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<document id="B244E3FA1CD395757788B28E7E0E43D4" ID-CLB-Dataset="24540" ID-DOI="10.11646/zootaxa.4708.1.1" ID-GBIF-Dataset="653d580d-e1c7-499c-8604-4b5a7b1920ef" ID-ISSN="1175-5326" ID-Zenodo-Dep="3587181" ID-ZooBank="09F24F0B-5090-4089-A525-8E5150C91EF7" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1576825058981" checkinUser="plazi" docAuthor="Perkins, Philip D." docDate="2019" docId="03A587E7A855FFD30CBA1101FDE89282" docLanguage="en" docName="zootaxa.4708.1.1.pdf" docOrigin="Zootaxa 4708 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Hydrochus conjunctus Perkins 2019, new species" docType="treatment" docVersion="8" lastPageNumber="56" masterDocId="FF9CFF9FA863FFE40C2D1244FFE19255" masterDocTitle="Taxonomy of Venezuelan water beetles in the genus Hydrochus Leach, 1817, and an analysis of male genitalia morphology (Coleoptera: Hydrochidae)" masterLastPageNumber="59" masterPageNumber="1" pageNumber="55" updateTime="1698775642300" updateUser="ExternalLinkService">
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<mods:title id="B4C9172B1F7A354D83EBED90C147E3FE">Taxonomy of Venezuelan water beetles in the genus Hydrochus Leach, 1817, and an analysis of male genitalia morphology (Coleoptera: Hydrochidae)</mods:title>
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<mods:namePart id="902C919A7932F0C03F76AF5963CC3534">Perkins, Philip D.</mods:namePart>
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<mods:date id="8A729DE5B88F6109CD4282A60D13FB7E">2019</mods:date>
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<mods:number id="1E2D8C601ED73AC9344D369FAB916742">4708</mods:number>
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<treatment id="03A587E7A855FFD30CBA1101FDE89282" ID-DOI="http://doi.org/10.5281/zenodo.5941817" ID-GBIF-Taxon="160798413" ID-Zenodo-Dep="5941817" LSID="urn:lsid:plazi:treatment:03A587E7A855FFD30CBA1101FDE89282" httpUri="http://treatment.plazi.org/id/03A587E7A855FFD30CBA1101FDE89282" lastPageId="55" lastPageNumber="56" pageId="54" pageNumber="55">
<subSubSection id="C316657AA855FFD20CBA1101FDA0910A" box="[151,577,837,864]" pageId="54" pageNumber="55" type="nomenclature">
<paragraph id="8BB336F1A855FFD20CBA1101FDA0910A" blockId="54.[151,577,837,899]" box="[151,577,837,864]" pageId="54" pageNumber="55">
<heading id="D0FB819DA855FFD20CBA1101FDA0910A" bold="true" box="[151,577,837,864]" fontSize="11" level="1" pageId="54" pageNumber="55" reason="1">
<emphasis id="B978EAE3A855FFD20CBA1101FDA0910A" bold="true" box="[151,577,837,864]" pageId="54" pageNumber="55">
<taxonomicName id="4C0C4D72A855FFD20CBA1101FE4B910A" ID-CoL="8Y4PQ" authority="Perkins, 2019" authorityName="Perkins" authorityYear="2019" box="[151,426,837,864]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="conjunctus" status="sp. nov.">
<emphasis id="B978EAE3A855FFD20CBA1101FE4B910A" bold="true" box="[151,426,837,864]" italics="true" pageId="54" pageNumber="55">Hydrochus conjunctus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A24B5798A855FFD20D9C1101FDA0910A" box="[433,577,837,863]" pageId="54" pageNumber="55" rank="species">new species</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
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<subSubSection id="C316657AA855FFD20CBA112DFEEC91D6" box="[151,269,873,899]" pageId="54" pageNumber="55" type="description">
<paragraph id="8BB336F1A855FFD20CBA112DFEEC91D6" blockId="54.[151,577,837,899]" box="[151,269,873,899]" pageId="54" pageNumber="55">
<figureCitation id="13372A74A855FFD20CBA112DFF0291D6" box="[151,227,873,899]" captionStart="FIGURE 1" captionStartId="11.[151,250,1894,1919]" captionTargetBox="[156,1422,330,1824]" captionTargetId="figure@11.[151,1435,306,1866]" captionTargetPageId="11" captionText="FIGURE 1. Dorsal habitus of Hydrochus species." figureDoi="http://doi.org/10.5281/zenodo.3587183" httpUri="https://zenodo.org/record/3587183/files/figure.png" pageId="54" pageNumber="55">Figs. 1</figureCitation>
,
<figureCitation id="13372A74A855FFD20CDC112DFEEC91D6" box="[241,269,873,899]" captionStart="FIGURE 31" captionStartId="55.[151,250,1807,1832]" captionTargetBox="[186,1422,272,1746]" captionTargetId="figure@55.[151,1435,237,1782]" captionTargetPageId="55" captionText="FIGURE 31. Hydrochus conjunctus n. sp., habitus and male genitalia of holotype." figureDoi="http://doi.org/10.5281/zenodo.3587245" httpUri="https://zenodo.org/record/3587245/files/figure.png" pageId="54" pageNumber="55">31</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="C316657AA855FFD20CBA11F5FB489692" pageId="54" pageNumber="55" type="materials_examined">
<paragraph id="8BB336F1A855FFD20CBA11F5FD2891BA" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">
<emphasis id="B978EAE3A855FFD20CBA11F5FEA9919E" bold="true" box="[151,328,944,971]" pageId="54" pageNumber="55">Type Material.</emphasis>
<materialsCitation id="3B643CACA855FFD20D6211F5FD2891BA" ID-GBIF-Occurrence="2521263748" collectingDate="1978-02-01" collectionCode="NMNH" collectorName="J. B. Heppner" country="Venezuela" location="Rio Yuca" pageId="54" pageNumber="55" specimenCount="1" stateProvince="Barinas" typeStatus="holotype">
<emphasis id="B978EAE3A855FFD20D6211F5FD40919E" bold="true" box="[335,673,944,971]" pageId="54" pageNumber="55">
<typeStatus id="54B78853A855FFD20D6211F5FE5D919E" box="[335,444,945,971]" pageId="54" pageNumber="55" type="holotype">Holotype</typeStatus>
(male):
<collectingCountry id="F31B7661A855FFD20E0D11F5FD7C919E" box="[544,669,945,971]" name="Venezuela" pageId="54" pageNumber="55">Venezuela</collectingCountry>
:
</emphasis>
<collectingRegion id="49C8F813A855FFD20E9F11F5FCEC919E" box="[690,781,945,971]" country="Venezuela" name="Barinas" pageId="54" pageNumber="55">Barinas</collectingRegion>
, Barrancas Research Sta.,
<location id="8ED3602AA855FFD2081B11F5FB7E919E" LSID="urn:lsid:plazi:treatment:03A587E7A855FFD30CBA1101FDE89282:8ED3602AA855FFD2081B11F5FB7E919E" box="[1078,1183,945,971]" country="Venezuela" name="Rio Yuca" pageId="54" pageNumber="55" stateProvince="Barinas">Rio Yuca</location>
,
<date id="FFB21031A855FFD2088711F5FAF5919E" box="[1194,1300,945,971]" pageId="54" pageNumber="55" value="1978-02-01">
<collectingDate id="EFF6E9D9A855FFD2088711F5FAF5919E" box="[1194,1300,945,971]" pageId="54" pageNumber="55" value="1978-02-01">
1 II
<quantity id="4CF49B14A855FFD208F411F5FAF5919E" box="[1241,1300,945,971]" metricMagnitude="5" metricUnit="m" metricValue="6.0301632" pageId="54" pageNumber="55" unit="ft" value="1978400.0">1978</quantity>
</collectingDate>
</date>
, 400 ft, seasonal forest, black light,
<collectorName id="26F95327A855FFD20D811191FDA891BA" box="[428,585,981,1007]" pageId="54" pageNumber="55">J. B. Heppner</collectorName>
” (
<collectionCode id="ED1DAE34A855FFD20E4C1191FD5C91BA" box="[609,701,981,1007]" country="USA" httpUri="http://grbio.org/cool/142r-0w94" name="Smithsonian Institution, National Museum of Natural History" pageId="54" pageNumber="55" type="Museum">NMNH</collectionCode>
).
</materialsCitation>
</paragraph>
<paragraph id="8BB336F1A855FFD20CEA11BCFB489692" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">
<emphasis id="B978EAE3A855FFD20CEA11BCFE359646" bold="true" box="[199,468,1016,1043]" pageId="54" pageNumber="55">Differential Diagnosis.</emphasis>
Among Venezuelan species, differentiated from all others, except
<taxonomicName id="4C0C4D72A855FFD208E011BEFAA69646" authorityName="Perkins" authorityYear="2019" box="[1229,1351,1017,1043]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="collaris">
<emphasis id="B978EAE3A855FFD208E011BEFAA69646" box="[1229,1351,1017,1043]" italics="true" pageId="54" pageNumber="55">H. collaris</emphasis>
</taxonomicName>
and
<taxonomicName id="4C0C4D72A855FFD209AC11BEFEE89662" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="purpureus">
<emphasis id="B978EAE3A855FFD209AC11BEFEE89662" italics="true" pageId="54" pageNumber="55">H. purpureus</emphasis>
</taxonomicName>
, by the deep cervical groove behind the eyes.
<taxonomicName id="4C0C4D72A855FFD20F24165AFC429662" authorityName="Perkins" authorityYear="2019" box="[777,931,1054,1079]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="conjunctus">
<emphasis id="B978EAE3A855FFD20F24165AFC429662" box="[777,931,1054,1079]" italics="true" pageId="54" pageNumber="55">H. conjunctus</emphasis>
</taxonomicName>
is slightly smaller than the other two species, and has a slightly more elongate pronotum. Reliable determination of members of these three species of the
<taxonomicName id="4C0C4D72A855FFD2096A1605FA7C960E" authorityName="Perkins" authorityYear="2019" box="[1351,1437,1089,1115]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="collaris">
<emphasis id="B978EAE3A855FFD2096A1605FA7C960E" box="[1351,1437,1089,1115]" italics="true" pageId="54" pageNumber="55">collaris</emphasis>
</taxonomicName>
group will require dissection of males. In
<taxonomicName id="4C0C4D72A855FFD20E431622FCEB962A" authorityName="Perkins" authorityYear="2019" box="[622,778,1126,1151]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="conjunctus">
<emphasis id="B978EAE3A855FFD20E431622FCEB962A" box="[622,778,1126,1151]" italics="true" pageId="54" pageNumber="55">H. conjunctus</emphasis>
</taxonomicName>
the aedeagus is widest slightly above midlength, the basal piece is longer and more tapering than that of the compared species, and the adbl is shaped differently; refer also to the diagnosis of
<taxonomicName id="4C0C4D72A855FFD20D6216EAFE059692" box="[335,484,1198,1223]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="purpureus">
<emphasis id="B978EAE3A855FFD20D6216EAFE059692" box="[335,484,1198,1223]" italics="true" pageId="54" pageNumber="55">H. purpureus</emphasis>
</taxonomicName>
. Male genitalia of
<taxonomicName id="4C0C4D72A855FFD20E9516EAFCB29692" authorityName="Perkins" authorityYear="2019" box="[696,851,1198,1223]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="54" pageNumber="55" phylum="Arthropoda" rank="species" species="conjunctus">
<emphasis id="B978EAE3A855FFD20E9516EAFCB29692" box="[696,851,1198,1223]" italics="true" pageId="54" pageNumber="55">H. conjunctus</emphasis>
</taxonomicName>
(
<figureCitation id="13372A74A855FFD20F4E16E9FC559692" box="[867,948,1197,1223]" captionStart="FIGURE 31" captionStartId="55.[151,250,1807,1832]" captionTargetBox="[186,1422,272,1746]" captionTargetId="figure@55.[151,1435,237,1782]" captionTargetPageId="55" captionText="FIGURE 31. Hydrochus conjunctus n. sp., habitus and male genitalia of holotype." figureDoi="http://doi.org/10.5281/zenodo.3587245" httpUri="https://zenodo.org/record/3587245/files/figure.png" pageId="54" pageNumber="55">Fig. 31</figureCitation>
) are described below.
</paragraph>
</subSubSection>
<subSubSection id="C316657AA855FFD20CEA1694FBC7958A" pageId="54" pageNumber="55" type="description">
<paragraph id="8BB336F1A855FFD20CEA1694FE3597CA" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">
<emphasis id="B978EAE3A855FFD20CEA1694FEB096BE" bold="true" box="[199,337,1232,1259]" pageId="54" pageNumber="55">Description</emphasis>
. Habitus as illustrated (
<figureCitation id="13372A74A855FFD20E741695FD4D96BE" box="[601,684,1233,1259]" captionStart="FIGURE 31" captionStartId="55.[151,250,1807,1832]" captionTargetBox="[186,1422,272,1746]" captionTargetId="figure@55.[151,1435,237,1782]" captionTargetPageId="55" captionText="FIGURE 31. Hydrochus conjunctus n. sp., habitus and male genitalia of holotype." figureDoi="http://doi.org/10.5281/zenodo.3587245" httpUri="https://zenodo.org/record/3587245/files/figure.png" pageId="54" pageNumber="55">Fig. 31</figureCitation>
). Size:
<typeStatus id="54B78853A855FFD20ED31695FC8196BE" box="[766,864,1233,1259]" pageId="54" pageNumber="55" type="holotype">holotype</typeStatus>
(length/width, mm): body (length to elytral apices) 3.33/1.67; head width 0.81; pronotum l/w 0.81/0.71; PA 0.71; PB 0.57; elytra 2.11/1.67. Body size moderate (ca.
<quantity id="4CF49B14A855FFD20CBA175DFF1F9766" box="[151,254,1305,1331]" metricMagnitude="-3" metricUnit="m" metricValue="3.33" pageId="54" pageNumber="55" unit="mm" value="3.33">3.33 mm</quantity>
). Dorsum grey, with moderately strong iridescence, elytra with black spots. Legs testaceous to brown, with tibiofemoral joints darker. Punctation on elytra ca.
<date id="FFB21031A855FFD20EFC1779FD0C9702" box="[721,749,1341,1367]" pageId="54" pageNumber="55">2x</date>
that of pronotum. Elytra interstriae ca. 11.5x strial puncture diameter. Interstria 9
<superScript id="7C799BB9A855FFD20DAC1724FE6F973B" attach="left" box="[385,398,1376,1390]" fontSize="6" pageId="54" pageNumber="55">th</superScript>
more convex than others, overhanging 10
<superScript id="7C799BB9A855FFD20F471724FC96973B" attach="left" box="[874,887,1376,1390]" fontSize="6" pageId="54" pageNumber="55">th</superScript>
interstria. Usual area of callus on 5
<superScript id="7C799BB9A855FFD209271724FAF6973B" attach="left" box="[1290,1303,1376,1390]" fontSize="6" pageId="54" pageNumber="55">th</superScript>
moderately raised, moderately elongate.
</paragraph>
<paragraph id="8BB336F1A855FFD20CEA17EDFBF197B2" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">Head with deep curving cervical groove from side to side behind eyes, groove punctate, cervical area behind groove impunctate, shining, with very low, closely set longitudinal raised lines.</paragraph>
<paragraph id="8BB336F1A855FFD20CEA17B5FB969406" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">Pronotum longer than wide (as ca. 81/71), widest at anterior margin, narrowed at base, sides slightly sinuate, smooth; anterior margin markedly arcuate, fitting into cervical groove; depressions moderately deep, much more densely punctate than low reliefs between depressions, latter almost entirely impunctate.</paragraph>
<paragraph id="8BB336F1A855FFD20CEA1419FAA394CE" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">
Elytra with spaces between strial punctures ca. 0.5
<date id="FFB21031A855FFD20F221418FCC69422" box="[783,807,1628,1655]" pageId="54" pageNumber="55">1x</date>
their diameter; apices rather sharply conjointly rounded in dorsal view, in lateral view outer margin with distinct angulation, impunctate area of apices rather large.
</paragraph>
<paragraph id="8BB336F1A855FFD20CEA14E1FCFE94B6" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">Ventral characters: Mentum densely, moderately coarsely punctate, with shallow median fovea. Submentum with two deep foveae, posterior margin markedly arcuate.</paragraph>
<paragraph id="8BB336F1A855FFD20CEA14A9FB5695C2" blockId="54.[151,1437,944,2015]" pageId="54" pageNumber="55">
Male genitalia (
<figureCitation id="13372A74A855FFD20D5414A9FE2A9552" box="[377,459,1773,1799]" captionStart="FIGURE 31" captionStartId="55.[151,250,1807,1832]" captionTargetBox="[186,1422,272,1746]" captionTargetId="figure@55.[151,1435,237,1782]" captionTargetPageId="55" captionText="FIGURE 31. Hydrochus conjunctus n. sp., habitus and male genitalia of holotype." figureDoi="http://doi.org/10.5281/zenodo.3587245" httpUri="https://zenodo.org/record/3587245/files/figure.png" pageId="54" pageNumber="55">Fig. 31</figureCitation>
) general characters: genitalia slender; parameres expanded laterally apically in dorsal/ ventral views, tips wider in dorsal/ventral views than lateral view, extending slightly beyond distal end of aedeagus; basal piece shorter than parameres, tapering slightly from distal end to base, orifice strongly sclerotized, in lateral view “hooking” toward dorsad; aedeagus lanceolate, in lateral view much wider than paramere, lateral margins moderately widely sclerotized, greatest width at about distal 2/3, moderately tapering apically.
</paragraph>
<paragraph id="8BB336F1A855FFD20CEA15E5FC5395EE" blockId="54.[151,1437,944,2015]" box="[199,946,1953,1979]" pageId="54" pageNumber="55">Dorsal surface: adtl lacking; pdmm approximating alm; adbl large.</paragraph>
<paragraph id="8BB336F1A855FFD20CEA1581FBC7958A" blockId="54.[151,1437,944,2015]" box="[199,1062,1989,2015]" pageId="54" pageNumber="55">Ventral surface: pvmm basally overlapping alm, margins narrowly separated.</paragraph>
</subSubSection>
<subSubSection id="C316657AA854FFD30CEA12DDFDE89282" pageId="55" pageNumber="56" type="etymology">
<paragraph id="8BB336F1A854FFD30CEA12DDFDE89282" blockId="55.[151,1436,153,215]" pageId="55" pageNumber="56">
<emphasis id="B978EAE3A854FFD30CEA12DDFEAF92E6" bold="true" box="[199,334,153,179]" pageId="55" pageNumber="56">Etymology.</emphasis>
Named in reference to the deep cervical groove and the anterior margin of the pronotum, which fit together, forming a strong union.
</paragraph>
</subSubSection>
</treatment>
</document>