H, I), detail of head (J), detail of meso- and metaventrite (K), detail of abdominal apex (L). Hydroyixia latissima sp. nov.: holotype CNU 2009074, detail of abdominal apex (M), whole specimen in dry condition (N) and under alcohol (O). Abbreviations: apls, anapleural suture; abem, apical emargination of abdominal ventrite 5." figureDoi="http://doi.org/10.5281/zenodo.10273968" httpUri="https://zenodo.org/record/10273968/files/figure.png" pageId="12" pageNumber="722">7J</figureCitation>
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,
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<figureCitation id="13502A3FFF8CD67AFAFEB8CC40059CDA" box="[1326,1359,429,451]" captionStart="Figure 8" captionStartId="16.[164,243,909,928]" captionTargetBox="[172,1436,205,871]" captionTargetId="figure-117@16.[164,1444,197,879]" captionTargetPageId="16" captionText="Figure 8. Reconstructions of the clypeus shape and meso- and metathoracic morphology of the Early Cretaceous hydrophilid genera known in adult stage (three-dimensional structure of the mesoventrite not reconstructed). Alegorius gen. nov. (A, B); Cretoxenus gen. nov. (C, D); Hydroyixia gen. nov. (E, F). Head and thorax of the respective genus not to scale." figureDoi="http://doi.org/10.5281/zenodo.10273971" httpUri="https://zenodo.org/record/10273971/files/figure.png" pageId="12" pageNumber="722">8E</figureCitation>
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); anterior margin of clypeus deeply and widely excised mesally (
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<figureCitation id="13502A3FFF8CD67AFC76B88B410D9F19" box="[934,1095,490,512]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Figs 5A, D, F</figureCitation>
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,
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<figureCitation id="13502A3FFF8CD67AFB87B88A413E9F19" box="[1111,1140,491,512]" captionStart="Figure 7" captionStartId="15.[144,223,1704,1723]" captionTargetBox="[208,1360,195,1674]" captionTargetId="figure-0@15.[208,1360,195,1674]" captionTargetPageId="15" captionText="Figure 7. Hydrophilid fossils from Early Cretaceous Yixian Formation, China. Alegorius yixianus sp. nov.: holotype CNU 2009079, whole specimen (A), detail of meso- and metaventrite (B), detail of abdominal apex (C); paratype CNU 2009078, whole specimen (D), detail of mesoventrite (E). Hydroyixia elongata sp. nov.: paratype CNU 2009075, detail of head and pronotum (F), whole specimen (G); holotype CNU 2010005: whole beetle, piece and counterpiece (H, I), detail of head (J), detail of meso- and metaventrite (K), detail of abdominal apex (L). Hydroyixia latissima sp. nov.: holotype CNU 2009074, detail of abdominal apex (M), whole specimen in dry condition (N) and under alcohol (O). Abbreviations: apls, anapleural suture; abem, apical emargination of abdominal ventrite 5." figureDoi="http://doi.org/10.5281/zenodo.10273968" httpUri="https://zenodo.org/record/10273968/files/figure.png" pageId="12" pageNumber="722">7J</figureCitation>
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,
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<figureCitation id="13502A3FFF8CD67AFB55B88B41ED9F19" box="[1157,1191,490,512]" captionStart="Figure 8" captionStartId="16.[164,243,909,928]" captionTargetBox="[172,1436,205,871]" captionTargetId="figure-117@16.[164,1444,197,879]" captionTargetPageId="16" captionText="Figure 8. Reconstructions of the clypeus shape and meso- and metathoracic morphology of the Early Cretaceous hydrophilid genera known in adult stage (three-dimensional structure of the mesoventrite not reconstructed). Alegorius gen. nov. (A, B); Cretoxenus gen. nov. (C, D); Hydroyixia gen. nov. (E, F). Head and thorax of the respective genus not to scale." figureDoi="http://doi.org/10.5281/zenodo.10273971" httpUri="https://zenodo.org/record/10273971/files/figure.png" pageId="12" pageNumber="722">8E</figureCitation>
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); prosternum moderately long; scutellar shield small, triangular; anapleural sutures well developed, weakly curved, converging anteriad; mesoventrite very narrow anteriorly (
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<figureCitation id="13502A3FFF8CD67AFC58BB0446B39F63" box="[904,1017,612,635]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Figs 5B, I</figureCitation>
|
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|
|
,
|
|||
|
|
<figureCitation id="13502A3FFF8CD67AFBD6BB0441089F63" box="[1030,1090,613,634]" captionStart="Figure 7" captionStartId="15.[144,223,1704,1723]" captionTargetBox="[208,1360,195,1674]" captionTargetId="figure-0@15.[208,1360,195,1674]" captionTargetPageId="15" captionText="Figure 7. Hydrophilid fossils from Early Cretaceous Yixian Formation, China. Alegorius yixianus sp. nov.: holotype CNU 2009079, whole specimen (A), detail of meso- and metaventrite (B), detail of abdominal apex (C); paratype CNU 2009078, whole specimen (D), detail of mesoventrite (E). Hydroyixia elongata sp. nov.: paratype CNU 2009075, detail of head and pronotum (F), whole specimen (G); holotype CNU 2010005: whole beetle, piece and counterpiece (H, I), detail of head (J), detail of meso- and metaventrite (K), detail of abdominal apex (L). Hydroyixia latissima sp. nov.: holotype CNU 2009074, detail of abdominal apex (M), whole specimen in dry condition (N) and under alcohol (O). Abbreviations: apls, anapleural suture; abem, apical emargination of abdominal ventrite 5." figureDoi="http://doi.org/10.5281/zenodo.10273968" httpUri="https://zenodo.org/record/10273968/files/figure.png" pageId="12" pageNumber="722">7I, K</figureCitation>
|
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,
|
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|
<figureCitation id="13502A3FFF8CD67AFB9DBB0441269F62" box="[1101,1132,613,635]" captionStart="Figure 8" captionStartId="16.[164,243,909,928]" captionTargetBox="[172,1436,205,871]" captionTargetId="figure-117@16.[164,1444,197,879]" captionTargetPageId="16" captionText="Figure 8. Reconstructions of the clypeus shape and meso- and metathoracic morphology of the Early Cretaceous hydrophilid genera known in adult stage (three-dimensional structure of the mesoventrite not reconstructed). Alegorius gen. nov. (A, B); Cretoxenus gen. nov. (C, D); Hydroyixia gen. nov. (E, F). Head and thorax of the respective genus not to scale." figureDoi="http://doi.org/10.5281/zenodo.10273971" httpUri="https://zenodo.org/record/10273971/files/figure.png" pageId="12" pageNumber="722">8F</figureCitation>
|
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); mesocoxae very narrowly separated; abdomen with five ventrites; apical abdominal ventrite with shallow wide emargination (
|
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|
|
<figureCitation id="13502A3FFF8CD67AFCAEBBA141749FCF" box="[894,1086,704,726]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Figs 5B, F–G, I</figureCitation>
|
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,
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<figureCitation id="13502A3FFF8CD67AFB83BBA041D39FCF" box="[1107,1177,705,726]" captionStart="Figure 7" captionStartId="15.[144,223,1704,1723]" captionTargetBox="[208,1360,195,1674]" captionTargetId="figure-0@15.[208,1360,195,1674]" captionTargetPageId="15" captionText="Figure 7. Hydrophilid fossils from Early Cretaceous Yixian Formation, China. Alegorius yixianus sp. nov.: holotype CNU 2009079, whole specimen (A), detail of meso- and metaventrite (B), detail of abdominal apex (C); paratype CNU 2009078, whole specimen (D), detail of mesoventrite (E). Hydroyixia elongata sp. nov.: paratype CNU 2009075, detail of head and pronotum (F), whole specimen (G); holotype CNU 2010005: whole beetle, piece and counterpiece (H, I), detail of head (J), detail of meso- and metaventrite (K), detail of abdominal apex (L). Hydroyixia latissima sp. nov.: holotype CNU 2009074, detail of abdominal apex (M), whole specimen in dry condition (N) and under alcohol (O). Abbreviations: apls, anapleural suture; abem, apical emargination of abdominal ventrite 5." figureDoi="http://doi.org/10.5281/zenodo.10273968" httpUri="https://zenodo.org/record/10273968/files/figure.png" pageId="12" pageNumber="722">7L–M</figureCitation>
|
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); elytron with deeply impressed sutural stria (
|
|||
|
|
<figureCitation id="13502A3FFF8CD67AFBA3BBBE40749FED" box="[1139,1342,735,757]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Figs 5A, C, F, I</figureCitation>
|
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); elytra with series of punctures (
|
|||
|
|
<figureCitation id="13502A3FFF8CD67AFB5EBB9C407E9E0A" box="[1166,1332,765,787]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Figs 5C, F, I</figureCitation>
|
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|
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); elytral trichobothria very distinct (
|
|||
|
|
<figureCitation id="13502A3FFF8CD67AFBA9BA7D41879E2B" box="[1145,1229,796,818]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Fig. 5E</figureCitation>
|
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|
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); metathoracic leg with five tarsomeres; mesotarsomere 1 very short (
|
|||
|
|
<figureCitation id="13502A3FFF8CD67AFC92BA3846D09E76" box="[834,922,857,879]" captionStart="Figure 5" captionStartId="13.[144,223,1651,1670]" captionTargetBox="[144,1425,194,1621]" captionTargetId="figure-0@13.[144,1425,194,1621]" captionTargetPageId="13" captionText="Figure 5. Well-preserved specimens of Hydroyixia gen. nov., Yixian Formation, China. Hydroyixia elongata sp. nov.: holotype CNU 2010005, piece and counterpiece (A, B); paratype CNU 2009075, whole specimen (C), detail of head and pronotum (D); detail of elytral apices (E). Hydroyixia latissima sp. nov.: holotype, CNU 2009074, whole specimen (F), detail of abdominal apex (G); posterior leg of paratype CNU 2010014 (H); paratype CNU 2009107 (I). Abbreviations: abem, apical emargination of abdominal ventrite 5; aes3, metanepisternum; apls, anapleural sutures; cl, clypeus; fcs, frontoclypeal suture; gs, gular suture; lb, labrum; men, mentum; msv, mesoventrite; mtv, metaventrite; mttr1, metatarsomere 1; pros, prosternum; sstr, sutural stria; trich, trichobothrium." figureDoi="http://doi.org/10.5281/zenodo.10273962" httpUri="https://zenodo.org/record/10273962/files/figure.png" pageId="12" pageNumber="722">Fig. 5H</figureCitation>
|
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).
|
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|
|
</paragraph>
|
|||
|
|
<paragraph id="8BD436BAFF8CD67AFCEABAFA40DA9914" blockId="12.[826,1441,923,1037]" pageId="12" pageNumber="722">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFCEABAFA46F29EA9" box="[826,952,923,944]" italics="true" pageId="12" pageNumber="722">Etymology:</emphasis>
|
|||
|
|
The generic name consists of the prefix
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFCEABADB46369ED6" box="[826,892,954,975]" italics="true" pageId="12" pageNumber="722">hydro</emphasis>
|
|||
|
|
- referring to the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFB93BADB41A39EC9" box="[1091,1257,954,976]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="family">Hydrophilidae</taxonomicName>
|
|||
|
|
, and the ending
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFCEABAB846339EF7" box="[826,889,985,1006]" italics="true" pageId="12" pageNumber="722">-yixia</emphasis>
|
|||
|
|
referring to the Yixian Formation from which both species of this genus are described. Feminine.
|
|||
|
|
</paragraph>
|
|||
|
|
<paragraph id="8BD436BAFF8CD67AFCEABD5846AC9878" blockId="12.[826,1441,1081,1378]" pageId="12" pageNumber="722">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFCEABD5841509957" box="[826,1050,1081,1102]" italics="true" pageId="12" pageNumber="722">Family assignment:</emphasis>
|
|||
|
|
The combination of large clypeus, well-developed frontoclypeal sutures reaching lateral margin of head closely before eyes, head not constricted behind eyes, and the small triangular scutellar shield assigns the fossil reliably to the family
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFC5CBDB3417A99F1" box="[908,1072,1234,1256]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="family">Hydrophilidae</taxonomicName>
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFBE8BDB3411699FE" box="[1080,1116,1234,1255]" italics="true" pageId="12" pageNumber="722">s.s.</emphasis>
|
|||
|
|
Additionally, it corresponds well with the modern aquatic groups of the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFA82BD9146DD983C" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="family">Hydrophilidae</taxonomicName>
|
|||
|
|
in general habitus, ventral morphology, and the presence of very distinct trichobothria on elytra and pronotum.
|
|||
|
|
</paragraph>
|
|||
|
|
<paragraph id="8BD436BAFF8CD666FCEABCEF416B9B81" blockId="12.[826,1441,1422,1903]" lastBlockId="16.[826,1441,1636,1688]" lastPageId="16" lastPageNumber="726" pageId="12" pageNumber="722">
|
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|
|
<emphasis id="B91FEAA8FF8CD67AFCEABCEF400198BA" box="[826,1355,1422,1443]" italics="true" pageId="12" pageNumber="722">Comparison with other hydrophilid genera:</emphasis>
|
|||
|
|
Based on the presence of the apical emargination on the posterior margin of the abdominal ventrite 5,
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFCEABC8846F298E7" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[826,952,1513,1534]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="genus">
|
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|
|
<emphasis id="B91FEAA8FF8CD67AFCEABC8846F298E7" box="[826,952,1513,1534]" italics="true" pageId="12" pageNumber="722">Hydroyixia</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
resembles the extant representatives of the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFCA7BF6941459B07" baseAuthorityName="Mulsant" baseAuthorityYear="1844" box="[887,1039,1544,1566]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="tribe" tribe="Hydrobiusini">Hydrobiusini</taxonomicName>
|
|||
|
|
, early branching
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFAD8BF6940D79B07" authorityName="Latreille" authorityYear="1802" box="[1288,1437,1544,1566]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="tribe" tribe="Hydrophilini">Hydrophilini</taxonomicName>
|
|||
|
|
,
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFCEABF4646F59B24" authorityName="Short & Fikacek" authorityYear="2013" box="[826,959,1575,1597]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="subFamily" subFamily="Enochrinae">Enochrinae</taxonomicName>
|
|||
|
|
, and
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFBC1BF4641ED9B24" baseAuthorityName="Zaitzev" baseAuthorityYear="1908" box="[1041,1191,1575,1597]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="subFamily" subFamily="Acidocerinae">Acidocerinae</taxonomicName>
|
|||
|
|
. In contrast to the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFCEABF2446859B42" authorityName="Latreille" authorityYear="1802" box="[826,975,1605,1627]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="tribe" tribe="Hydrophilini">Hydrophilini</taxonomicName>
|
|||
|
|
, the meso- and metaventrite of
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFA82BF24463B9B60" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFA82BF24463B9B60" italics="true" pageId="12" pageNumber="722">Hydroyixia</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
are not fused into a common ventral keel and the posterior leg lacks series of swimming hairs. In contrast to the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFC21BFC041339BAF" authorityName="Bedel" authorityYear="1881" box="[1009,1145,1697,1718]" class="Insecta" family="Hydrophilidae" genus="Cymbiodyta" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFC21BFC041339BAF" box="[1009,1145,1697,1718]" italics="true" pageId="12" pageNumber="722">Cymbiodyta</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
clade of the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFAC7BFC040D69BAE" authorityName="Short & Fikacek" authorityYear="2013" box="[1303,1436,1697,1719]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="subFamily" subFamily="Enochrinae">Enochrinae</taxonomicName>
|
|||
|
|
, the metathoracic leg bears five tarsomeres. The mesoventrite narrowing anteriad is not known in any extant genus of the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFBAEBF9C40499A0A" authorityName="Short & Fikacek" authorityYear="2013" box="[1150,1283,1789,1811]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="subFamily" subFamily="Enochrinae">Enochrinae</taxonomicName>
|
|||
|
|
, and in the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFCEABE7A46869A28" baseAuthorityName="Zaitzev" baseAuthorityYear="1908" box="[826,972,1819,1841]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="subFamily" subFamily="Acidocerinae">Acidocerinae</taxonomicName>
|
|||
|
|
only occurs in few clades of the
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFCEABE5B46FD9A56" box="[826,951,1850,1871]" class="Insecta" family="Hydrophilidae" genus="Helochares" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFCEABE5B46FD9A56" box="[826,951,1850,1871]" italics="true" pageId="12" pageNumber="722">Helochares</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
group (e.g. genus
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFB45BE5B463B9A77" authority="Regimbart, 1907" authorityName="Regimbart" authorityYear="1907" class="Insecta" family="Hydrophilidae" genus="Peltochares" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFB45BE5B405C9A56" box="[1173,1302,1850,1871]" italics="true" pageId="12" pageNumber="722">Peltochares</emphasis>
|
|||
|
|
<bibRefCitation id="EFFA4B4BFF8CD67AFAF1BE5B463B9A77" author="Regimbart M" pageId="12" pageNumber="722" pagination="46 - 62" refId="ref14558" refString="Regimbart M. 1907. Hydrophilides provenant du Voyage de M. L. Fea dans l'Afrique Occidentale. Annali del Museo Civico di Storia Naturale di Genova, Serie 3: 46 - 62." type="journal article" year="1907">Régimbart, 1907</bibRefCitation>
|
|||
|
|
</taxonomicName>
|
|||
|
|
and
|
|||
|
|
<taxonomicName id="4C6B4D39FF8CD67AFC69BE3841E29A77" box="[953,1192,1881,1902]" class="Insecta" family="Hydrophilidae" genus="Helochares" kingdom="Animalia" order="Coleoptera" pageId="12" pageNumber="722" phylum="Arthropoda" rank="species" species="obscurus">
|
|||
|
|
<emphasis id="B91FEAA8FF8CD67AFC69BE3841E29A77" box="[953,1192,1881,1902]" italics="true" pageId="12" pageNumber="722">Helochares obscurus</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
species group, from which
|
|||
|
|
<taxonomicName id="4C6B4D39FF90D666FF21BF0544259B60" authority="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie, 2014" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[241,367,1636,1657]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="genus" status="gen. nov.">
|
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<emphasis id="B91FEAA8FF90D666FF21BF0544259B60" box="[241,367,1636,1657]" italics="true" pageId="16" pageNumber="726">Hydroyixia</emphasis>
|
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</taxonomicName>
|
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<taxonomicNameLabel id="A22C57D3FF90D666FEA8BF0544949B60" box="[376,478,1636,1657]" pageId="16" pageNumber="726" rank="genus">gen. nov.</taxonomicNameLabel>
|
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differs by the presence of the sutural stria). Angular excision of the clypeus is present in the sperchopsine clade of the
|
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<taxonomicName id="4C6B4D39FF90D666FDA5BFC046409BAE" baseAuthorityName="Mulsant" baseAuthorityYear="1844" box="[629,778,1697,1719]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="tribe" tribe="Hydrobiusini">Hydrobiusini</taxonomicName>
|
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|
(which differ from
|
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|
|
<taxonomicName id="4C6B4D39FF90D666FE54BFA147489BCC" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[388,514,1728,1749]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF90D666FE54BFA147489BCC" box="[388,514,1728,1749]" italics="true" pageId="16" pageNumber="726">Hydroyixia</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
by denticulate lateral margins of elytra) and in many genera of the
|
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|
|
<taxonomicName id="4C6B4D39FF90D666FF74BF9C44709A0A" baseAuthorityName="Zaitzev" baseAuthorityYear="1908" box="[164,314,1789,1811]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="subFamily" subFamily="Acidocerinae">Acidocerinae</taxonomicName>
|
|||
|
|
. Many aquatic taxa of the
|
|||
|
|
<taxonomicName id="4C6B4D39FF90D666FDA9BF9C46419A0A" baseAuthorityName="Zaitzev" baseAuthorityYear="1908" box="[633,779,1789,1811]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="subFamily" subFamily="Acidocerinae">Acidocerinae</taxonomicName>
|
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|
|
are also characterized by very conspicuous trichobothria on pronotum and elytra, which corresponds to some specimens of
|
|||
|
|
<taxonomicName id="4C6B4D39FF90D666FE40BE3847449A77" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[400,526,1881,1902]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF90D666FE40BE3847449A77" box="[400,526,1881,1902]" italics="true" pageId="16" pageNumber="726">Hydroyixia</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
. The combination of characters present in
|
|||
|
|
<taxonomicName id="4C6B4D39FF90D666FBE2BF0541FA9B60" authorityName="Fikáček & Prokin & Yan & Yue & Wang & Ren & Beattie" authorityYear="2014" box="[1074,1200,1636,1657]" class="Insecta" family="Hydrophilidae" genus="Hydroyixia" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="genus">
|
|||
|
|
<emphasis id="B91FEAA8FF90D666FBE2BF0541FA9B60" box="[1074,1200,1636,1657]" italics="true" pageId="16" pageNumber="726">Hydroyixia</emphasis>
|
|||
|
|
</taxonomicName>
|
|||
|
|
hence assigns it best to the
|
|||
|
|
<taxonomicName id="4C6B4D39FF90D666FC57BFE341579B81" baseAuthorityName="Zaitzev" baseAuthorityYear="1908" box="[903,1053,1666,1688]" class="Insecta" family="Hydrophilidae" kingdom="Animalia" order="Coleoptera" pageId="16" pageNumber="726" phylum="Arthropoda" rank="subFamily" subFamily="Acidocerinae">Acidocerinae</taxonomicName>
|
|||
|
|
.
|
|||
|
|
</paragraph>
|
|||
|
|
</subSubSection>
|
|||
|
|
</treatment>
|
|||
|
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</document>
|