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<document id="244C49F5B106641D53594A7DEBF168D2" ID-DOI="10.11646/zootaxa.4994.1.1" ID-ISSN="1175-5326" ID-Zenodo-Dep="5043261" ID-ZooBank="107FCA64-345F-40A4-99D3-5C1441EEAD93" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1624993528766" checkinUser="plazi" docAuthor="Perkins, Philip D." docDate="2021" docId="03A187DEFFE6FFE46194FA570014F412" docLanguage="en" docName="zootaxa.4994.1.1.pdf" docOrigin="Zootaxa 4994 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Hydrochus fritillus Perkins 2021, new species" docType="treatment" docVersion="4" lastPageNumber="28" masterDocId="FF98FFA6FFFCFFFF6103FFF0045FF707" masterDocTitle="Taxonomy of water beetles in the genus Hydrochus Leach, 1817, from Bolivia, Brazil and Paraguay (Coleoptera: Hydrochidae)" masterLastPageNumber="93" masterPageNumber="1" pageNumber="27" updateTime="1698978858223" updateUser="plazi">
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<mods:title id="8C2EB19FA2E6AC014980C8D4ADE377D4">Taxonomy of water beetles in the genus Hydrochus Leach, 1817, from Bolivia, Brazil and Paraguay (Coleoptera: Hydrochidae)</mods:title>
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<mods:namePart id="56FFC7CAA7646C27D8EB8ADA2CA17EF3">Perkins, Philip D.</mods:namePart>
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<mods:title id="7E69775D6EE7F8AF3736F0A7693B2EA3">Zootaxa</mods:title>
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<mods:date id="E2B382468B96CF2D8142CFE0AF12CD6E">2021</mods:date>
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<mods:number id="C95CB32D4917B4D5982215217D7D4748">2021-06-28</mods:number>
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<mods:number id="AF86F3A4F95D130F8BCEF82865321DBA">4994</mods:number>
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<mods:classification id="766D90C2B0409FB3A34A9F93F6F277D0">journal article</mods:classification>
<mods:identifier id="2425C0FBB90EC61306C0A2E971733B42" type="DOI">10.11646/zootaxa.4994.1.1</mods:identifier>
<mods:identifier id="3E8D85F946D089415760414D70CCFCFC" type="ISSN">1175-5326</mods:identifier>
<mods:identifier id="BE047485ECB1B4683BEBE0F971370CEB" type="Zenodo-Dep">5043261</mods:identifier>
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<treatment id="03A187DEFFE6FFE46194FA570014F412" ID-DOI="http://doi.org/10.5281/zenodo.5043963" ID-Zenodo-Dep="5043963" LSID="urn:lsid:plazi:treatment:03A187DEFFE6FFE46194FA570014F412" httpUri="http://treatment.plazi.org/id/03A187DEFFE6FFE46194FA570014F412" lastPageId="27" lastPageNumber="28" pageId="26" pageNumber="27">
<subSubSection id="C3126543FFE6FFE56194FA570643F2C6" box="[151,540,1447,1474]" pageId="26" pageNumber="27" type="nomenclature">
<paragraph id="8BB736C8FFE6FFE56194FA570643F2C6" blockId="26.[151,540,1447,1510]" box="[151,540,1447,1474]" pageId="26" pageNumber="27">
<heading id="D0FF81A4FFE6FFE56194FA570643F2C6" bold="true" box="[151,540,1447,1474]" fontSize="11" level="2" pageId="26" pageNumber="27" reason="4">
<emphasis id="B97CEADAFFE6FFE56194FA570643F2C6" bold="true" box="[151,540,1447,1474]" pageId="26" pageNumber="27">
<taxonomicName id="4C084D4BFFE6FFE56194FA570521F2C5" ID-CoL="8Y4Q8" authority="Perkins, 2021" authorityName="Perkins" authorityYear="2021" box="[151,382,1447,1474]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="fritillus" status="sp. nov.">
<emphasis id="B97CEADAFFE6FFE56194FA570521F2C5" bold="true" box="[151,382,1447,1474]" italics="true" pageId="26" pageNumber="27">Hydrochus fritillus</emphasis>
</taxonomicName>
,
<taxonomicNameLabel id="A24F57A1FFE6FFE5608FFA570643F2C6" box="[396,540,1447,1473]" pageId="26" pageNumber="27" rank="species">new species</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C3126543FFE6FFE56194FA3B0568F2E1" box="[151,311,1483,1510]" pageId="26" pageNumber="27" type="description">
<paragraph id="8BB736C8FFE6FFE56194FA3B0568F2E1" blockId="26.[151,540,1447,1510]" box="[151,311,1483,1510]" pageId="26" pageNumber="27">
<figureCitation id="13332A4DFFE6FFE56194FA3B04BAF2E2" box="[151,229,1483,1509]" captionStart="FIGURE 2" captionStartId="7.[151,250,1943,1967]" captionTargetBox="[164,1405,189,1904]" captionTargetId="figure-15@7.[153,1434,181,1919]" captionTargetPageId="7" captionText="FIGURE 2. Dorsal habitus of Hydrochus species in study area." figureDoi="http://doi.org/10.5281/zenodo.5043267" httpUri="https://zenodo.org/record/5043267/files/figure.png" pageId="26" pageNumber="27">Figs. 2</figureCitation>
,
<figureCitation id="13332A4DFFE6FFE561F2FA3B0550F2E2" box="[241,271,1483,1509]" captionStart="FIGURES 2021" captionStartId="62.[151,264,1892,1916]" captionTargetBox="[168,1421,226,1828]" captionTargetId="figure-28@62.[151,1435,181,1869]" captionTargetPageId="62" captionText="FIGURES 2021. Habitus and male genitalia of holotypes. 20. Hydrochus distinctulus n. sp. 21. Hydrochus fritillus. n. sp." figureDoi="http://doi.org/10.5281/zenodo.5043300" httpUri="https://zenodo.org/record/5043300/files/figure.png" pageId="26" pageNumber="27">21</figureCitation>
,
<figureCitation id="13332A4DFFE6FFE56018FA3B0568F2E1" box="[283,311,1483,1510]" captionStart="FIGURES 5960" captionStartId="82.[151,264,1677,1701]" captionTargetBox="[157,1431,181,1654]" captionTargetId="figure-28@82.[157,1431,181,1654]" captionTargetPageId="82" captionText="FIGURES 5960. Geographical distributions. 59. Endemics and near endemics. 60. H. formosus." figureDoi="http://doi.org/10.5281/zenodo.5043360" httpUri="https://zenodo.org/record/5043360/files/figure.png" pageId="26" pageNumber="27">59</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="C3126543FFE6FFE56194F9E307EDF155" pageId="26" pageNumber="27" type="materials_examined">
<paragraph id="8BB736C8FFE6FFE56194F9E307EDF155" blockId="26.[151,1437,1555,2014]" pageId="26" pageNumber="27">
<emphasis id="B97CEADAFFE6FFE56194F9E30517F12A" bold="true" box="[151,328,1555,1581]" pageId="26" pageNumber="27">Type Material.</emphasis>
<materialsCitation id="3B603C95FFE6FFE5604CF9E305EEF156" collectionCode="NMNH" country="Brazil" county="Borys Malkin" location="Matto Grosso" municipality="Santa Isabel" pageId="26" pageNumber="27" specimenCount="1" typeStatus="holotype">
<emphasis id="B97CEADAFFE6FFE5604CF9E30672F12A" bold="true" box="[335,557,1555,1581]" pageId="26" pageNumber="27">
<typeStatus id="54B3886AFFE6FFE5604CF9E305E3F12A" box="[335,444,1555,1581]" pageId="26" pageNumber="27" type="holotype">Holotype</typeStatus>
(male): “
</emphasis>
<collectingCountry id="F31F7658FFE6FFE5632EF9E306C8F12A" box="[557,663,1555,1581]" name="Brazil" pageId="26" pageNumber="27">BRAZIL</collectingCountry>
:
<location id="8ED76013FFE6FFE563A2F9E40765F12A" LSID="urn:lsid:plazi:treatment:03A187DEFFE6FFE46194FA570014F412:8ED76013FFE6FFE563A2F9E40765F12A" box="[673,826,1555,1582]" country="Brazil" county="Borys Malkin" municipality="Santa Isabel" name="Matto Grosso" pageId="26" pageNumber="27">Matto Grosso</location>
side of
<location id="8ED76013FFE6FFE56290F9E30074F12A" LSID="urn:lsid:plazi:treatment:03A187DEFFE6FFE46194FA570014F412:8ED76013FFE6FFE56290F9E30074F12A" box="[915,1067,1555,1581]" country="Brazil" county="Borys Malkin" municipality="Santa Isabel" name="Rio Araguaia" pageId="26" pageNumber="27">Rio Araguaia</location>
,
<collectingMunicipality id="6BD3ACB2FFE6FFE56535F9E300E1F12A" box="[1078,1214,1555,1581]" pageId="26" pageNumber="27">Santa Isabel</collectingMunicipality>
// VIII-12 to 22-57,
<collectingCounty id="62D64E44FFE6FFE56194F9C8056AF156" box="[151,309,1591,1618]" pageId="26" pageNumber="27">Borys Malkin</collectingCounty>
” (
<collectionCode id="ED19AE0DFFE6FFE5604EF9C705F6F156" box="[333,425,1591,1617]" country="USA" httpUri="http://grbio.org/cool/142r-0w94" name="Smithsonian Institution, National Museum of Natural History" pageId="26" pageNumber="27" type="Museum">NMNH</collectionCode>
)
</materialsCitation>
.
<materialsCitation id="3B603C95FFE6FFE560BFF9C707F1F155" box="[444,942,1591,1618]" collectionCode="NMNH" country="Brazil" county="Borys Malkin" location="Matto Grosso" municipality="Santa Isabel" pageId="26" pageNumber="27" specimenCount="1" typeStatus="paratype">
<emphasis id="B97CEADAFFE6FFE560BFF9C70676F156" bold="true" box="[444,553,1591,1617]" pageId="26" pageNumber="27">
<typeStatus id="54B3886AFFE6FFE560BFF9C70676F156" box="[444,553,1591,1617]" pageId="26" pageNumber="27" type="paratype">Paratype</typeStatus>
</emphasis>
same data as holotype (1
<collectionCode id="ED19AE0DFFE6FFE56248F9C807F9F155" box="[843,934,1592,1618]" country="USA" httpUri="http://grbio.org/cool/142r-0w94" name="Smithsonian Institution, National Museum of Natural History" pageId="26" pageNumber="27" type="Museum">NMNH</collectionCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C3126543FFE6FFE561C4F9AB04A1F002" pageId="26" pageNumber="27" type="diagnosis">
<paragraph id="8BB736C8FFE6FFE561C4F9AB04A1F002" blockId="26.[151,1437,1555,2014]" pageId="26" pageNumber="27">
<emphasis id="B97CEADAFFE6FFE561C4F9AB058BF172" bold="true" box="[199,468,1627,1653]" pageId="26" pageNumber="27">Differential Diagnosis.</emphasis>
Among Brazilian species, recognized by the combination of moderate size (ca.
<quantity id="4CF09B2DFFE6FFE56468F9AB0498F19D" metricMagnitude="-3" metricUnit="m" metricValue="3.41" pageId="26" pageNumber="27" unit="mm" value="3.41">3.41 mm</quantity>
), the numerous round black dots on the elytra, the pronotal depressions moderately deep, much more densely punctate than the low reliefs between depressions, latter almost entirely impunctate, and the male genitalia (
<figureCitation id="13332A4DFFE6FFE56446F95301C8F1BA" box="[1349,1431,1699,1725]" captionStart="FIGURES 2021" captionStartId="62.[151,264,1892,1916]" captionTargetBox="[168,1421,226,1828]" captionTargetId="figure-28@62.[151,1435,181,1869]" captionTargetPageId="62" captionText="FIGURES 2021. Habitus and male genitalia of holotypes. 20. Hydrochus distinctulus n. sp. 21. Hydrochus fritillus. n. sp." figureDoi="http://doi.org/10.5281/zenodo.5043300" httpUri="https://zenodo.org/record/5043300/files/figure.png" pageId="26" pageNumber="27">Fig. 21</figureCitation>
; described below). This species has a generalized
<taxonomicName id="4C084D4BFFE6FFE563BFF9370769F1E6" authorityName="Leach" authorityYear="1817" box="[700,822,1735,1761]" class="Insecta" family="Hydrochidae" genus="Hydrochus" kingdom="Animalia" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="genus">
<emphasis id="B97CEADAFFE6FFE563BFF9370769F1E6" box="[700,822,1735,1761]" italics="true" pageId="26" pageNumber="27">Hydrochus</emphasis>
</taxonomicName>
habitus; reliable determinations will require dissection of males.
</paragraph>
</subSubSection>
<subSubSection id="C3126543FFE6FFE461C4F8FF050AF5F6" lastPageId="27" lastPageNumber="28" pageId="26" pageNumber="27" type="description">
<paragraph id="8BB736C8FFE6FFE561C4F8FF0768F0DA" blockId="26.[151,1437,1555,2014]" pageId="26" pageNumber="27">
<emphasis id="B97CEADAFFE6FFE561C4F8FF050EF02E" bold="true" box="[199,337,1807,1833]" pageId="26" pageNumber="27">Description</emphasis>
. Size:
<typeStatus id="54B3886AFFE6FFE560A7F8FF0659F02E" box="[420,518,1807,1833]" pageId="26" pageNumber="27" type="holotype">holotype</typeStatus>
(length/width, mm): body (length to elytral apices) 3.41/1.15; head width 0.82; pronotum l/w 0.74/0.75; PA 0.72; PB 0.64; elytra 2.18/1.15. Habitus as illustrated (
<figureCitation id="13332A4DFFE6FFE5654CF8C300FBF04A" box="[1103,1188,1843,1869]" captionStart="FIGURES 2021" captionStartId="62.[151,264,1892,1916]" captionTargetBox="[168,1421,226,1828]" captionTargetId="figure-28@62.[151,1435,181,1869]" captionTargetPageId="62" captionText="FIGURES 2021. Habitus and male genitalia of holotypes. 20. Hydrochus distinctulus n. sp. 21. Hydrochus fritillus. n. sp." figureDoi="http://doi.org/10.5281/zenodo.5043300" httpUri="https://zenodo.org/record/5043300/files/figure.png" pageId="26" pageNumber="27">Fig. 21</figureCitation>
). Body size moderate (ca.
<quantity id="4CF09B2DFFE6FFE561CBF8A7056FF075" box="[200,304,1879,1906]" metricMagnitude="-3" metricUnit="m" metricValue="3.41" pageId="26" pageNumber="27" unit="mm" value="3.41">3.41 mm</quantity>
). Dorsum grey to reddish grey, with very slight iridescence, elytra with black spots. Legs testaceous, with tibiofemoral joints darker. Punctation on elytra ca. 23x that of pronotum. Elytra interstriae ca. 11.5x strial puncture diameter. Interstria 9
<superScript id="7C7D9B80FFE6FFE560E5F86F05ACF0AA" attach="left" box="[486,499,1951,1965]" fontSize="6" pageId="26" pageNumber="27">th</superScript>
more convex than others, overhanging 10
<superScript id="7C7D9B80FFE6FFE562C6F86F078DF0AA" attach="left" box="[965,978,1951,1965]" fontSize="6" pageId="26" pageNumber="27">th</superScript>
interstria. Usual area of callus on 5
<superScript id="7C7D9B80FFE6FFE5645AF86F0139F0AA" attach="left" box="[1369,1382,1951,1965]" fontSize="6" pageId="26" pageNumber="27">th</superScript>
well raised, moderately elongate, ca. 45 punctures on each side.
</paragraph>
<paragraph id="8BB736C8FFE7FFE461C4FF670722F7FE" blockId="27.[151,1437,151,789]" pageId="27" pageNumber="28">Pronotum length and width ca. equal, widest slightly behind anterior margin, narrowed at base, sides weakly sinuate, smooth; anterior margin slightly bisinuate; depressions moderately deep, much more densely punctate than low reliefs between depressions, latter almost entirely impunctate.</paragraph>
<paragraph id="8BB736C8FFE7FFE461C4FEF30769F646" blockId="27.[151,1437,151,789]" pageId="27" pageNumber="28">Elytra with spaces between strial punctures ca. 11.5x their diameter; apices rather sharply conjointly rounded in dorsal view, in lateral view outer margin with angulation.</paragraph>
<paragraph id="8BB736C8FFE7FFE461C4FEBB0095F662" blockId="27.[151,1437,151,789]" box="[199,1226,331,357]" pageId="27" pageNumber="28">Ventral characters: Mentum punctate, with central depression; submentum with two foveae.</paragraph>
<paragraph id="8BB736C8FFE7FFE461C4FE9F001FF566" blockId="27.[151,1437,151,789]" pageId="27" pageNumber="28">
Male genitalia (
<figureCitation id="13332A4DFFE7FFE4607BFE9F0596F68E" box="[376,457,367,393]" captionStart="FIGURES 2021" captionStartId="62.[151,264,1892,1916]" captionTargetBox="[168,1421,226,1828]" captionTargetId="figure-28@62.[151,1435,181,1869]" captionTargetPageId="62" captionText="FIGURES 2021. Habitus and male genitalia of holotypes. 20. Hydrochus distinctulus n. sp. 21. Hydrochus fritillus. n. sp." figureDoi="http://doi.org/10.5281/zenodo.5043300" httpUri="https://zenodo.org/record/5043300/files/figure.png" pageId="27" pageNumber="28">Fig. 21</figureCitation>
) general characters: genitalia elongate, length ca. 5x greatest width, basal piece shorter than parameres (ratio ca. 11/14); paramere tips extending well beyond aedeagus tip, medial margins beyond aedeagus tip diverging slightly one from the other, plsa absent, lateral margins of tips straight; parameres medial margins in dorsal/ventral views angulate; in lateral view parameres slightly sinuate, sharply pointed apically; aedeagus moderately wide, sides arcuate, agw slightly distal to midlength; basal piece in dorsal/ventral views nearly parallel-sided, in lateral view dorsal surface slightly more arcuate than ventral, maximum width in dorsal/ventral views slightly greater than lateral width, orifice slightly asymmetrical, margin sclerotized.
</paragraph>
<paragraph id="8BB736C8FFE7FFE461C4FD9B070AF5AE" blockId="27.[151,1437,151,789]" pageId="27" pageNumber="28">Dorsal surface: adtl slightly distal to midlength; pdmm sinuate, widely separated, except contacting adbl; adbl large, width ca. equal to agw, in lateral view adbl large, lobate.</paragraph>
<paragraph id="8BB736C8FFE7FFE461C4FD43050AF5F6" blockId="27.[151,1437,151,789]" pageId="27" pageNumber="28">Ventral surface: avtl very near base, almost at adbl; pvmm separation greater than pdmm, overlapping alm only at base; gp large.</paragraph>
</subSubSection>
<subSubSection id="C3126543FFE7FFE461C4FD0B0014F412" box="[199,1099,763,789]" pageId="27" pageNumber="28" type="etymology">
<paragraph id="8BB736C8FFE7FFE461C4FD0B0014F412" blockId="27.[151,1437,151,789]" box="[199,1099,763,789]" pageId="27" pageNumber="28">
<emphasis id="B97CEADAFFE7FFE461C4FD0B0517F412" bold="true" box="[199,328,763,789]" pageId="27" pageNumber="28">Etymology</emphasis>
. Named in reference to the numerous round black dots on the elytra.
</paragraph>
</subSubSection>
</treatment>
</document>