treatments-xml/data/B2/47/58/B2475873489A5D94B78BCCF07AE3771A.xml

<document id="5EB57293E0704B7FB66093AC1D7A0A48" ID-CLB-Dataset="305515" ID-DOI="10.3897/zookeys.1219.125754" ID-GBIF-Dataset="791c9836-16f6-4fe4-9a1e-5443b3c6bbfd" ID-ZooBank="4281D66E-AE5B-4F65-B5C1-92D02B3BFBF6" ID-publisher-id="125754" URI-arpha="E9C71FDE-4938-59E2-AB8A-FBD37F4AB35D" URI-zoobank="http://zoobank.org/4281D66E-AE5B-4F65-B5C1-92D02B3BFBF6" XM.bibliography_approvedBy="admin" XM.materialsCitations_approvedBy="admin" XM.treatmentCitations_approvedBy="admin" article-type="research-article" checkinTime="1732719999428" checkinUser="pensoft" docAuthor="Jiang, Ri-Xin, Wu, Ping-Lan &amp; Chen, Xiang-Sheng" docDate="2024" docId="B2475873489A5D94B78BCCF07AE3771A" docLanguage="en" docName="ZooKeys 1219: 73-97" docOrigin="ZooKeys 1219" docSource="https://zookeys.pensoft.net/article/125754/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.generic" docStyleName="PensoftTaxPub.0000.journal_article.generic" docTitle="Grouvellinus loong Jiang, Wu &amp; Chen, 2024, sp. nov." docType="treatment" docVersion="2" dtd-version="3.0" lastPageNumber="97" masterDocId="E9C71FDE493859E2AB8AFBD37F4AB35D" masterDocTitle="Five new species of the genus Grouvellinus Champion, 1923 from Guizhou Province, China (Coleoptera, Elmidae)" masterLastPageNumber="97" masterPageNumber="73" pageNumber="73" updateTime="1732743644050" updateUser="ExternalLinkService">
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<mods:title id="DE391CDE8C53E2F8690C2EAB0D2F2E1E">Five new species of the genus Grouvellinus Champion, 1923 from Guizhou Province, China (Coleoptera, Elmidae)</mods:title>
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<mods:namePart id="B289553500FF96587E5E1B3439CB3CD5">Jiang, Ri-Xin</mods:namePart>
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<mods:affiliation id="A080923B5DA2382C734B7DECA7AD47B1">Institute of Entomology, Guizhou University, Guiyang 550025, Guizhou, China &amp; The Provincial Special Key Laboratory for Development and Utilization of Insect Resources of Guizhou, Guizhou University, Guiyang, 550025, Guizhou, China</mods:affiliation>
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<mods:namePart id="A2CE57292A7F2ADDCF567566C662DB4B">Wu, Ping-Lan</mods:namePart>
<mods:nameIdentifier id="6FECA39129575E49A1CED878A66F1EFD" type="ORCID">https://orcid.org/0009-0003-7089-7861</mods:nameIdentifier>
<mods:affiliation id="189C401B2A23A0652927E4D91B39BC44">The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region, Guiyang 550025, Guizhou, China</mods:affiliation>
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<mods:namePart id="594C76E2EBCD25A0F0D84E6B0750015C">Chen, Xiang-Sheng</mods:namePart>
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<mods:affiliation id="F84D70395EACE26D769F3DC32D3B3EFB">Institute of Entomology, Guizhou University, Guiyang 550025, Guizhou, China &amp; The Provincial Special Key Laboratory for Development and Utilization of Insect Resources of Guizhou, Guizhou University, Guiyang, 550025, Guizhou, China</mods:affiliation>
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<mods:date id="EBA253862D9DF91496BBD9D2F4E9451A">2024</mods:date>
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<treatment id="B2475873489A5D94B78BCCF07AE3771A" ID-DOI="http://doi.org/10.5281/zenodo.14232173" ID-GBIF-Taxon="247601298" ID-Zenodo-Dep="14232173" ID-arpha="B2475873-489A-5D94-B78B-CCF07AE3771A" ID-zoobank="https://zoobank.org/134104C8-B9C1-4B30-BCF1-B009441214C4" LSID="urn:lsid:plazi:treatment:B2475873489A5D94B78BCCF07AE3771A" LSID-ZBK="urn:lsid:zoobank.org:act:134104C8-B9C1-4B30-BCF1-B009441214C4" httpUri="http://treatment.plazi.org/id/B2475873489A5D94B78BCCF07AE3771A" scope_family="Elmidae" scope_order="Coleoptera">
<subSubSection id="05C352961CAEBEE541A1DD9C6AC9A838" type="nomenclature">
<paragraph id="300D76FE5D41D7CF2A83200A4ED0AEA0">
<taxonomicName id="3B75476D2B0FE4CEBAA537BB7D95E53E" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="0F32156C4762808E54E5E6E27300AB40" italics="true">Grouvellinus loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="C03CBC7D4862907272E655D1A9E30E13" rank="species">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="C7618FBB7744EE3DA18EF431FFE51179" type="description">
<paragraph id="482369BAD55CC1DFB77CD79CC0AA66FA">
<figureCitation id="80EE50A9B96861AD705CA89C585DC314" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Dorsal habitus of Grouvellinus species, holotypes A G. loong sp. nov. B G. buyi sp. nov. C G. wangmoensis sp. nov. D G. lihaitaoi sp. nov. E G. muyinlini sp. nov. Scale bar: 0.5 mm." figureDoi="10.3897/zookeys.1219.125754.figure1" httpUri="https://binary.pensoft.net/fig/1184213">Figs 1 A</figureCitation>
, 
<figureCitation id="C0CBAF6DB213B281F59307574A14D2DC" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2</figureCitation>
, 
<figureCitation id="EFAF7CF9E1EA6CC276A2D54840E42785" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Aedeagus of Grouvellinus loong sp. nov., paratype A ventral view B lateral view C dorsal view D apex of median lobe and parameres. Scale bars: 0.05 mm (D); 0.1 mm (A – C)." figureDoi="10.3897/zookeys.1219.125754.figure3" httpUri="https://binary.pensoft.net/fig/1184215">3</figureCitation>
, 
<figureCitation id="BBB67E669A5322B08936A0909CEA9641" captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Ovipositor of Grouvellinus species A, F G. loong sp. nov., paratype B, G G. buyi sp. nov., paratype C, H G. wangmoensis sp. nov., paratype D, I G. lihaitaoi sp. nov., paratype E, J G. muyinlini sp. nov., paratype. Scale bars: 0.1 mm." figureDoi="10.3897/zookeys.1219.125754.figure12" httpUri="https://binary.pensoft.net/fig/1184224">12 A, F</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="SECID0EHKAC" type="material">
<paragraph id="11C84061879633AA540CAAD05CD916DC">
<heading id="5BA1F301EE86CEC7AAAC0CCA2A116410" reason="title">Material examined.</heading>
</paragraph>
<paragraph id="A01E8CF3066DD80E8B19966E004CE4A9">
(42 exs: 
<specimenCount id="7236FE129E6B396EDB4AE16E244BA40F" count="21" type="male">21 ♂♂</specimenCount>
, 
<specimenCount id="A46E32FFA40872EEB8F16831F6FBEFB7" count="21" type="female">21 ♀♀</specimenCount>
): 
<materialsCitation id="23229C88CCEBF36A631D119A1E7E5343" ID-GBIF-Occurrence="4985326304" collectingDate="2022-11-09" collectionCode="GUGC" collectorName="Jiang Ri-Xin" country="China" county="Qiannan Buyi and Miao Autonomous Prefecture" elevation="6" latitude="25.328611" location="Xiangshui Village" longLatPrecision="21" longitude="106.641106" municipality="Luokun Town" specimenCount="1" specimenCount-male="1" stateProvince="Guizhou" typeStatus="holotype">
<emphasis id="95FD5851D2A21ABE91CB980D97DCF459" bold="true">
<emphasis id="A8028E0B0B7D4B8B05197CFF5545E1F9" bold="true" italics="true">
<typeStatus id="2B3398DE3ADF0F27A9BD7E8AD99D8256" type="holotype">Holotype</typeStatus>
</emphasis>
: 
<collectingCountry id="2F81099533733A0FAE96A4170FC932D8" name="China">China</collectingCountry>
</emphasis>
• 
<specimenCount id="C92A67286020009E572CAA5A95D6356B" count="1" type="male">♂</specimenCount>
, labeled ‘ China: 
<collectingRegion id="F633A9D431DB836AB59B5A05358099EA" country="China" name="Guizhou">Guizhou</collectingRegion>
, 
<collectingCounty id="4326F5FDB33709F33533ABDE7928C782">Qiannan Buyi and Miao Autonomous Prefecture</collectingCounty>
(黔南布依族苗族自治州), 
<collectingCounty id="15B5C8E1DCBB17707EC6E09F9B208A7C">Luodian County</collectingCounty>
(罗甸县), 
<collectingMunicipality id="DCC1403FEE7AEDA3124BCBB031CAF4C8">Luokun Town</collectingMunicipality>
(罗悃镇), 
<location id="E7C03A335852C1F670BB5BF213972D92" LSID="urn:lsid:plazi:treatment:B2475873489A5D94B78BCCF07AE3771A:E7C03A335852C1F670BB5BF213972D92" country="China" county="Qiannan Buyi and Miao Autonomous Prefecture" latitude="25.328611" longLatPrecision="21" longitude="106.641106" municipality="Luokun Town" name="Xiangshui Village" stateProvince="Guizhou">Xiangshui Village</location>
(响水村), 
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EUKAC" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[106.641111,25.328611]}">
<geoCoordinate id="CA47477558FD602C93735D159B4C6981" degrees="25" direction="north" minutes="19" orientation="latitude" precision="15" seconds="43" value="25.328611">25°19'43&quot;N</geoCoordinate>
, 
<geoCoordinate id="4BB264300600D867057DD96C062DC56F" degrees="106" direction="east" minutes="38" orientation="longitude" precision="15" seconds="28" value="106.641106">106°38'28&quot;E</geoCoordinate>
</named-content>
, H: 666.10 ± 
<quantity id="AFB2C4293B12A8FC8AF4FD2E0ECF9D96" metricMagnitude="0" metricUnit="m" metricValue="6.4" unit="m" value="6.4">
<elevation id="52E08BA9207ED36FD89905409FE91A02" metricMagnitude="0" metricUnit="m" metricValue="6.4" unit="m" value="6.4">6.40 m</elevation>
</quantity>
, 
<date id="B872D560442A0D16FA895E49CAE7D751" value="2022-11-09">
<collectingDate id="8238179B50DA9DCFF2197EE13A29F0F3" value="2022-11-09">09. XI. 2022</collectingDate>
</date>
, 
<collectorName id="A2ED9E3741535EF4CAFDB0A418933DC5">Jiang Ri-Xin</collectorName>
leg. ’ (
<abbrev id="ABBRID0EZKAC" xlink_title="Institute of Entomology, Guizhou University">
<collectionCode id="8417C4D24F78566EEDE603EFF9CE2100">GUGC</collectionCode>
</abbrev>
)
</materialsCitation>
. 
<materialsCitation id="11BED4C35604B84EACAFBF857F672646" ID-GBIF-Occurrence="4985326301" collectingDate="2022-11-09" collectionCode="GUGC" collectorName="Jiang Ri-Xin" country="China" county="Qiannan Buyi and Miao Autonomous Prefecture" elevation="6" latitude="25.328611" location="China" longLatPrecision="21" longitude="106.641106" municipality="Luokun Town" specimenCount="41" specimenCount-female="21" specimenCount-male="20" stateProvince="Guizhou" typeStatus="paratype">
<emphasis id="98A26A46B120E7EA6C2974CDEF628A3F" bold="true">
<emphasis id="AFA434021DC5ABE15DB9DE0C17722C14" bold="true" italics="true">
<typeStatus id="91CF9868FDA24DB1DB289F9920F43486" type="paratype">Paratypes</typeStatus>
</emphasis>
: 
<collectingCountry id="A10A47B3285074814482F9507953B317" name="China">China</collectingCountry>
</emphasis>
• 
<specimenCount id="39F65CFC37C709B8C7C6A2C93C5D62BD" count="20" type="male">20 ♂♂</specimenCount>
, 
<specimenCount id="7D81A8AEAF75CCBB9EC044AFF93518EA" count="21" type="female">21 ♀♀</specimenCount>
, with same label data as the holotype (
<abbrev id="ABBRID0EBLAC" xlink_title="Institute of Entomology, Guizhou University">
<collectionCode id="E4EEE41DB0864929229CD519E59F9A1A">GUGC</collectionCode>
</abbrev>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EFLAC" type="diagnosis">
<paragraph id="C66FEAB941E8190CF24E9F292DFF2618">
<heading id="D17AB8F742E4512C566D676DF8223935" reason="title">Diagnosis.</heading>
</paragraph>
<paragraph id="A664099997339D76C03717E427B5A0A8">Body obovate; elytra dark brown, with weak cupreous metallic luster, each elytron with yellowish brown spot at base and near apex. Elytral intervals III, V, VII, and VIII carinated; carinae granulated, those on interval III short, extending from base to ~ 1 / 3 of elytral length; other carinae long and extending from base nearly to elytral apex. Lateral margins of elytra granulated. Aedeagus with median lobe constricted near middle and in apical 1 / 3; apex narrowed, subacute. Parameres nearly as long as median lobes, strongly narrowed at basal 1 / 3, apex rounded, lateral portion with long setae at apical 1 / 3.</paragraph>
</subSubSection>
<subSubSection id="SECID0EKLAC" type="description">
<paragraph id="DA0FE9872547D577C54DAEB20E0CE7EB">
<heading id="81A89D2419E5BAD2584E18A084E16AF0" reason="title">Description.</heading>
</paragraph>
<paragraph id="8273389EC7F8E0651C3AC1F0B499BFD0">
<emphasis id="FEFBB65C2A915E7A6D6A4BE5B4757CBE" bold="true">Male.</emphasis>
Body obovate (Fig. 
<figureCitation id="B3F83F92212258EBD82ED5FD0F7D4491" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Dorsal habitus of Grouvellinus species, holotypes A G. loong sp. nov. B G. buyi sp. nov. C G. wangmoensis sp. nov. D G. lihaitaoi sp. nov. E G. muyinlini sp. nov. Scale bar: 0.5 mm." figureDoi="10.3897/zookeys.1219.125754.figure1" httpUri="https://binary.pensoft.net/fig/1184213">1 A</figureCitation>
); head, pronotum and elytra black or dark brown, with weak cupreous metallic luster; femora and tibiae black; tarsi and antenna reddish brown; elytra with four reddish brown spots. Plastron area confined to head except for frons, vertex, and clypeus, lateral portions of prosternum, ninth elytral interval and epipleura, lateral portions of mesosternum, metaventrite, abdomen, femora, and tibia.
</paragraph>
<caption id="064203F4736F205A7B9C26735CAA59EE" ID-DOI="10.3897/zookeys.1219.125754.figure1" ID-arpha="DDBA1A30-A321-5BB9-917D-3BF2DE2E9548" httpUri="https://binary.pensoft.net/fig/1184213" startId="F1">
<paragraph id="83AA3D1F823E42C7D744E5B4C5A98620">
<label id="EEC24487C0B909D9C620CC9FCA4F5998">Figure 1.</label>
</paragraph>
<paragraph id="D5FF8BF1A3002360546534BB6ECA273F">
Dorsal habitus of 
<taxonomicName id="11415E2B795EE40E6D3D2B3F60F15AF3">
<emphasis id="F3A48D6066A0223C82819A880D2C363A" italics="true">Grouvellinus</emphasis>
species
</taxonomicName>
, holotypes 
<emphasis id="D30B9280CFBE561B5C604BEED5B7DA2D" bold="true">A</emphasis>
<taxonomicName id="3313008E315924D739911F481AAB101C" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="F9539A24A798B03B82EFAA7539C280D7" italics="true">G. loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D93D52F2988A9A239107B57580FE169C" rank="species">sp. nov.</taxonomicNameLabel>
<emphasis id="1695845570E1DAD222665C42E201FB41" bold="true">B</emphasis>
<taxonomicName id="0AB580D8DBCCF45B18C45397BB16F839" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="buyi" status="sp. nov.">
<emphasis id="F01F7FE6B6C6494055089F7B4979E3A3" italics="true">G. buyi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="1871666176594A2A8991615E2F670EFE" rank="species">sp. nov.</taxonomicNameLabel>
<emphasis id="D9C6A56AA11BD1A75FE564242E2ED898" bold="true">C</emphasis>
<taxonomicName id="42D6F87FE391326781C83607F1404088" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="wangmoensis" status="sp. nov.">
<emphasis id="81106A8BFBD36DD2401CE68D9E8DEB85" italics="true">G. wangmoensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4814D6ED8F362BE58FD33C3A94E37925" rank="species">sp. nov.</taxonomicNameLabel>
<emphasis id="77194733FAC39BC6F4E52B09A939AF06" bold="true">D</emphasis>
<taxonomicName id="EDC0021AD311FC3687803F44CCABE922" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="lihaitaoi" status="sp. nov.">
<emphasis id="10DA2F4CFA418FAEFB3CA066A6BEC1AF" italics="true">G. lihaitaoi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="72144E00763DB7B99A3A95E5305FCB16" rank="species">sp. nov.</taxonomicNameLabel>
<emphasis id="D7E5705FCD70718EA0AF4D74EBA941CE" bold="true">E</emphasis>
<taxonomicName id="C99E41734CFA5E13C469155D5CAE850F" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="muyinlini" status="sp. nov.">
<emphasis id="DD2E872C78C79E08162DBBA18CA5E499" italics="true">G. muyinlini</emphasis>
</taxonomicName>
<taxonomicNameLabel id="34E11D0B221A631CEE98A4DC7B521432" rank="species">sp. nov.</taxonomicNameLabel>
Scale bar: 0.5 mm.
</paragraph>
</caption>
<paragraph id="800F619ACAA5390EAC23D239CB7C636C">
Head (Fig. 
<figureCitation id="53A9C8C6C8EF4CDF6ADA48DF331EE77D" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 A</figureCitation>
) wider than long, dorsal surface with dense short setae (except discal part) and large round punctures, longer setae sparsely and finely located at dorsal surface. Clypeus evenly punctate with large round punctures and with sparse long setae. Labrum transverse, slightly narrower than clypeus, surface distinctly microreticulated, apical 1 / 2 covered with sparse long setae, lateral margins with long bristles, apical margin rounded.
</paragraph>
<caption id="4735F21BFBCEC1BFBAD826302B36AC15" ID-DOI="10.3897/zookeys.1219.125754.figure2" ID-arpha="4B1DF67B-A368-5A19-96A2-DED39240A059" httpUri="https://binary.pensoft.net/fig/1184214" startId="F2">
<paragraph id="5C6DD17A4B0E9402C61FD0310158B64A">
<label id="93EF96039C8A230026F501EB86FDA33D">Figure 2.</label>
</paragraph>
<paragraph id="03CC524BEF1538FCA06952E3243E5432">
Diagnostic features of 
<taxonomicName id="39DD0732128486530EDA0A279C79DEC3" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="F0B37DA5CDAE6F4DA43268CBAAE86655" italics="true">Grouvellinus loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="B4F013E1197F8D3CE3D8B8311B6FA1D7" rank="species">sp. nov.</taxonomicNameLabel>
, paratype 
<emphasis id="2EFAFB68F6BE7892BDAB19E2C5FB1E44" bold="true">A</emphasis>
head, dorsal view 
<emphasis id="B9D1143828C9005A15D5EB12C304E580" bold="true">B</emphasis>
pronotum, dorsal view 
<emphasis id="99AD1AC4D263D006208DE3CCFA334FCD" bold="true">C</emphasis>
elytra, dorsal view 
<emphasis id="977076F7622AA353ABB0D6BA172EB25D" bold="true">D</emphasis>
ventral habitus 
<emphasis id="D1D6A9D17198A1395D3C51228EC39DC3" bold="true">E</emphasis>
metatibia, male 
<emphasis id="0695686DE12906B3F4A73EBC3AED8388" bold="true">F</emphasis>
same, female. Scale bars: 0.25 mm (
<emphasis id="D195821452D340AA57587513520BC1B7" bold="true">A, B, E, F</emphasis>
); 0.5 mm (
<emphasis id="C2BFE9D62615A0401DB33E5F089B976E" bold="true">C, D</emphasis>
).
</paragraph>
</caption>
<paragraph id="EB1302C68115E4CB6B62BB19BE92516C">
Pronotum (Fig. 
<figureCitation id="2917EBB8BAA656D21DC589A493817578" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 B</figureCitation>
) wider than long, widest at base, narrowed anteriad. Disc sparsely punctured on admesal portion, punctures with longer adpressed setae, intervals glabrous, shiny; longitudinal mesal portion with dense small punctures along posterior 2 / 3, impression absent; surface densely granulated. Anterior margin arcuate, anterior angles distinctly produced and acutangular with subacute apex; pronotal margins finely curved. Basal margin trisinuate, posterior angles acutangular, with apex rounded. Sublateral carinae distinct, extending from base to ~ 1 / 2 length of pronotum; basal 1 / 2 straight, near parallel; apical 1 / 2 curved; each side of sublateral carinae with a shallow and indistinct oblique impression, extending from apical end of carina to near anterior angle. Prosternal process (Fig. 
<figureCitation id="7F3B9D9DD78E0230C46F295B648A001F" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 D</figureCitation>
) with weakly curved apex, surface densely covered with large punctures.
</paragraph>
<paragraph id="3792A5EC606FCBA526AF591507571195">
Scutellum (Fig. 
<figureCitation id="C44014EB237A3063EA495B1603F31539" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 B</figureCitation>
) subtriangular, wider than long, widest near middle; surface covered with large punctures and each puncture bearing a short seta; lateral margins finely curved, apex obtuse.
</paragraph>
<paragraph id="0BC6F8EDBE956829BD9FC5295CA05CA6">
Elytra (Fig. 
<figureCitation id="A745A0AA6737FD548939AD858284FFDB" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 C</figureCitation>
)&gt; 1.5 × as long as wide, widest at base, narrowed to apex. Granulate carinae on intervals III, V, VII, and VIII; carina on interval III short, ~ 1 / 3 length of elytra; other carinae long, extending from base of elytra to near apex. Lateral margins of elytra granulated. Each elytron with two reddish brown spots, one at base and another one near apex.
</paragraph>
<paragraph id="B2C8F22F280CD6A78B098F26DB9500E9">
Metaventrite (Fig. 
<figureCitation id="B6962A18A16AFAFDC92A158394666443" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 D</figureCitation>
), surface rough with sparse long setae and large round punctures at disc. Median sulcus long but indistinct, extending from posterior margin to anterior 1 / 4, basal 1 / 4 wide and deep, apical 3 / 4 thin and shallow. Lateral sides of disc with series of elliptical shallow impression.
</paragraph>
<paragraph id="53058734556AE1D06F8F3CC6EC03160B">
<emphasis id="98A5C460272A303149A07A5C869D69DF" bold="true">
<emphasis id="1836F7369C9545CB84C52FBEAB2AF6A5" bold="true" italics="true">Abdomen</emphasis>
.
</emphasis>
Middle regions of ventrites I – IV and anterior part of ventrite V punctured (Fig. 
<figureCitation id="79E1CCC0C047303401A1F3AA596FF233" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 D</figureCitation>
), covered with sparse large round punctures, each puncture bearing a long seta. Other parts of abdomen (Fig. 
<figureCitation id="3524876FB5A49BDAB562AA11D5800F5B" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 D</figureCitation>
) covered with plastron and mixed with sparse long setae. Apex of ventrite V rounded. Ventrite I with well-developed pair of admedian carinae, straight, extending from base to apex.
</paragraph>
<paragraph id="D9C1006CABE1F61B2807DB6351385219">
Legs simple, surface granulated; femora widened, surface with plastron; inner side of tibiae with cleaning fringes; metatibiae (Fig. 
<figureCitation id="34640EA55C591C2DD2767319C0B95C57" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 E</figureCitation>
) distinctly narrowed near apex; tarsi slightly shorter tibiae; tarsal claws simple.
</paragraph>
<paragraph id="DCE7C24E2E5E759ED8A8FA04502C963B">
<emphasis id="A571868E19DB23012B174E9D60FD8B60" bold="true">
<emphasis id="EC4AF3B075F57E89E886E5DFF5AF6A00" bold="true" italics="true">Genitalia</emphasis>
.
</emphasis>
Aedeagus (Fig. 
<figureCitation id="CAF05E8F6E9CA3D746DD8E2D6F39C11B" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Aedeagus of Grouvellinus loong sp. nov., paratype A ventral view B lateral view C dorsal view D apex of median lobe and parameres. Scale bars: 0.05 mm (D); 0.1 mm (A – C)." figureDoi="10.3897/zookeys.1219.125754.figure3" httpUri="https://binary.pensoft.net/fig/1184215">3 A – D</figureCitation>
), long and wide, symmetrical; median lobe slightly surpasses parameres, narrowed near middle and in apical 1 / 3, apex narrowed, subacute. Parameres (Fig. 
<figureCitation id="4D93D17E0501BAA85B1E36777594307A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Aedeagus of Grouvellinus loong sp. nov., paratype A ventral view B lateral view C dorsal view D apex of median lobe and parameres. Scale bars: 0.05 mm (D); 0.1 mm (A – C)." figureDoi="10.3897/zookeys.1219.125754.figure3" httpUri="https://binary.pensoft.net/fig/1184215">3 D</figureCitation>
) strongly narrowed at basal 1 / 3, with apical portion narrowed; apical 2 / 5 covered with long setae.
</paragraph>
<caption id="F722D1B21AEA1BD0BFD7853E7A1D1BFA" ID-DOI="10.3897/zookeys.1219.125754.figure3" ID-arpha="0EDF7EB1-8BF8-576C-BBA3-7CFCA472B01F" httpUri="https://binary.pensoft.net/fig/1184215" startId="F3">
<paragraph id="97EE7FC4B8FEB2FD6F9AF7A15DF2C074">
<label id="E4718DC1494C71AB66615C63941E9E7A">Figure 3.</label>
</paragraph>
<paragraph id="5FE28947301935BED248B791049E7C51">
Aedeagus of 
<taxonomicName id="BE591EAF385A46EF5B1774ACD733E13A" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="5695280E35D75B6A433A4E602F36E8E3" italics="true">Grouvellinus loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="1247ECC8CD7799183215BAAE85ECAF79" rank="species">sp. nov.</taxonomicNameLabel>
, paratype 
<emphasis id="6E119D21A02F3DFB100E5F51DADD7DA5" bold="true">A</emphasis>
ventral view 
<emphasis id="E91FB48BA967E67940DEC9C085266616" bold="true">B</emphasis>
lateral view 
<emphasis id="E8F75F06B0C2A5D15C0649581F7F7993" bold="true">C</emphasis>
dorsal view 
<emphasis id="6A35338F57520D224D5AF8851EA0727C" bold="true">D</emphasis>
apex of median lobe and parameres. Scale bars: 0.05 mm (
<emphasis id="423EF2CA825E8CE9776EEB84B1198D63" bold="true">D</emphasis>
); 0.1 mm (
<emphasis id="0C99AADE22384BBDF0992CD9AA9F6401" bold="true">A – C</emphasis>
).
</paragraph>
</caption>
<paragraph id="BE77A8531D2979E5F8BC47E06F8D878A">
<emphasis id="8B06B8016CA07FAD3C7CDA5FCA003B74" bold="true">Female.</emphasis>
Externally similar to the male, averagely larger, metatibiae (Fig. 
<figureCitation id="FDDF0168634DCE16174F742DB6696FDC" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D)." figureDoi="10.3897/zookeys.1219.125754.figure2" httpUri="https://binary.pensoft.net/fig/1184214">2 F</figureCitation>
) not narrowed near apex. Ovipositor as in Figs 
<figureCitation id="B626B1270B9DAFD2075957D3581F9AA6" captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Ovipositor of Grouvellinus species A, F G. loong sp. nov., paratype B, G G. buyi sp. nov., paratype C, H G. wangmoensis sp. nov., paratype D, I G. lihaitaoi sp. nov., paratype E, J G. muyinlini sp. nov., paratype. Scale bars: 0.1 mm." figureDoi="10.3897/zookeys.1219.125754.figure12" httpUri="https://binary.pensoft.net/fig/1184224">12 A, F</figureCitation>
. Stylus short and narrow, weakly curved, ~ 1 / 6 as long as distal portion of coxite. Coxite long, with apex distinctly expanded, roundly broadened at outer margin, apex with several short and curved sensilla. Distal portion of coxite nearly straight, surface with sparse, very short and acute setae. Proximal portion of coxite short, longer than 1 / 3 length of distal portion, surface with sparse, very short and acute setae. Valvifers slightly shorter than coxite, longitudinal baculum curved.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EKDAE" type="description">
<paragraph id="270A22BA38B5F30BB172545BFB5CB180">
<heading id="30AC88A868D7AB7D9E9F5BDECF8FF291" reason="title">Measurements.</heading>
</paragraph>
<paragraph id="2AD5AC4E45BB94FC13BA0639D81A8524">
<emphasis id="B1ACE2BCF923802E888F601B2C787B05" bold="true">Male</emphasis>
(
<emphasis id="B5F6BE10EEBB180488FEB8AD0BAEDFFA" italics="true">n</emphasis>
= 10): 
<abbrev id="ABBRID0EUDAE" xlink_title="length of body, as the sum PL + EL">CL</abbrev>
: 
<quantity id="48AA23CAE50B02F709BC2A1F4417BDD6" metricMagnitude="-3" metricUnit="m" metricValue="1.85" metricValueMax="1.89" metricValueMin="1.81" unit="mm" value="1.85" valueMax="1.89" valueMin="1.81">1.81–1.89 mm</quantity>
(1.85 ± 0.03); 
<abbrev id="ABBRID0EYDAE" xlink_title="length of pronotum along the midline">PL</abbrev>
: 
<quantity id="253BD94B876F82DFC76B3C9FB57A5B75" metricMagnitude="-4" metricUnit="m" metricValue="5.25" metricValueMax="5.4" metricValueMin="5.1" unit="mm" value="0.525" valueMax="0.54" valueMin="0.51">0.51–0.54 mm</quantity>
(0.52 ± 0.01), 
<abbrev id="ABBRID0E3DAE" xlink_title="maximum width of pronotum">PW</abbrev>
: 
<quantity id="834B707BC8C2530996922190AED31E60" metricMagnitude="-4" metricUnit="m" metricValue="7.1" metricValueMax="7.4" metricValueMin="6.8" unit="mm" value="0.71" valueMax="0.74" valueMin="0.68">0.68–0.74 mm</quantity>
(0.70 ± 0.02); 
<abbrev id="ABBRID0EAEAE" xlink_title="length of elytra along the suture">EL</abbrev>
: 
<quantity id="BDB4F0C98CF969898327CC63BF285199" metricMagnitude="-3" metricUnit="m" metricValue="1.325" metricValueMax="1.35" metricValueMin="1.3" unit="mm" value="1.325" valueMax="1.35" valueMin="1.3">1.30–1.35 mm</quantity>
(1.33 ± 0.02), 
<abbrev id="ABBRID0EEEAE" xlink_title="maximum width of elytra">EW</abbrev>
: 
<quantity id="7845744C2D4263B3C5A95455DE6254F0" metricMagnitude="-4" metricUnit="m" metricValue="9.15" metricValueMax="9.3" metricValueMin="9.0" unit="mm" value="0.915" valueMax="0.93" valueMin="0.9">0.90–0.93 mm</quantity>
(0.91 ± 0.01).
</paragraph>
<paragraph id="519A982341E5CED023C7AB3637919B67">
<emphasis id="2E2F5C5174BD2A5B049AC694446E5168" bold="true">Female</emphasis>
(
<emphasis id="19AEE86D84200D393B87A02A9561A5B5" italics="true">n</emphasis>
= 10): 
<abbrev id="ABBRID0EOEAE" xlink_title="length of body, as the sum PL + EL">CL</abbrev>
: 
<quantity id="D99E41DD581CF6E9F21E4C70DEF642BD" metricMagnitude="-3" metricUnit="m" metricValue="1.88" metricValueMax="2.08" metricValueMin="1.68" unit="mm" value="1.88" valueMax="2.08" valueMin="1.68">1.68–2.08 mm</quantity>
(1.90 ± 0.12); 
<abbrev id="ABBRID0ESEAE" xlink_title="length of pronotum along the midline">PL</abbrev>
: 
<quantity id="B18F2EB19A70C5F17564746E65B0A852" metricMagnitude="-4" metricUnit="m" metricValue="5.6" metricValueMax="6.3" metricValueMin="4.9" unit="mm" value="0.56" valueMax="0.63" valueMin="0.49">0.49–0.63 mm</quantity>
(0.56 ± 0.05), 
<abbrev id="ABBRID0EWEAE" xlink_title="maximum width of pronotum">PW</abbrev>
: 
<quantity id="CFF85C064D5468E473CBDAEBD0A1848B" metricMagnitude="-4" metricUnit="m" metricValue="7.1" metricValueMax="8.0" metricValueMin="6.2" unit="mm" value="0.71" valueMax="0.8" valueMin="0.62">0.62–0.80 mm</quantity>
(0.71 ± 0.06); 
<abbrev id="ABBRID0E1EAE" xlink_title="length of elytra along the suture">EL</abbrev>
: 
<quantity id="BDE508BCFFA6A265E9F75AFF3E12C369" metricMagnitude="-3" metricUnit="m" metricValue="1.325" metricValueMax="1.45" metricValueMin="1.2" unit="mm" value="1.325" valueMax="1.45" valueMin="1.2">1.20–1.45 mm</quantity>
(1.35 ± 0.09), 
<abbrev id="ABBRID0E5EAE" xlink_title="maximum width of elytra">EW</abbrev>
: 
<quantity id="E36F8DD2A52714257C8B9FD777142163" metricMagnitude="-4" metricUnit="m" metricValue="9.1" metricValueMax="9.6" metricValueMin="8.6" unit="mm" value="0.9099999999999999" valueMax="0.96" valueMin="0.86">0.86–0.96 mm</quantity>
(0.91 ± 0.04).
</paragraph>
</subSubSection>
<subSubSection id="SECID0ECFAE" type="distribution">
<paragraph id="9785DCA045EDBBA6ED0CFBC433F891A5">
<heading id="9779158AB755F1FEEF80A3BD4E2FF132" reason="title">Distribution.</heading>
</paragraph>
<paragraph id="88EBB35A2FD71999C1BAB00EE737D830">
<collectingCountry id="31BCF9277AA3D2F37D815F4DE7A7C61F" name="China">China</collectingCountry>
(
<collectingRegion id="3397AC2AFD84D33D26D2CF1B13CE28A2" country="China" name="Guizhou">Guizhou</collectingRegion>
).
</paragraph>
</subSubSection>
<subSubSection id="SECID0EHFAE" type="biology">
<paragraph id="CF1AEC1F3FB999C10968C51651563547">
<heading id="3064C588A6DC5419BEA03B63744BE82B" reason="title">Biology.</heading>
</paragraph>
<paragraph id="8BCE6C5B51B9EA632051FB0E77C3D9AE">
All adults were collected from submerged stone in small ravine stream (Fig. 
<figureCitation id="61DB790F5E031BF629D799F00C20BC1F" captionStart="Figure 14" captionStartId="F14" captionText="Figure 14. Habitats of Grouvellinus species A general environment of the type locality of G. loong sp. nov. B same, microenvironment C living adult of G. loong sp. nov. D general environment of the type locality of G. buyi sp. nov." figureDoi="10.3897/zookeys.1219.125754.figure14" httpUri="https://binary.pensoft.net/fig/1184226">14 A – C</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="SECID0ERFAE" type="etymology">
<paragraph id="FB87734F25D835007A8E46206B24EEFC">
<heading id="AA7FE26CB4EE5608FB6F1F53A99B7CD8" reason="title">Etymology.</heading>
</paragraph>
<paragraph id="4813FC4CB1D7A2076E35E376EAA74109">
The specific epithet 
<taxonomicName id="2E4708CED448AE61AA8EDAF24466D239" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong">
‘ 
<emphasis id="DFF9FBDBF239F9BD7E7AA7131CF34542" italics="true">loong</emphasis>
</taxonomicName>
’ is the most famous auspicious beast in Chinese ancient myth, and also is a member of the Chinese Zodiac Signs.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EAGAE" type="Comparative diagnosis">
<paragraph id="037460E3E4A88C0608B334988EEDA49C">
<heading id="B287C803AD0CC096B390206A49890D5A" reason="title">Comparative diagnosis.</heading>
</paragraph>
<paragraph id="F3F7A924A414C303F547CAC497C4ECB2">
The new species can be placed in the 
<taxonomicName id="085C2A2743A4BEEB84294717E59AF611" authorityName="Bian &amp; Jach" authorityYear="2018" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="acutus">
<emphasis id="6BB56F8405804712AB93ED6D377DDD92" italics="true">Grouvellinus acutus</emphasis>
</taxonomicName>
species group by the following characters: 1) body small; 2) elytra with yellowish brown markings; 3) pronotum without longitudinal impression; 4) surface of elytra with granulate carinae on strial intervals III, V, VII, and VIII; 5) ventrite I with a pair of well-developed admedian carinae. The 
<taxonomicName id="E732A57F15EA754302F31FADA4BE79BE" authorityName="Bian &amp; Jach" authorityYear="2018" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="acutus">
<emphasis id="125481F53BE6D649BFA12010029CAC03" italics="true">G. acutus</emphasis>
</taxonomicName>
species group includes three known species, all of them occurring in 
<collectingCountry id="E7712F8D4E4E3C84699F741CB7A983A8" name="China">China</collectingCountry>
. Members of this group are similar in habitus. 
<taxonomicName id="FA08C9BFC2777509BEA78AF41870858E" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="F6C889B762B9E6F6FB5ECD3AB64153B1" italics="true">G. loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D5CB102184F6B8908D826BC387C4461B" rank="species">sp. nov.</taxonomicNameLabel>
can be easily distinguished from other members of this group by the obviously different shape of the aedeagus: strongly narrowed at middle (vs not as above).
</paragraph>
<paragraph id="CF88A44A284E26DB2CEEF1904A9CF4AB">
<taxonomicName id="AC852B7CEEAD55100908750FD6DE7AF9" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="4C29467299FBF542E3F3E4B4D42E77CF" italics="true">Grouvellinus loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="B2DCF3C3C7C10563EF41C0A6E09B0E64" rank="species">sp. nov.</taxonomicNameLabel>
is most similar to 
<taxonomicName id="5FA19D1D9BD385CC89BC545A17A6B8B5" authority="Bian &amp; Jach, 2018" authorityName="Bian &amp; Jach" authorityYear="2018" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="acutus">
<emphasis id="2255EC7D94E42F1E72BA9FCA280D8A8D" italics="true">G. acutus</emphasis>
<bibRefCitation id="1B534A2DE8CA21F5AC747B883F0FA6C4" DOI="10.11646/zootaxa.4387.1.8" author="Bian D-J &amp; Jäch MA" issue="1" journalOrPublisher="Zootaxa" pagination="174-182" refId="B1" refString="Bian D-J, Jach MA (2018) Revision of the Chinese species of the genus Grouvellinus Champion, 1923 (Coleoptera: Elmidae). The G. acutus species group. Zootaxa 4387 (1): 174 - 182. https: // doi. org / 10.11646 / zootaxa. 4387.1. 8" title="Revision of the Chinese species of the genus Grouvellinus Champion, 1923 (Coleoptera: Elmidae). The G. acutus species group." volume="4387" year="2018">
Bian &amp; Jäch, 
<quantity id="CF83D4595BB419164AA7F6FCB0346696" metricMagnitude="1" metricUnit="m" metricValue="5.125719999999999" unit="in" value="2018.0">2018 in</quantity>
</bibRefCitation>
</taxonomicName>
habitus. These species can be distinguished by the following characters: 1) prosternal process with weakly curved apex, surface not granulated, densely covered with large punctures in 
<taxonomicName id="FDBBE0ACBFB9D0BC833D503B88907D0C" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="24639F5124F22D5BBD2C70C200318A71" italics="true">G. loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D4EE79BFB759E5D3C71004DF9C9DFB07" rank="species">sp. nov.</taxonomicNameLabel>
(vs prosternal process with broadly rounded apex, surface sparsely granulated in 
<taxonomicName id="4B0C532EC8293F944C7E0221A2722E2F" authorityName="Bian &amp; Jach" authorityYear="2018" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="acutus">
<emphasis id="BA1B24B234404EC39FCACBAB27C7B06B" italics="true">G. acutus</emphasis>
</taxonomicName>
); 2) metatibia distinctly narrowed near apex, without hooked appendage at apex in 
<taxonomicName id="C06B72833A0279B0971EAC287AE9EFA7" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="CA90B128B8D8F8C9AE1F4BAC4DB67101" italics="true">G. loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="12330112087EC1E08606C698D107D8A2" rank="species">sp. nov.</taxonomicNameLabel>
(vs apex of metatibia conspicuously broad and sclerotized, usually with hooked appendage in 
<taxonomicName id="DCAE6900E83CB37C55095CD316012DB6" authorityName="Bian &amp; Jach" authorityYear="2018" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="acutus">
<emphasis id="C83992D23738868B95792C64D45AB0FD" italics="true">G. acutus</emphasis>
</taxonomicName>
); 3) parameres of aedeagus strongly narrowed at basal 1 / 
<quantity id="BF8D72DE0FFC47166715E9C77CB5A3AC" metricMagnitude="-2" metricUnit="m" metricValue="7.62" unit="in" value="3.0">3 in</quantity>
<taxonomicName id="ADE29A6BEC12170DE75A1150FAD34508" authorityName="Jiang &amp; Wu &amp; Chen" authorityYear="2024" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="loong" status="sp. nov.">
<emphasis id="497DC681D37C524E7BE0284BB8AFB519" italics="true">G. loong</emphasis>
</taxonomicName>
<taxonomicNameLabel id="903907C1425F685FE5CF44D3B304FAC0" rank="species">sp. nov.</taxonomicNameLabel>
(vs only weakly narrowed near base in 
<taxonomicName id="2663758E52004A3D1E4CBB66C980FE0C" authorityName="Bian &amp; Jach" authorityYear="2018" class="Insecta" family="Elmidae" genus="Grouvellinus" kingdom="Animalia" order="Coleoptera" phylum="Arthropoda" rank="species" species="acutus">
<emphasis id="8925CBC7F7D1032BC5A06A3D0FF8F516" italics="true">G. acutus</emphasis>
</taxonomicName>
).
</paragraph>
</subSubSection>
</treatment>
</document>