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<document id= "F962BF8F44F3AFFC33DD8651E90969DC" ID-CLB-Dataset= "35343" ID-DOI= "http://dx.doi.org/10.3897/zookeys.329.4961" ID-GBIF-Dataset= "1e4ab867-cf67-4105-9918-ebb52be7f061" ID-PMC= "PMC3800826" ID-Pensoft-Pub= "1313-2970-329-33" ID-PubMed= "24146552" ModsDocAuthor= "" ModsDocDate= "2013" ModsDocID= "1313-2970-329-33" ModsDocOrigin= "ZooKeys 329" ModsDocTitle= "A revision of the Larainae (Coleoptera, Elmidae) of Venezuela, with description of nine new species" checkinTime= "1451246973851" checkinUser= "pensoft" docAuthor= "Maier, Crystal A." docDate= "2013" docId= "12085D53E4A3319A04A95ADE06883B6C" docLanguage= "en" docName= "ZooKeys 329: 33-91" docOrigin= "ZooKeys 329" docSource= "http://dx.doi.org/10.3897/zookeys.329.4961" docTitle= "Hexanchorus mcdiarmidi Spangler & Staines 2003" docType= "treatment" docVersion= "5" lastPageNumber= "57" masterDocId= "307FFFAA5B6E686D5B2FFF86DF568114" masterDocTitle= "A revision of the Larainae (Coleoptera, Elmidae) of Venezuela, with description of nine new species" masterLastPageNumber= "91" masterPageNumber= "33" pageNumber= "57" updateTime= "1732672090439" updateUser= "ExternalLinkService" >
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<mods:title id= "AC83967CAA8AFB708936725E31B81F64" > A revision of the Larainae (Coleoptera, Elmidae) of Venezuela, with description of nine new species</mods:title>
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<mods:namePart id= "853CD2BFD3CD17DC00126071AABF6923" > Maier, Crystal A.</mods:namePart>
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<mods:classification id= "F096069A3E3A3F2F056FB95D7AE55809" > journal article</mods:classification>
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<treatment id= "12085D53E4A3319A04A95ADE06883B6C" ID-GBIF-Taxon= "152047497" LSID= "urn:lsid:plazi:treatment:12085D53E4A3319A04A95ADE06883B6C" httpUri= "http://treatment.plazi.org/id/12085D53E4A3319A04A95ADE06883B6C" lastPageId= "25" lastPageNumber= "57" pageId= "24" pageNumber= "57" scope_family= "Elmidae" scope_order= "Coleoptera" scope_subFamily= "Larainae" >
<subSubSection id= "9EC04B5A67603C17B4A3B5186CA145D0" pageId= "24" pageNumber= "57" type= "nomenclature" >
<paragraph id= "2FCD17D4FF75B9311BFB9C8769229726" pageId= "24" pageNumber= "57" >
<taxonomicName id= "132E070518E39C1AB320DFBD69F02774" ID-CoL= "3LGJX" LSID= "http://species-id.net/wiki/Hexanchorus_mcdiarmidi" authority= "Spangler & Staines, 2003" authorityName= "Spangler & Staines" authorityYear= "2003" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus mcdiarmidi" order= "Coleoptera" pageId= "24" pageNumber= "57" phylum= "Arthropoda" rank= "species" species= "mcdiarmidi" > Hexanchorus mcdiarmidi Spangler & Staines, 2003</taxonomicName>
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Figs 4, 48, 49
</paragraph>
</subSubSection>
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<subSubSection id= "2ED2A82F3B341051E60B7203533C2F8A" pageId= "24" pageNumber= "57" type= "" >
<paragraph id= "C2D1977BB198FAA3A97D4027370A2A3F" pageId= "24" pageNumber= "57" >
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For a complete description and illustrations of genitalia, see
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<bibRefCitation id= "9761C43A68BB62674E297FAB991837EA" author= "Spangler, PJ" journalOrPublisher= "Insecta Mundi" pageId= "56" pageNumber= "89" pagination= "45 - 48" title= "Three new species of Hexanchorus Sharp, 1882 (Coleoptera: Elmidae: Larainae) from South America." volume= "17" year= "2003" > Spangler and Staines 2003</bibRefCitation>
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.
</paragraph>
</subSubSection>
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<subSubSection id= "A791537D6FFAD3AC5248CC1F959D7E73" pageId= "24" pageNumber= "57" type= "material examined" >
<paragraph id= "47FC24E7870074CE83E98A10059EE02F" pageId= "24" pageNumber= "57" > Material examined.</paragraph>
<paragraph id= "60690BD427A6B75C8951AE77C92495B5" pageId= "24" pageNumber= "57" >
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VENEZUELA: Barinas State: " VENEZUELA: Barinas State;
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<geoCoordinate id= "B6AA6681A3E8D0C2E487DF8E0EF209AD" direction= "north" orientation= "latitude" precision= "1" value= "8.055683" > 8°03.341'N</geoCoordinate>
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,
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<geoCoordinate id= "EAF6906F454C28286B65B77A0E5D2174" direction= "west" orientation= "longitude" precision= "1" value= "-70.94328" > 70°56.597'W</geoCoordinate>
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, 203m; nr. Quiri, Rio Quiu; 15.vii.2009; leg. W. Shepard; ex. bulk sample; VZ09-0715-03Z" (99 specimens SEMC). Distrito Capital:" VENEZUELA, Dto. Federal; Los Caracas; 19 January 1985; P. Spangler, R. Faitoute; W. Steiner, & A. Conover" (6 paratypes USNM)
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<normalizedToken id= "778ACA558FAB0C5386768482818DD5D7" originalValue= "Mérida" > Merida</normalizedToken>
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State: " VENEZUELA:
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<normalizedToken id= "EC7F68EE85A022B24912032B4039B34C" originalValue= "Mérida" > Merida</normalizedToken>
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State;
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<geoCoordinate id= "13EE6843EBDB40A39EF422CA7582115E" direction= "north" orientation= "latitude" precision= "1" value= "8.953417" > 8°57.205'N</geoCoordinate>
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,
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<geoCoordinate id= "B54B537B362AB113FF4DEA5391160058" direction= "west" orientation= "longitude" precision= "1" value= "-71.29366" > 71°17.620'W</geoCoordinate>
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, 88m; W. of Tucani; 21.vii2009; Gross sample from river; leg. Shepard; VZ09-0721-04Z" (17 specimens SEMC). Zulia State: " VENEZUELA: Zulia State;
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<geoCoordinate id= "3055E8C769B2B3EDFF745F46A32131A5" direction= "north" orientation= "latitude" precision= "1" value= "9.841884" > 9°50.513'N</geoCoordinate>
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,
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<geoCoordinate id= "CF67D46F104B7B1F3F17795D18522527" direction= "west" orientation= "longitude" precision= "1" value= "-72.805565" > 72°48.334'W</geoCoordinate>
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. 252m; Perija N.P. Tukuko: Rio Tukuko; 5.vii.2009; leg. Short & Gustafson; riffle/rocks in river; VZ09-0705-01B" (96 specimens SEMC). " VENEZUELA: Zulia State; P.N. Perija: Tukuko; 18 vii.2008; Rio Marpito" " Andrew E. Z.; Short, leg." (5 specimens SEMC). " VENEZUELA: Zulia El; Tucuco (51 km S.O. de; Machiques); 24-VI-1992" " Colector:; J. Camacho" (11 specimens MALUZ).
</paragraph>
</subSubSection>
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<subSubSection id= "C13F4B0003BD280990485C0B974B0DCA" pageId= "24" pageNumber= "57" type= "diagnosis" >
<paragraph id= "F296AA00D8B9A3F314B14D46C31BF721" pageId= "24" pageNumber= "57" > Diagnosis.</paragraph>
<paragraph id= "74F40A4A4C7CEE0D5A26085D8961C929" pageId= "24" pageNumber= "57" >
<taxonomicName id= "9DE9115B9E56B00406428F6EE5703D74" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus mcdiarmidi" order= "Coleoptera" pageId= "24" pageNumber= "57" phylum= "Arthropoda" rank= "species" species= "mcdiarmidi" > Hexanchorus mcdiarmidi</taxonomicName>
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can be disinguished from all other
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<taxonomicName id= "C8C50F85C0FC60BAD936886DCFABB724" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus" order= "Coleoptera" pageId= "24" pageNumber= "57" phylum= "Arthropoda" rank= "genus" > Hexanchorus</taxonomicName>
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species in Venezuela by the presence of a greenish iridescent sheen on the dorsal setae (Fig. 48), the narrow parameres, and pronotum with only a shallow postero-median impression (Fig. 48).
</paragraph>
</subSubSection>
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<subSubSection id= "5498078599FDB6DCB108AD8A5BCFA0EA" pageId= "24" pageNumber= "57" type= "intraspecific variation" >
<paragraph id= "59E116F84024359306F764EC40B593A1" pageId= "24" pageNumber= "57" > Intraspecific variation.</paragraph>
<paragraph id= "6CF21C9EDDD18042DC18FCC00E889278" pageId= "24" pageNumber= "57" >
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This species varies slightly from black to dark brown in color, additionally, there may be slight variation in the greenish iridescence of the elytral setae.
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<taxonomicName id= "0206B9731C4A625E4A2E48989863E9B0" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus mcdiarmidi" order= "Coleoptera" pageId= "24" pageNumber= "57" phylum= "Arthropoda" rank= "species" species= "mcdiarmidi" > Hexanchorus mcdiarmidi</taxonomicName>
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has a purplish and orange iridescent sheen while submerged in alcohol (Short, pers. comm.). There is variation in size (2.9-3.4 mm TL) and slight differences in punctation among specimens.
</paragraph>
</subSubSection>
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<subSubSection id= "4815099E3CF8B8572DAE9D2A56767CF4" pageId= "24" pageNumber= "57" type= "habitat and distribution" >
<paragraph id= "8F4AB22F459FA69A9DF66752C5919240" pageId= "24" pageNumber= "57" > Habitat and distribution.</paragraph>
<paragraph id= "904020B3E487CB9A28C0DB7709276658" pageId= "24" pageNumber= "57" >
<taxonomicName id= "28E319A3F19959FF05C27A3A54C617DF" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus mcdiarmidi" order= "Coleoptera" pageId= "24" pageNumber= "57" phylum= "Arthropoda" rank= "species" species= "mcdiarmidi" > Hexanchorus mcdiarmidi</taxonomicName>
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is widespread in lower altitude (< 300 m elevation) streams throughout western Venezuela (Fig. 4). They can be found in dense aggregations on water-splashed emergent rocks in small to medium sized swift-flowing streams and rivers with rocky substrate.
</paragraph>
</subSubSection>
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<subSubSection id= "6414F298B17047D9B7856780E203B5F4" lastPageId= "25" lastPageNumber= "58" pageId= "24" pageNumber= "57" type= "associated species" >
<paragraph id= "E0F415633F5DFFF3CE6ED0CA77D97F70" pageId= "24" pageNumber= "57" > Associated species.</paragraph>
<paragraph id= "EEE8A8EFC3654230C2FEDFE6C87A9FAD" lastPageId= "25" lastPageNumber= "58" pageId= "24" pageNumber= "57" >
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While no other species of
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<taxonomicName id= "F3547CF7592820061C44F6F02A9BF5E7" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "genus" >
<pageBreakToken id= "EE07959ACCC84203578232A9732BB434" pageId= "25" pageNumber= "58" start= "start" > Hexanchorus</pageBreakToken>
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</taxonomicName>
were collected at the same localities as
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<taxonomicName id= "315AF3B592BBE36D46097024F484E303" class= "Insecta" family= "Elmidae" genus= "Hexanchorus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Hexanchorus mcdiarmidi" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "species" species= "mcdiarmidi" > Hexanchorus mcdiarmidi</taxonomicName>
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, other laraines collected in the same habitats include
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<taxonomicName id= "A305771A9F9330F5D64652C3E8101642" class= "Insecta" family= "Elmidae" genus= "Disersus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Disersus dasycolus" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "species" species= "dasycolus" > Disersus dasycolus</taxonomicName>
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,
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<taxonomicName id= "1AA7F79B04C1F77A7D050789C75BE106" class= "Insecta" family= "Elmidae" genus= "Phanocerus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Phanocerus congener" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "species" species= "congener" > Phanocerus congener</taxonomicName>
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and
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<taxonomicName id= "B303F1E47740CFE5B3E7C2C359A6D4D2" class= "Insecta" family= "Elmidae" genus= "Phanocerus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Phanocerus clavicornis" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "species" species= "clavicornis" > Phanocerus clavicornis</taxonomicName>
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, and
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<taxonomicName id= "22F0652C253F3516420E35007ADF1970" class= "Insecta" family= "Elmidae" genus= "Pharceonus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Pharceonus volcanus" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "species" species= "volcanus" > Pharceonus volcanus</taxonomicName>
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. Other water beetles collected at the same sites include:
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<taxonomicName id= "72FBBEBB7FB630E643F87464E119EA5A" class= "Insecta" family= "Hydrophilidae" genus= "Anacaena" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Anacaena" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "genus" > Anacaena</taxonomicName>
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spp. and
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<taxonomicName id= "A4C5F044DCF88D3C27941747657386BB" class= "Insecta" family= "Hydrophilidae" genus= "Enochrus" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "Enochrus" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "genus" > Enochrus</taxonomicName>
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spp. (
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<taxonomicName id= "21090E0F1931B63A11877D2C956F6104" class= "Insecta" family= "Hydrophilidae" higherTaxonomySource= "CoL" kingdom= "Animalia" lsidName= "" order= "Coleoptera" pageId= "25" pageNumber= "58" phylum= "Arthropoda" rank= "family" > Hydrophilidae</taxonomicName>
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).
</paragraph>
</subSubSection>
</treatment>
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