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<document id="87212E5E472F5ED667A72143B1E9F44F" ID-DOI="10.11646/zootaxa.3972.4.3" ID-GBIF-Dataset="549c7fa4-ba3a-48b0-bc83-560ef7acfd1b" ID-ISSN="1175-5326" ID-Zenodo-Dep="243042" ID-ZooBank="CC1ED425-B897-4107-B39B-BA64D88A7980" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461189786377" checkinUser="plazi" docAuthor="Bilton, David T." docDate="2015" docId="03FFBF2FFFD5FFA3FF2CF9E5C410000B" docLanguage="en" docName="zt03972p520.pdf" docOrigin="Zootaxa 3972 (4)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Mesoceration helmei Bilton, 2015, sp. nov." docType="treatment" docVersion="7" lastPageNumber="503" masterDocId="FFC6C757FFD3FFABFFBBFFD2C13F031C" masterDocTitle="New species and new records of Mesoceration Janssens, 1967 from South Africa (Coleoptera, Hydraenidae)" masterLastPageNumber="520" masterPageNumber="495" pageNumber="501" updateTime="1698600606930" updateUser="plazi">
<mods:mods id="2D97F27F6394722C47D32517848D4AC8" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="B8772886C5C591A096C44C84CD62F102">
<mods:title id="33A359909FA75C6A4947982D367ECDF2">New species and new records of Mesoceration Janssens, 1967 from South Africa (Coleoptera, Hydraenidae)</mods:title>
</mods:titleInfo>
<mods:name id="15A577665860D2831855200C1E45D4AC" type="personal">
<mods:role id="89D597B96D1AE56F9B850B1BFAFAA56C">
<mods:roleTerm id="7063F494A8AE1B854591095DF5B0F0E8">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="E266B5D2E574316A89ADF036A97E52CA">Bilton, David T.</mods:namePart>
</mods:name>
<mods:typeOfResource id="E35FE1CFF9B7A9A6BFC6575FF5006059">text</mods:typeOfResource>
<mods:relatedItem id="ECDEB59E4483869854E1DAF4B58D78AA" type="host">
<mods:titleInfo id="2C2A8F7C8DC4FF277439F55C14B17BE2">
<mods:title id="9D1E885591F8DAF09CD43A14C9D1EF68">Zootaxa</mods:title>
</mods:titleInfo>
<mods:part id="A8A2D3819EE446DA86A9189953053D11">
<mods:date id="9065FE181C105F4E519134F2B190AB93">2015</mods:date>
<mods:detail id="BCCD3187B6FC616F3798D19FA78766DF" type="volume">
<mods:number id="F540AF3D304D7124E376BCF6CD7D6F28">3972</mods:number>
</mods:detail>
<mods:detail id="A62BD59C746D25C51B38B21B18608DAB" type="issue">
<mods:number id="9B7B208ABF4D9BB3A663243190CE7E92">4</mods:number>
</mods:detail>
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<mods:start id="10F6A353D8AF91C09D19CA17C3B8D26A">495</mods:start>
<mods:end id="87CFD2D9FB60453FD484F1CE459E8D72">520</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:classification id="F07CB2712C0948D521D7AF5F882D7EFF">journal article</mods:classification>
<mods:identifier id="C889736B06219E443187842EF4FED7BA" type="DOI">10.11646/zootaxa.3972.4.3</mods:identifier>
<mods:identifier id="C788CD2EFBFC9F03211B02055E004AA2" type="GBIF-Dataset">549c7fa4-ba3a-48b0-bc83-560ef7acfd1b</mods:identifier>
<mods:identifier id="E4262EEB0A15928E42BF10A20E223C70" type="ISSN">1175-5326</mods:identifier>
<mods:identifier id="37F91105304F3423DBA9F279A34BABB0" type="Zenodo-Dep">243042</mods:identifier>
<mods:identifier id="8DFA74C6782A7C673DCD1F7DAE3DBB02" type="ZooBank">CC1ED425-B897-4107-B39B-BA64D88A7980</mods:identifier>
</mods:mods>
<treatment id="03FFBF2FFFD5FFA3FF2CF9E5C410000B" ID-DOI="http://doi.org/10.5281/zenodo.6107734" ID-GBIF-Taxon="119629316" ID-Zenodo-Dep="6107734" LSID="urn:lsid:plazi:treatment:03FFBF2FFFD5FFA3FF2CF9E5C410000B" httpUri="http://treatment.plazi.org/id/03FFBF2FFFD5FFA3FF2CF9E5C410000B" lastPageId="8" lastPageNumber="503" pageId="6" pageNumber="501">
<subSubSection id="C34C5DB2FFD5FFADFF2CF9E5C01F056F" pageId="6" pageNumber="501" type="nomenclature">
<paragraph id="8BE90E39FFD5FFADFF2CF9E5C0C6054E" blockId="6.[151,505,1591,1651]" box="[151,505,1591,1618]" pageId="6" pageNumber="501">
<heading id="D0A1B955FFD5FFADFF2CF9E5C0C6054E" bold="true" box="[151,505,1591,1618]" fontSize="11" level="1" pageId="6" pageNumber="501" reason="1">
<emphasis id="B922D22BFFD5FFADFF2CF9E5C0C6054E" bold="true" box="[151,505,1591,1618]" pageId="6" pageNumber="501">
<taxonomicName id="4C5675BAFFD5FFADFF2CF9E5C0AA054D" ID-CoL="6RBW3" box="[151,405,1591,1617]" class="Insecta" family="Hydraenidae" genus="Mesoceration" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="501" phylum="Arthropoda" rank="species" species="helmei" status="sp. nov.">
<emphasis id="B922D22BFFD5FFADFF2CF9E5C0AA054D" bold="true" box="[151,405,1591,1617]" italics="true" pageId="6" pageNumber="501">Mesoceration helmei</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2116F50FFD5FFADFE20F9EAC0C6054E" box="[411,505,1592,1618]" pageId="6" pageNumber="501" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="8BE90E39FFD5FFADFF2CF988C01F056F" blockId="6.[151,505,1591,1651]" box="[151,288,1626,1651]" pageId="6" pageNumber="501">
(
<figureCitation id="136D12BCFFD5FFADFF24F988C1DA056F" box="[159,229,1626,1651]" captionStart="FIGURE 1" captionStartId="3.[151,250,1948,1970]" captionTargetBox="[179,1408,203,1904]" captionTargetId="figure@3.[160,1426,195,1922]" captionTargetPageId="3" captionText="FIGURE 1. Habitus of Mesoceration holotypes. A) M. caniplenum sp. nov.; B) M. foggoi sp. nov.; C) M. helmei sp. nov.; D) M. hirsutum sp. nov." httpUri="https://zenodo.org/record/243043/files/figure.png" pageId="6" pageNumber="501">Figs 1</figureCitation>
&amp;
<figureCitation id="136D12BCFFD5FFADFEB2F989C027056F" box="[265,280,1627,1651]" captionStart="FIGURE 2" captionStartId="4.[151,250,1953,1975]" captionTargetBox="[234,1357,212,1925]" captionTargetId="figure@4.[206,1380,193,1931]" captionTargetPageId="4" captionText="FIGURE 2. Aedeagi of Mesoceration species. A) M. caniplenum sp. nov., holotype; B) M. foggoi sp. nov., holotype; C) M. helmei sp. nov., holotype; D) M. hirsutum sp. nov., paratype. Scale bar = 0.25 mm." httpUri="https://zenodo.org/record/243044/files/figure.png" pageId="6" pageNumber="501">2</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C34C5DB2FFD5FFADFF2CF970C094048F" pageId="6" pageNumber="501" type="materials_examined">
<paragraph id="8BE90E39FFD5FFADFF2CF970C1C505C2" blockId="6.[151,1437,1698,2011]" pageId="6" pageNumber="501">
<emphasis id="B922D22BFFD5FFADFF2CF970C00E05A7" bold="true" box="[151,305,1698,1723]" pageId="6" pageNumber="501">
<typeStatus id="54EDB09BFFD5FFADFF2CF970C1ED05A7" box="[151,210,1698,1723]" pageId="6" pageNumber="501">Type</typeStatus>
locality
</emphasis>
.
<emphasis id="B922D22BFFD5FFADFEFFF970C0DF05A7" bold="true" box="[324,480,1698,1723]" pageId="6" pageNumber="501">
<collectingCountry id="F3414EA9FFD5FFADFEFFF970C0DF05A7" box="[324,480,1698,1723]" name="South Africa" pageId="6" pageNumber="501">South Africa</collectingCountry>
</emphasis>
, Western Cape, Groote Winterhoek mountains, small stream below Sneeugatpiek,
<quantity id="4CAEA3DCFFD5FFADFF2CF915C1C905C2" box="[151,246,1735,1759]" metricMagnitude="3" metricUnit="m" metricValue="1.3" pageId="6" pageNumber="501" unit="m" value="1300.0">1,300 m</quantity>
.
</paragraph>
<paragraph id="8BE90E39FFD5FFADFF7CF938C1D10457" blockId="6.[151,1437,1698,2011]" pageId="6" pageNumber="501">
<emphasis id="B922D22BFFD5FFADFF7CF938C04D041F" bold="true" box="[199,370,1770,1795]" pageId="6" pageNumber="501">
<typeStatus id="54EDB09BFFD5FFADFF7CF938C03D041F" box="[199,258,1770,1795]" pageId="6" pageNumber="501">Type</typeStatus>
material
</emphasis>
.
<emphasis id="B922D22BFFD5FFADFE3EF938C0CD041F" bold="true" box="[389,498,1770,1795]" pageId="6" pageNumber="501">
<typeStatus id="54EDB09BFFD5FFADFE3EF938C0CD041F" box="[389,498,1770,1795]" pageId="6" pageNumber="501" type="holotype">Holotype</typeStatus>
</emphasis>
(male): “
<date id="FFE828F9FFD5FFADFDDEF938C3E6041F" box="[613,729,1770,1795]" pageId="6" pageNumber="501" value="2015-02-11">11/ii/2015</date>
<collectingCountry id="F3414EA9FFD5FFADFD5EF938C245041F" box="[741,890,1770,1795]" name="South Africa" pageId="6" pageNumber="501">South Africa</collectingCountry>
WC// Groote-Winterhoekberge stream below// Sneeugatpiek
<quantity id="4CAEA3DCFFD5FFADFE83F8DDC0A8043A" box="[312,407,1807,1831]" metricMagnitude="3" metricUnit="m" metricValue="1.3" pageId="6" pageNumber="501" unit="m" value="1300.0">1,300 m</quantity>
D T Bilton leg.” (genitalia extracted and mounted on same card) and red
<typeStatus id="54EDB09BFFD5FFADFB41F8DCC463043B" box="[1274,1372,1806,1831]" pageId="6" pageNumber="501" type="holotype">holotype</typeStatus>
label (
<collectionCode id="ED4796FCFFD5FFADFF24F8E1C1DE0457" box="[159,225,1843,1867]" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="6" pageNumber="501">SAM</collectionCode>
).
</paragraph>
<paragraph id="8BE90E39FFD5FFADFF7CF884C094048F" blockId="6.[151,1437,1698,2011]" pageId="6" pageNumber="501">
<emphasis id="B922D22BFFD5FFADFF7CF884C0000473" bold="true" box="[199,319,1878,1903]" pageId="6" pageNumber="501">
<typeStatus id="54EDB09BFFD5FFADFF7CF884C0000473" box="[199,319,1878,1903]" pageId="6" pageNumber="501" type="paratype">Paratypes</typeStatus>
</emphasis>
(14)
<specimenCount id="9D50C5B0FFD5FFADFEC6F885C0970472" box="[381,424,1879,1903]" pageId="6" pageNumber="501" type="generic">4 ♂</specimenCount>
10 ♀ same data as
<typeStatus id="54EDB09BFFD5FFADFD33F884C3D50473" box="[648,746,1878,1903]" pageId="6" pageNumber="501" type="holotype">holotype</typeStatus>
(
<collectionCode id="ED4796FCFFD5FFADFD41F885C2760473" box="[762,841,1879,1903]" pageId="6" pageNumber="501">CDTB</collectionCode>
,
<collectionCode id="ED4796FCFFD5FFADFCEEF885C2AB0473" LSID="urn:lsid:biocol.org:col:33791" box="[853,916,1879,1903]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:33791" name="Museum of Comparative Zoology" pageId="6" pageNumber="501">MCZ</collectionCode>
,
<collectionCode id="ED4796FCFFD5FFADFC1BF885C2D70472" box="[928,1000,1879,1902]" httpUri="http://grbio.org/cool/c7yt-hh77" name="Naturhistorisches Museum, Wien" pageId="6" pageNumber="501">NMW</collectionCode>
,
<collectionCode id="ED4796FCFFD5FFADFC4FF885C55E0473" box="[1012,1121,1879,1903]" pageId="6" pageNumber="501">OUMNH</collectionCode>
,
<collectionCode id="ED4796FCFFD5FFADFBD6F885C5920473" box="[1133,1197,1879,1903]" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="6" pageNumber="501">SAM</collectionCode>
,
<collectionCode id="ED4796FCFFD5FFADFB02F885C4390473" LSID="urn:lsid:biocol.org:col:34248" box="[1209,1286,1879,1903]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34248" name="Agricultural Research Council-Plant Protection Research Institute" pageId="6" pageNumber="501">SANC</collectionCode>
,
<collectionCode id="ED4796FCFFD5FFADFAA9F885C45A0473" box="[1298,1381,1879,1903]" httpUri="http://grbio.org/cool/s8gp-ktsi" name="Transvaal Museum" pageId="6" pageNumber="501">TMSA</collectionCode>
). All with red
<typeStatus id="54EDB09BFFD5FFADFF41F8A9C065048F" box="[250,346,1915,1939]" pageId="6" pageNumber="501" type="paratype">paratype</typeStatus>
labels.
</paragraph>
</subSubSection>
<subSubSection id="C34C5DB2FFD5FFA3FF7CF84CC36F0107" lastPageId="8" lastPageNumber="503" pageId="6" pageNumber="501" type="description">
<paragraph id="8BE90E39FFD5FFADFF7CF84CC56C04C6" blockId="6.[151,1437,1698,2011]" pageId="6" pageNumber="501">
<emphasis id="B922D22BFFD5FFADFF7CF84CC06E04AB" bold="true" box="[199,337,1950,1975]" pageId="6" pageNumber="501">Description</emphasis>
. Size:
<typeStatus id="54EDB09BFFD5FFADFE25F84CC33404AB" box="[414,523,1950,1975]" pageId="6" pageNumber="501" type="holotype">Holotype</typeStatus>
: BL
<quantity id="4CAEA3DCFFD5FFADFD84F84CC39904AA" box="[575,678,1950,1975]" metricMagnitude="-3" metricUnit="m" metricValue="1.55" pageId="6" pageNumber="501" unit="mm" value="1.55">1.55 mm</quantity>
; EL
<quantity id="4CAEA3DCFFD5FFADFD61F84DC20D04AA" box="[730,818,1951,1975]" metricMagnitude="-4" metricUnit="m" metricValue="9.0" pageId="6" pageNumber="501" unit="mm" value="0.9">0.9 mm</quantity>
; EW
<quantity id="4CAEA3DCFFD5FFADFCCBF84CC2F704AA" box="[880,968,1950,1975]" metricMagnitude="-4" metricUnit="m" metricValue="6.0" pageId="6" pageNumber="501" unit="mm" value="0.6">0.6 mm</quantity>
.
<typeStatus id="54EDB09BFFD5FFADFC68F84DC57A04AB" box="[979,1093,1951,1975]" pageId="6" pageNumber="501" type="paratype">Paratypes</typeStatus>
: ♂s BL
<quantity id="4CAEA3DCFFD5FFADFB24F84CC40804AA" box="[1183,1335,1950,1975]" metricMagnitude="-3" metricUnit="m" metricValue="1.625" metricValueMax="1.7" metricValueMin="1.55" pageId="6" pageNumber="501" unit="mm" value="1.625" valueMax="1.7" valueMin="1.55">1.55–1.7 mm</quantity>
; EL 0.9– 1.0 mm; EW
<quantity id="4CAEA3DCFFD5FFADFE95F810C0F904C6" box="[302,454,1986,2010]" metricMagnitude="-4" metricUnit="m" metricValue="6.25" metricValueMax="6.5" metricValueMin="6.0" pageId="6" pageNumber="501" unit="mm" value="0.625" valueMax="0.65" valueMin="0.6">0.6–0.65 mm</quantity>
. ♀s BL
<quantity id="4CAEA3DCFFD5FFADFD99F810C38504C6" box="[546,698,1986,2010]" metricMagnitude="-3" metricUnit="m" metricValue="1.625" metricValueMax="1.7" metricValueMin="1.55" pageId="6" pageNumber="501" unit="mm" value="1.625" valueMax="1.7" valueMin="1.55">1.55–1.7 mm</quantity>
; EL 0.9–1.0 mm; EW
<quantity id="4CAEA3DCFFD5FFADFC0CF810C57004C6" box="[951,1103,1986,2010]" metricMagnitude="-4" metricUnit="m" metricValue="6.25" metricValueMax="6.5" metricValueMin="6.0" pageId="6" pageNumber="501" unit="mm" value="0.625" valueMax="0.65" valueMin="0.6">0.6–0.65 mm</quantity>
.
</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFF45C0F90201" blockId="7.[151,1437,151,2013]" pageId="7" pageNumber="502">
Colour: dorsum (
<figureCitation id="136D12BCFFD4FFACFE36FF45C0F103AC" box="[397,462,151,176]" captionStart="FIGURE 1" captionStartId="3.[151,250,1948,1970]" captionTargetBox="[179,1408,203,1904]" captionTargetId="figure@3.[160,1426,195,1922]" captionTargetPageId="3" captionText="FIGURE 1. Habitus of Mesoceration holotypes. A) M. caniplenum sp. nov.; B) M. foggoi sp. nov.; C) M. helmei sp. nov.; D) M. hirsutum sp. nov." httpUri="https://zenodo.org/record/243043/files/figure.png" pageId="7" pageNumber="502">Fig. 1</figureCitation>
C) dark piceous brown to black, lateral margins of elytra and ocelli paler. Legs and maxillary palpi yellow; last segment of maxillary palpi infuscated in apical 0.6. Venter dark piceous brown to black, with silvery hydrofuge vestiture on much of thorax and abdomen. Head somewhat paler, mentum, basistipes and palpifer yellowish-red.
</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFEF5C3C60104" blockId="7.[151,1437,151,2013]" pageId="7" pageNumber="502">Head: Labrum slightly transverse, rounded apicolaterally, with apicomedian emargination running approx. 0.5 of length. Sides of apicomedian emargination and anterior angles weakly raised. Surface weakly shining, with shallow, isodiametric to elongate microreticulation and scattered, decumbent setae, especially towards posterior margin. Frontoclypeal suture well-marked, almost linear. Entire upper surface of head dull, with strong rugulose microreticulation; meshes larger on clypeus and lateral areas of frons, smaller on central frons and vertex. Anteocellar sulci shallow, open anteriorly. Ocelli small, shining. Compound eyes relatively small, occupying 0.4 lateral margin of head, 10 ommatidia in longest series.</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFDF7C3F40041" blockId="7.[151,1437,151,2013]" pageId="7" pageNumber="502">Pronotum: Cordate, slightly transverse, broadest just in front of middle. Anterior margin arcuate over median 0.5, without hyaline border; posterior margin bisinuate around centre. Anterior angles obtusely rounded; posterior angles rectangular. Lateral margins sinuated from widest point to base; broadly marginated and moderately serrate. Surface dull, with rugulose microreticulation and shallow scattered medium punctures which are almost obscured by the microsculpture. Meshes of microreticulation similar in size to central frons. Irregular row of large punctures close to anterior and posterior margins. With 10 distinct foveae as follows: Anterior median fovea elongate; posterior median fovea elongate oval; both deepest in centre. Anterior admedian fovea shallow, oval; posterior admedian fovea shallow, elongate oval, orientated anterolaterally. Anterior and posterior adlateral foveae deep, pitlike; anterior smaller and shallower than posterior.</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFCB5C4480729" blockId="7.[151,1437,151,2013]" pageId="7" pageNumber="502">Elytra: Elongate oval, broadest at middle. Subparallel over anterior 0.5, then attenuated to truncately rounded apices. Sides narrowly explanate, especially anteriorly, entire. Punctures of elytral series relatively coarse; larger in anterior 0.5, smaller and shallower posteriorly. Discal series very weakly striate impressed in anterior 0.6. Serial punctures with fine decumbent setae arising from granules on anterior puncture margin, not usually reaching next puncture in row. Series 1 and 2 confluent at posterior declivity, and becoming closely subparallel in basal 0.3. Series 5 and 6 confluent at middle. Intervals granulate, granules bearing short decumbent setae in anterior 0.25.</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFB92C40E074B" blockId="7.[151,1437,151,2013]" box="[199,1329,1087,1112]" pageId="7" pageNumber="502">Legs: Apical protarsomere with two stout ventral setae; basal three protarsomeres with suction setae.</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFBB6C0B80761" blockId="7.[151,1437,151,2013]" box="[199,391,1124,1149]" pageId="7" pageNumber="502">Wings: Reduced.</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CFB5BC07605FC" blockId="7.[151,1437,151,2013]" pageId="7" pageNumber="502">
Venter: Mentum shining, depressed in middle, with strong elongate to isodiametric microreticulation. Long suberect golden setae along anterior margin and scattered punctures in posterior 0.5, with short, stout, recumbent setae. Submentum shining, with shallow transverse microreticulation, especially evident posteriorly. Genae shining, with transverse wrinkles centrally, and transverse microreticulation meshes laterally. Gula shining with fine transverse microreticulation. Prosternum with distinct central ridge; entire surface rugulose, with dense hydrofuge vestiture. Pronotal hypomeron broad, smooth and shining, lacking microreticulation; shallow, round fovea close to inner anterolateral angle. Mesoventrite and metaventrite with dense hydrofuge vestiture. Mesoventral plaques glabrous, forming an inverted
<collectingCountry id="F3414EA9FFD4FFACFD5DFA57C3C40680" box="[742,763,1413,1436]" name="Italy" pageId="7" pageNumber="502">Y</collectingCountry>
; admedian and adlateral ridges also present but covered in vestiture. Metaventrite with elongate median fovea over posterior 0.5; weak median ridge present anterior to furrow and paired, shallow, rounded admedian foveae anteriorly, below mesocoxae. Elytral pseudepipleurs broad, shining with traces of transverse wrinkles, narrowing to apex over posterior 0.5; epipleurs narrow, ridge-like, shining except for small patch of hydrofuge vestiture at level of mesocoxae. Abdominal ventrites 1–4 with hydrofuge vestiture; denser laterally and sparser centrally. Abdominal ventrite 5 with large semicircular shining glabrous patch, occupying 0.1 of length of ventrite laterally, 0.5 centrally; devoid of microreticulation. Irregular transverse row of medium punctures bearing decumbent setae 0.3 from apex. Abdominal ventrite 6 glabrous, shining, with weak transverse microreticulation and transverse row of medium punctures bearing decumbent setae 0.25 from apex.
</paragraph>
<paragraph id="8BE90E39FFD4FFACFF7CF93EC1F7046C" blockId="7.[151,1437,151,2013]" pageId="7" pageNumber="502">
Aedeagus: Elongate, straight in ventral view, with parameres attaching close to base and extending well beyond the apex of the main piece. Main piece with narrow, bluntly pointed apical tooth on left side, partly overhanging base of distal lobe. Distal lobe elongate, arcuate, extending beyond the apices of the parameres (
<figureCitation id="136D12BCFFD4FFACFAD4F8E6C199046C" captionStart="FIGURE 2" captionStartId="4.[151,250,1953,1975]" captionTargetBox="[234,1357,212,1925]" captionTargetId="figure@4.[206,1380,193,1931]" captionTargetPageId="4" captionText="FIGURE 2. Aedeagi of Mesoceration species. A) M. caniplenum sp. nov., holotype; B) M. foggoi sp. nov., holotype; C) M. helmei sp. nov., holotype; D) M. hirsutum sp. nov., paratype. Scale bar = 0.25 mm." httpUri="https://zenodo.org/record/243044/files/figure.png" pageId="7" pageNumber="502">Fig. 2</figureCitation>
C).
</paragraph>
<paragraph id="8BE90E39FFD4FFA3FF7CF8AEC31603C9" blockId="7.[151,1437,151,2013]" lastBlockId="8.[151,1437,151,792]" lastPageId="8" lastPageNumber="503" pageId="7" pageNumber="502">Female: Slightly broader than male, especially on elytra, which have more broadly explanate lateral margins. Elytral apex produced, acuminate, with narrow, truncately rounded apices. Abdominal ventrite 5 with broad, shining, concave glabrous patch over central 0.75, running from approx. 0.1 behind anterior margin. Impunctate and lacking microreticulation; posterior margin thickened and rounded, with long golden decumbent setae following curvature of hind margin.</paragraph>
<paragraph id="8BE90E39FFDBFFA3FF7CFF0DC1C50201" blockId="8.[151,1437,151,792]" pageId="8" pageNumber="503">
Variation:
<typeStatus id="54EDB09BFFDBFFA3FE87FF32C09603E4" box="[316,425,224,248]" pageId="8" pageNumber="503" type="paratype">Paratypes</typeStatus>
vary in size, but are otherwise relatively uniform in structure. Some covered in flocculated deposits.
</paragraph>
<paragraph id="8BE90E39FFDBFFA3FF7CFEF5C36F0107" blockId="8.[151,1437,151,792]" pageId="8" pageNumber="503">
<emphasis id="B922D22BFFDBFFA3FF7CFEF5C0F9025C" bold="true" box="[199,454,295,320]" pageId="8" pageNumber="503">Differential diagnosis</emphasis>
. A member of the
<emphasis id="B922D22BFFDBFFA3FD21FEFAC236025C" box="[666,777,296,320]" italics="true" pageId="8" pageNumber="503">endroedyi</emphasis>
group
<emphasis id="B922D22BFFDBFFA3FCE3FEFBC2A8025C" box="[856,919,297,320]" italics="true" pageId="8" pageNumber="503">sensu</emphasis>
<bibRefCitation id="EFC773C8FFDBFFA3FC26FEF5C41E025C" author="Perkins" box="[925,1313,295,320]" pageId="8" pageNumber="503" refString="Perkins, P. D. &amp; Balfour-Browne, J. (1994) A contribution to the taxonomy of aquatic and humicolous beetles of the family Hydraenidae in southern Africa. Fieldiana Zoology, 77, 1 - 159." type="journal article" year="1994">Perkins &amp; Balfour-Browne (1994)</bibRefCitation>
.
<emphasis id="B922D22BFFDBFFA3FA97FEFBC4A3025C" box="[1324,1436,296,320]" italics="true" pageId="8" pageNumber="503">
M.
<taxonomicName id="4C5675BAFFDBFFA3FAEAFEFAC4A3025C" box="[1361,1436,296,320]" class="Insecta" family="Hydraenidae" genus="Mesoceration" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="species" species="helmei" status="sp. nov.">helmei</taxonomicName>
</emphasis>
<emphasis id="B922D22BFFDBFFA3FF2CFE9EC1CB0279" bold="true" box="[151,244,332,357]" pageId="8" pageNumber="503">
<taxonomicNameLabel id="A2116F50FFDBFFA3FF2CFE9EC1CB0279" box="[151,244,332,357]" pageId="8" pageNumber="503" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
would key to
<emphasis id="B922D22BFFDBFFA3FE1FFE9FC3790278" box="[420,582,333,356]" italics="true" pageId="8" pageNumber="503">
M.
<taxonomicName id="4C5675BAFFDBFFA3FE76FE9FC3790278" authority="Perkins &amp; Balfour-Browne, 1994" authorityName="Perkins &amp; Balfour-Browne" authorityYear="1994" box="[461,582,333,356]" class="Insecta" family="Hydraenidae" genus="Mesoceration" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="species" species="concessum">concessum</taxonomicName>
</emphasis>
<bibRefCitation id="EFC773C8FFDBFFA3FDEAFE9EC2EE0278" author="Perkins" box="[593,977,332,357]" pageId="8" pageNumber="503" refString="Perkins, P. D. &amp; Balfour-Browne, J. (1994) A contribution to the taxonomy of aquatic and humicolous beetles of the family Hydraenidae in southern Africa. Fieldiana Zoology, 77, 1 - 159." type="journal article" year="1994">
Perkins &amp; Balfour-Browne,
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</bibRefCitation>
in this work, on the basis of the weak granules of the elytral intervals and the first and second elytral series being confluent at the posterior declivity. The new species differs from both this species and
<emphasis id="B922D22BFFDBFFA3FD68FE47C3CD02B0" box="[723,754,405,428]" italics="true" pageId="8" pageNumber="503">M.</emphasis>
<taxonomicName id="4C5675BAFFDBFFA3FD44FE46C53502B0" authority="Perkins, 2008" authorityName="Perkins" authorityYear="2008" box="[767,1034,404,429]" class="Insecta" family="Hydraenidae" genus="Mesoceration" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="species" species="tabulare">
<emphasis id="B922D22BFFDBFFA3FD44FE46C26202B0" box="[767,861,404,428]" italics="true" pageId="8" pageNumber="503">tabulare</emphasis>
<bibRefCitation id="EFC773C8FFDBFFA3FCD1FE46C53502B0" author="Perkins" box="[874,1034,404,429]" pageId="8" pageNumber="503" refString="Perkins, P. D. (2008) New species and new collection records of Prosthetopine water beetles from southern Africa (Coleoptera: Hydraenidae). Zootaxa, 1864, 1 - 124." type="journal article" year="2008">
Perkins,
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</bibRefCitation>
</taxonomicName>
in the relatively broader habitus, especially on the elytra, which are less elongate, more strongly curved towards the apices, and have a lower carina on the 8th interval. M.
<taxonomicName id="4C5675BAFFDBFFA3FE2AFE0DC0E302EB" box="[401,476,479,503]" class="Insecta" family="Hydraenidae" genus="Mesoceration" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="species" species="helmei" status="sp. nov.">
<emphasis id="B922D22BFFDBFFA3FE2AFE0DC0E302EB" box="[401,476,479,503]" italics="true" pageId="8" pageNumber="503">helmei</emphasis>
</taxonomicName>
<emphasis id="B922D22BFFDBFFA3FE5FFE0CC30102EB" bold="true" box="[484,574,478,503]" pageId="8" pageNumber="503">
<taxonomicNameLabel id="A2116F50FFDBFFA3FE5FFE0CC30102EB" box="[484,574,478,503]" pageId="8" pageNumber="503" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
also has much less evident pronotal punctation, and shinier elytral intervals, as well as very different male genitalia.
</paragraph>
</subSubSection>
<subSubSection id="C34C5DB2FFDBFFA3FF7CFDF4C39F01D3" pageId="8" pageNumber="503" type="distribution">
<paragraph id="8BE90E39FFDBFFA3FF7CFDF4C39F01D3" blockId="8.[151,1437,151,792]" pageId="8" pageNumber="503">
<emphasis id="B922D22BFFDBFFA3FF7CFDF4C0660123" bold="true" box="[199,345,550,575]" pageId="8" pageNumber="503">Distribution</emphasis>
. To date known only from the
<typeStatus id="54EDB09BFFDBFFA3FD62FDFAC236015C" box="[729,777,552,576]" pageId="8" pageNumber="503">type</typeStatus>
locality, a small cold stream in a shaded gulley below Sneeugatpiek in the Groote Winterhoek mountains north of Tulbagh; an area with frequent and relatively extensive winter snows. The beetles were found in a small spring pool below a cliff beside a permanent stream section, where they were abundant together with
<taxonomicName id="4C5675BAFFDBFFA3FD9EFD41C34601B6" box="[549,633,659,682]" class="Insecta" family="Dryopidae" genus="Rapnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="genus">
<emphasis id="B922D22BFFDBFFA3FD9EFD41C34601B6" box="[549,633,659,682]" italics="true" pageId="8" pageNumber="503">Rapnus</emphasis>
</taxonomicName>
sp. (
<taxonomicName id="4C5675BAFFDBFFA3FD0DFD40C20C01B7" box="[694,819,658,683]" class="Insecta" family="Dryopidae" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="family">Dryopidae</taxonomicName>
).
<taxonomicName id="4C5675BAFFDBFFA3FCF3FD41C1F001D3" authority="Perkins &amp; Balfour-Browne, 1994" authorityName="Perkins &amp; Balfour-Browne" authorityYear="1994" class="Insecta" family="Hydraenidae" genus="Mesoceration" kingdom="Animalia" order="Coleoptera" pageId="8" pageNumber="503" phylum="Arthropoda" rank="species" species="apicalum">
<emphasis id="B922D22BFFDBFFA3FCF3FD41C56A01B7" box="[840,1109,659,683]" italics="true" pageId="8" pageNumber="503">Mesoceration apicalum</emphasis>
<bibRefCitation id="EFC773C8FFDBFFA3FBE4FD40C1F001D3" author="Perkins" pageId="8" pageNumber="503" refString="Perkins, P. D. &amp; Balfour-Browne, J. (1994) A contribution to the taxonomy of aquatic and humicolous beetles of the family Hydraenidae in southern Africa. Fieldiana Zoology, 77, 1 - 159." type="journal article" year="1994">Perkins &amp; Balfour-Browne, 1994</bibRefCitation>
</taxonomicName>
was abundant in the nearby stream itself.
</paragraph>
</subSubSection>
<subSubSection id="C34C5DB2FFDBFFA3FF7CFD08C410000B" pageId="8" pageNumber="503" type="etymology">
<paragraph id="8BE90E39FFDBFFA3FF7CFD08C410000B" blockId="8.[151,1437,151,792]" pageId="8" pageNumber="503">
<emphasis id="B922D22BFFDBFFA3FF7CFD08C07901EF" bold="true" box="[199,326,730,755]" pageId="8" pageNumber="503">Etymology</emphasis>
. Named after the South African botanist Nick Helme, who has provided me with numerous valuable suggestions on areas to sample in the Cape, and was present when the
<typeStatus id="54EDB09BFFDBFFA3FBAAFCD2C57E0004" box="[1041,1089,768,792]" pageId="8" pageNumber="503">type</typeStatus>
series was collected.
</paragraph>
</subSubSection>
</treatment>
</document>
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