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<document id="190293BB4F5773DD2A0E843348BC6083" ID="10.11646/zootaxa.4136.1.5" ID-DOI="10.11646/zootaxa.4136.1.5" ID-GBIF-Dataset="2992b4da-4a40-4155-9031-dd816c1ae590" ID-ISSN="1175-5326" ID-Zenodo-Dep="266898" ID-ZooBank="100BC0A4-08BF-4C1F-8E09-9DE2C5F3ADB4" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1467727244498" checkinUser="plazi" docAuthor="Aquino, Adriana E. &amp; Sabaj Pérez, Mark H." docDate="2016" docId="03DD312CC147FFCDFF421E92D04D75B9" docLanguage="en" docName="zootaxa.4136.1.5.pdf" docOrigin="Zootaxa 4136 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Oxyropsis ephippia Aquino &amp; Sabaj Perez, sp. nov." docType="treatment" docVersion="7" lastPageNumber="134" masterDocId="FFE44954C144FFC8FFD51E0AD3447249" masterDocTitle="Oxyropsis ephippia, a New Hypoptopomatine Catfish (Siluriformes: Loricariidae) from Guyana" masterLastPageNumber="140" masterPageNumber="129" pageNumber="132" updateTime="1698363583516" updateUser="plazi">
<mods:mods id="9E8193DBE69272CE6DA017E98C440CC0" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="7AF802F7E6C10E03AADBB88136DD1402">
<mods:title id="C5B9F25908596E35298535F554C3ACEB">Oxyropsis ephippia, a New Hypoptopomatine Catfish (Siluriformes: Loricariidae) from Guyana</mods:title>
</mods:titleInfo>
<mods:name id="561F367CD7AD5407D071E37FEDBA2C13" type="personal">
<mods:role id="ADF787956104A0C970317DEADE746F26">
<mods:roleTerm id="1AD9AE53C85ED462A166352CB5E85D1E">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="BE2EAB03243126E9E8133890D87AC845">Aquino, Adriana E.</mods:namePart>
</mods:name>
<mods:name id="A8D29986D1B072A3DE88FD06BE3030DA" type="personal">
<mods:role id="1C9F30D3005E397B23C01573DC47217F">
<mods:roleTerm id="534B20F661F7AF1EAA52DD07ADE520CF">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="DF543EB0C301D752CE3F63ED5AC97DC1">Sabaj Pérez, Mark H.</mods:namePart>
</mods:name>
<mods:typeOfResource id="D9046042CF8A763D494606F4AE248EB8">text</mods:typeOfResource>
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<mods:title id="A6FC2FA6B9503FD537E42889BF3C0939">Zootaxa</mods:title>
</mods:titleInfo>
<mods:part id="AAFF51DE496BCBEA14658E22EE061FDB">
<mods:date id="064779572460D209BA57C24B45508E21">2016</mods:date>
<mods:detail id="5B48B11FB1759899960B891C81AA417A" type="volume">
<mods:number id="73095C5A2947534B4B0FAF4F37E131D3">4136</mods:number>
</mods:detail>
<mods:detail id="97ADE5FB7151504D143BDBE4F1156FDD" type="issue">
<mods:number id="A91077E329BEEC8786DF4516A4AC9A30">1</mods:number>
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<mods:classification id="CA93AD6928857E85329961850846E583">journal article</mods:classification>
<mods:identifier id="A9DEB195DF903D8CED4983DC4E787B48" type="DOI">10.11646/zootaxa.4136.1.5</mods:identifier>
<mods:identifier id="053A3972A9497246FFB939A484714BDD" type="GBIF-Dataset">2992b4da-4a40-4155-9031-dd816c1ae590</mods:identifier>
<mods:identifier id="8030D9B265F29A88D49DB8D16D61CBE7" type="ISSN">1175-5326</mods:identifier>
<mods:identifier id="BBC45E594826E1209F7D8A8A9895A4F1" type="Zenodo-Dep">266898</mods:identifier>
<mods:identifier id="E74DFDC022EF0EE1F30146245E52C5AA" type="ZooBank">100BC0A4-08BF-4C1F-8E09-9DE2C5F3ADB4</mods:identifier>
</mods:mods>
<treatment id="03DD312CC147FFCDFF421E92D04D75B9" ID-DOI="http://doi.org/10.5281/zenodo.6055888" ID-GBIF-Taxon="121269120" ID-Zenodo-Dep="6055888" LSID="urn:lsid:plazi:treatment:03DD312CC147FFCDFF421E92D04D75B9" httpUri="http://treatment.plazi.org/id/03DD312CC147FFCDFF421E92D04D75B9" lastPageId="5" lastPageNumber="134" pageId="3" pageNumber="132">
<subSubSection id="C36ED3B1C147FFCBFF421E92D24B729C" pageId="3" pageNumber="132" type="nomenclature">
<paragraph id="8BCB803AC147FFCBFF421E92D19D72F9" blockId="3.[151,729,151,213]" box="[151,729,151,176]" pageId="3" pageNumber="132">
<heading id="D0833756C147FFCBFF421E92D19D72F9" bold="true" box="[151,729,151,176]" fontSize="10" level="2" pageId="3" pageNumber="132" reason="2">
<emphasis id="B9005C28C147FFCBFF421E92D19D72F9" bold="true" box="[151,729,151,176]" pageId="3" pageNumber="132">
<taxonomicName id="4C74FBB9C147FFCBFF421E92D13872F9" authority="Aquino &amp; Sabaj Perez" authorityName="Aquino &amp; Sabaj Perez" box="[151,636,151,176]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="ephippia" status="sp. nov.">
<emphasis id="B9005C28C147FFCBFF421E92D23572F9" bold="true" box="[151,369,151,176]" italics="true" pageId="3" pageNumber="132">Oxyropsis ephippia</emphasis>
Aquino &amp; Sabaj Pérez
</taxonomicName>
<taxonomicNameLabel id="A233E153C147FFCBFD561E9DD19D72F9" box="[643,729,151,176]" pageId="3" pageNumber="132" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="8BCB803AC147FFCBFF421EB6D24B729C" blockId="3.[151,729,151,213]" box="[151,271,188,213]" pageId="3" pageNumber="132">
(
<figureCitation id="134F9CBFC147FFCBFF4A1EB6D242729C" box="[159,262,188,213]" captionStart-0="FIGURE 3" captionStart-1="FIGURE 4" captionStart-2="FIGURE 5" captionStartId-0="4.[151,248,1484,1506]" captionStartId-1="7.[151,248,1278,1300]" captionStartId-2="9.[151,248,1901,1923]" captionTargetBox-0="[151,1435,297,1462]" captionTargetBox-1="[151,1436,193,1255]" captionTargetBox-2="[228,1354,195,1874]" captionTargetId-0="figure@4.[151,1436,297,1463]" captionTargetId-1="figure@7.[151,1436,193,1256]" captionTargetId-2="figure@9.[228,1355,195,1874]" captionTargetPageId-0="4" captionTargetPageId-1="7" captionTargetPageId-2="9" captionText-0="FIGURE 3. Oxyropsis ephippia, ANSP 177381, holotype, 42.0 mm SL, Guyana: Burro Burro River (Essequibo Basin). Photos by K. Luckenbill and T. Tran." captionText-1="FIGURE 4. Oxyropsis ephippia, ANSP 180670, paratype, XX mm SL, Guyana: Yuora River (trib Ireng, Takutu – Branco – Negro Dr., Amazon Basin)." captionText-2="FIGURE 5. Pigmentation pattern in caudal fin of (A) Oxyropsis ephippia, 29.1 mm SL (ANSP 180664) (B) Oxyropsis wrightiana, 50.1 mm SL (ANSP 178336), (C) Hypoptopoma guianense, 41.4 mm SL (AUM 35652), (D) Hypoptopoma psilogaster, 34.9 mm SL (ANSP 180658). Vertical line points to enlarged odontode on posterior margin of median plate, immediately dorsal to pore of lateral-line canal. Scale is 5 mm. Photos by K. Luckenbill and T. Tran." httpUri-0="https://zenodo.org/record/266901/files/figure.png" httpUri-1="https://zenodo.org/record/266902/files/figure.png" httpUri-2="https://zenodo.org/record/266903/files/figure.png" pageId="3" pageNumber="132">Figs. 3–5</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C36ED3B1C147FFCBFF421F0ED79D767D" pageId="3" pageNumber="132" type="materials_examined">
<paragraph id="8BCB803AC147FFCBFF421F0ED6727309" blockId="3.[151,1437,260,2013]" pageId="3" pageNumber="132">
<typeStatus id="54CF3E98C147FFCBFF421F0ED2477354" box="[151,259,260,285]" pageId="3" pageNumber="132" type="holotype">
<emphasis id="B9005C28C147FFCBFF421F0ED2477354" bold="true" box="[151,259,260,285]" pageId="3" pageNumber="132">Holotype</emphasis>
</typeStatus>
:
<collectionCode id="ED6518FFC147FFCBFEC01F0ED2187355" box="[277,348,260,284]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
177381, female 42.0 mm SL,
<collectingCountry id="F363C0AAC147FFCBFD1E1F0ED0607355" box="[715,804,260,284]" name="Guyana" pageId="3" pageNumber="132">Guyana</collectingCountry>
, Burro Burro River (
<collectingCountry id="F363C0AAC147FFCBFBC81F0ED7D67354" box="[1053,1170,260,285]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
Drainage), Deer Falls between Deer Creek and Water Dog Falls,
<geoCoordinate id="EE40E6FDC147FFCBFDA61F2DD1AF7309" box="[627,747,295,320]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.6647224">4°39'53&quot;N</geoCoordinate>
,
<geoCoordinate id="EE40E6FDC147FFCBFD231F2DD03B7309" box="[758,895,295,320]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.84111">58°50'28&quot;W</geoCoordinate>
, G. Watkins
<emphasis id="B9005C28C147FFCBFBC71F23D7077309" box="[1042,1091,296,320]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFB8D1F22D6767309" box="[1112,1330,295,320]" pageId="3" pageNumber="132" value="1997-11-21">21 November 1997</date>
.
</paragraph>
<paragraph id="8BCB803AC147FFCBFF121F46D79D767D" blockId="3.[151,1437,260,2013]" pageId="3" pageNumber="132">
<typeStatus id="54CF3E98C147FFCBFF121F46D27A732C" box="[199,318,332,357]" pageId="3" pageNumber="132" type="paratype">
<emphasis id="B9005C28C147FFCBFF121F46D27A732C" bold="true" box="[199,318,332,357]" pageId="3" pageNumber="132">Paratypes</emphasis>
</typeStatus>
(49,
<quantity id="4C8C2DDFC147FFCBFEAF1F46D159732D" box="[378,541,332,356]" metricMagnitude="-2" metricUnit="m" metricValue="3.3549999999999995" metricValueMax="4.4799999999999995" metricValueMin="2.23" pageId="3" pageNumber="132" unit="mm" value="33.55" valueMax="44.8" valueMin="22.3">22.3–44.8 mm</quantity>
SL).—
<collectingCountry id="F363C0AAC147FFCBFDBA1F46D18E732D" box="[623,714,332,356]" name="Guyana" pageId="3" pageNumber="132">Guyana</collectingCountry>
,
<collectingCountry id="F363C0AAC147FFCBFD031F46D00C732C" box="[726,840,332,357]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
–Atlantic Ocean Drainage:
<collectionCode id="ED6518FFC147FFCBFBAE1F46D794732D" box="[1147,1232,332,356]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34925" name="American Museum of Natural History" pageId="3" pageNumber="132">AMNH</collectionCode>
265342, 3 (1 cs)
<quantity id="4C8C2DDFC147FFCBFF421F65D27F73CE" box="[151,315,367,392]" metricMagnitude="-2" metricUnit="m" metricValue="3.3200000000000003" metricValueMax="3.6700000000000004" metricValueMin="2.9699999999999998" pageId="3" pageNumber="132" unit="mm" value="33.2" valueMax="36.7" valueMin="29.7">29.7–36.7 mm</quantity>
SL, Rupununi River
<quantity id="4C8C2DDFC147FFCBFDF81F65D13873C1" box="[557,636,367,392]" metricMagnitude="3" metricUnit="m" metricValue="4.6" pageId="3" pageNumber="132" unit="km" value="4.6">4.6 km</quantity>
NW of village of Massara,
<geoCoordinate id="EE40E6FDC147FFCBFC6C1F65D76A73C1" box="[953,1070,367,392]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="3.9261112">3°55'34&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFBE01F65D7FA73C1" box="[1077,1214,367,392]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-59.280277">59°16'49&quot;W</geoCoordinate>
, M. Sabaj
<emphasis id="B9005C28C147FFCBFAED1F7BD62D73C1" box="[1336,1385,368,392]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFA541F65D27073E5" pageId="3" pageNumber="132" value="2002-10-26">26 October 2002</date>
;
<collectionCode id="ED6518FFC147FFCBFE941F9ED2C373E5" box="[321,391,404,428]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
175918, 1,
<quantity id="4C8C2DDFC147FFCBFDDA1F9ED13073E5" box="[527,628,404,428]" metricMagnitude="-2" metricUnit="m" metricValue="3.08" pageId="3" pageNumber="132" unit="mm" value="30.8">30.8 mm</quantity>
SL, small creeks crossing Kurupukari–Surama River road ca. 3.0 miles from Kurupukari field station,
<geoCoordinate id="EE40E6FDC147FFCBFE2F1FB2D1327399" box="[506,630,440,464]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.3747225">4°22’29”N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFDA81FBDD04E7399" box="[637,778,439,464]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.841667">58°50’30”W</geoCoordinate>
, W.G. Saul
<emphasis id="B9005C28C147FFCBFC5B1FB3D0847399" box="[910,960,440,464]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFC011FB2D7D57399" box="[980,1169,439,464]" pageId="3" pageNumber="132" value="1997-02-04">4 February 1997</date>
;
<collectionCode id="ED6518FFC147FFCBFB481FB2D7A07399" box="[1181,1252,440,464]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
175919, 1, 29.0 mm SL,
<collectingCountry id="F363C0AAC147FFCBFED91FD6D23A73BC" box="[268,382,476,501]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
River approximately three hours upstream from Kurupukari field station,
<geoCoordinate id="EE40E6FDC147FFCBFAF41FD6D6D873BD" box="[1313,1436,476,500]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.5713887">4°34’17”N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFF421FF5D2607051" box="[151,292,511,536]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.588055">58°35’17”W</geoCoordinate>
, W.G. Saul
<emphasis id="B9005C28C147FFCBFE791C0BD29B7051" box="[428,479,512,536]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFE231C0AD1E27051" box="[502,678,512,536]" pageId="3" pageNumber="132" value="1997-01-03">3 January 1997</date>
;
<collectionCode id="ED6518FFC147FFCBFD611C0AD1BF7051" box="[692,763,512,536]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
175920, 1, 27.0 mm SL, clearwater creek at campsite
<quantity id="4C8C2DDFC147FFCBFAAC1C0AD3977074" metricMagnitude="3" metricUnit="m" metricValue="4.9889664" pageId="3" pageNumber="132" unit="mi" value="3.1">3.1 miles</quantity>
from Kurupukari field station on Kurupukari–Surama River road,
<geoCoordinate id="EE40E6FDC147FFCBFC161C2ED76F7075" box="[963,1067,548,572]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.633333">4°38'0&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFBEF1C2ED7877074" box="[1082,1219,548,573]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.71639">58°42'59&quot;W</geoCoordinate>
, W.G. Saul
<emphasis id="B9005C28C147FFCBFA931C2FD63C7075" box="[1350,1400,548,572]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFA5B1C2ED2057029" pageId="3" pageNumber="132" value="1997-02-05">5 February 1997</date>
;
<collectionCode id="ED6518FFC147FFCBFE871C42D2DD7029" box="[338,409,584,608]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
175921, 1,
<quantity id="4C8C2DDFC147FFCBFDF91C4DD1D17016" box="[556,661,583,608]" metricMagnitude="-2" metricUnit="m" metricValue="2.95" pageId="3" pageNumber="132" unit="mm" value="29.5">29.5 mm</quantity>
SL,
<collectingCountry id="F363C0AAC147FFCBFD061C4DD0027029" box="[723,838,583,608]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
River approximately two hours downstream from Kurupukari field station,
<geoCoordinate id="EE40E6FDC147FFCBFE631C66D16F70CD" box="[438,555,620,644]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.7955556">4°47'44&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFDE11C66D1F870CC" box="[564,700,620,645]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.814445">58°48'52&quot;W</geoCoordinate>
, W.G. Saul
<emphasis id="B9005C28C147FFCBFC961C67D03270CD" box="[835,886,620,644]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFC581C66D70F70CD" box="[909,1099,620,645]" pageId="3" pageNumber="132" value="1997-01-20">20 January 1997</date>
;
<collectionCode id="ED6518FFC147FFCBFB8F1C66D7E570CD" box="[1114,1185,620,644]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
175922, 4,
<quantity id="4C8C2DDFC147FFCBFAF91C66D38770EE" metricMagnitude="-2" metricUnit="m" metricValue="2.68" metricValueMax="2.78" metricValueMin="2.58" pageId="3" pageNumber="132" unit="mm" value="26.8" valueMax="27.8" valueMin="25.8">25.8–27.8 mm</quantity>
SL,
<collectingCountry id="F363C0AAC147FFCBFED31C85D23D70E1" box="[262,377,655,680]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
River, sandbar ca.
<quantity id="4C8C2DDFC147FFCBFDA21C9AD18170EE" box="[631,709,656,680]" metricMagnitude="2" metricUnit="m" metricValue="8.0" pageId="3" pageNumber="132" unit="m" value="800.0">800 m</quantity>
downstream from
<collectingCountry id="F363C0AAC147FFCBFC7B1C85D76470E1" box="[942,1056,655,680]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
campsite (Maipuri),
<geoCoordinate id="EE40E6FDC147FFCBFAF41C85D6D870E1" box="[1313,1436,655,680]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.7619443">4°45’43”N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFF421CBED2627084" box="[151,294,692,717]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.764446">58°45’52”W</geoCoordinate>
, W.G. Saul,
<emphasis id="B9005C28C147FFCBFE781CBFD29B7085" box="[429,479,692,716]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFE211CBED1EB7085" box="[500,687,692,717]" pageId="3" pageNumber="132" value="1997-01-29">29 January 1997</date>
;
<collectionCode id="ED6518FFC147FFCBFD6F1CBED0457085" box="[698,769,692,716]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFCDD1CBED01B7084" box="[776,863,692,717]" pageId="3" pageNumber="132" value="59-06-18">180659</date>
, 3,
<quantity id="4C8C2DDFC147FFCBFC531CBED76D7085" box="[902,1065,692,717]" metricMagnitude="-2" metricUnit="m" metricValue="3.335" metricValueMax="4.05" metricValueMin="2.62" pageId="3" pageNumber="132" unit="mm" value="33.35" valueMax="40.5" valueMin="26.2">26.2–40.5 mm</quantity>
SL,
<collectingCountry id="F363C0AAC147FFCBFB881CBED7947084" box="[1117,1232,692,717]" name="Guyana" pageId="3" pageNumber="132">Essequibo</collectingCountry>
River (east bank) at Kurukupari,
<geoCoordinate id="EE40E6FDC147FFCBFE941CD2D2F170B9" box="[321,437,728,752]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.661389">4°39'41&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFE681CDDD10170B9" box="[445,581,727,752]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-58.675278">58°40'31&quot;W</geoCoordinate>
, J.W. Armbruster
<emphasis id="B9005C28C147FFCBFCC71CD3D00770B9" box="[786,835,728,752]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFC8C1CD2D75C70B9" box="[857,1048,727,752]" pageId="3" pageNumber="132" value="2002-10-24">24 October 2002</date>
;
<collectionCode id="ED6518FFC147FFCBFBF11CD2D72E70B9" box="[1060,1130,728,752]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFBAF1CDDD79570B9" box="[1146,1233,727,752]" pageId="3" pageNumber="132" value="62-06-18">180662</date>
, 3,
<quantity id="4C8C2DDFC147FFCBFB2C1CD2D6D870A6" box="[1273,1436,728,752]" metricMagnitude="-2" metricUnit="m" metricValue="2.35" metricValueMax="2.4699999999999998" metricValueMin="2.23" pageId="3" pageNumber="132" unit="mm" value="23.5" valueMax="24.7" valueMin="22.3">22.3–24.7 mm</quantity>
SL, Rupununi River,
<quantity id="4C8C2DDFC147FFCBFE5B1CF6D29B715C" box="[398,479,764,789]" metricMagnitude="3" metricUnit="m" metricValue="3.7" pageId="3" pageNumber="132" unit="km" value="3.7">3.7 km</quantity>
SSE village of Massara,
<geoCoordinate id="EE40E6FDC147FFCBFCD21CF6D038715C" box="[775,892,764,789]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="3.8622222">3°51'44&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFC591CF6D743715C" box="[908,1031,764,789]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-59.284443">59°17'4&quot;W</geoCoordinate>
, M. Sabaj
<emphasis id="B9005C28C147FFCBFB5D1CF7D7F8715D" box="[1160,1212,764,788]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFB011CF6D6DC715D" box="[1236,1432,764,789]" pageId="3" pageNumber="132" value="2002-10-27">27 October 2002</date>
;
<collectionCode id="ED6518FFC147FFCBFF421D2AD39A7171" box="[151,222,800,824]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFF301D15D2787171" box="[229,316,799,824]" pageId="3" pageNumber="132" value="64-06-18">180664</date>
, 2,
<quantity id="4C8C2DDFC147FFCBFEB01D15D14C717E" box="[357,520,799,824]" metricMagnitude="-2" metricUnit="m" metricValue="3.245" metricValueMax="3.54" metricValueMin="2.95" pageId="3" pageNumber="132" unit="mm" value="32.45" valueMax="35.4" valueMin="29.5">29.5–35.4 mm</quantity>
SL,
<collectionCode id="ED6518FFC147FFCBFDEA1D2AD1C47171" box="[575,640,800,824]" country="USA" httpUri="http://grbio.org/cool/8wk2-p21y" name="Auburn University Museum of Natural History" pageId="3" pageNumber="132">AUM</collectionCode>
35652, 12,
<quantity id="4C8C2DDFC147FFCBFCDF1D15D0E9717E" box="[778,941,799,824]" metricMagnitude="-2" metricUnit="m" metricValue="2.67" metricValueMax="3.09" metricValueMin="2.25" pageId="3" pageNumber="132" unit="mm" value="26.7" valueMax="30.9" valueMin="22.5">22.5–30.9 mm</quantity>
SL,
<collectionCode id="ED6518FFC147FFCBFC361D2AD7667171" box="[995,1058,800,824]" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="3" pageNumber="132">INPA</collectionCode>
50886, 3, 27.7–30.0 mm SL, and
<collectionCode id="ED6518FFC147FFCBFF421D4ED3937115" box="[151,215,836,860]" country="Canada" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34778" name="Royal Ontario Museum" pageId="3" pageNumber="132">ROM</collectionCode>
91534, 3, 26.1–29.0 mm SL, same data as
<collectionCode id="ED6518FFC147FFCBFD031D4ED06F7115" box="[726,811,836,860]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34925" name="American Museum of Natural History" pageId="3" pageNumber="132">AMNH</collectionCode>
265342;
<collectionCode id="ED6518FFC147FFCBFC4F1D4ED0A57115" box="[922,993,836,860]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFC3F1D4ED7057114" box="[1002,1089,836,861]" pageId="3" pageNumber="132" value="66-06-18">180666</date>
, 5, 23.0–25.0 mm SL, Simoni River (trib Rupununi), four stations along river from
<quantity id="4C8C2DDFC147FFCBFD261D6DD00671C9" box="[755,834,871,896]" metricMagnitude="3" metricUnit="m" metricValue="6.6" pageId="3" pageNumber="132" unit="km" value="6.6">6.6 km</quantity>
SE to
<quantity id="4C8C2DDFC147FFCBFC451D62D09B71C9" box="[912,991,871,896]" metricMagnitude="3" metricUnit="m" metricValue="3.2" pageId="3" pageNumber="132" unit="km" value="3.2">3.2 km</quantity>
W of Karanambo Ranch, ca.
<geoCoordinate id="EE40E6FDC147FFCBFAE01D62D6D871C9" box="[1333,1436,872,896]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="3.7191668">3°43'9&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFF421D86D25B71EC" box="[151,287,908,933]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-59.261112">59°15'40&quot;W</geoCoordinate>
, M. Sabaj
<emphasis id="B9005C28C147FFCBFE401D87D28271ED" box="[405,454,908,932]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFE0F1D86D1DC71ED" box="[474,664,908,933]" pageId="3" pageNumber="132" value="2002-10-29">29 October 2002</date>
;
<collectionCode id="ED6518FFC147FFCBFD761D86D1AD71ED" box="[675,745,908,932]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFD3A1D86D00271EC" box="[751,838,908,933]" pageId="3" pageNumber="132" value="85-06-18">180685</date>
, 1, 33.0 mm SL, Araquai Creek (trib Rupununi),
<quantity id="4C8C2DDFC147FFCBFABE1D86D3FF7181" metricMagnitude="4" metricUnit="m" metricValue="7.7299999999999995" pageId="3" pageNumber="132" unit="km" value="77.3">77.3 km</quantity>
SSE of Lethem,
<geoCoordinate id="EE40E6FDC147FFCBFEAC1DA5D2A97181" box="[377,493,943,968]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="2.7625">2°45'45&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFE211DA5D13A7181" box="[500,638,943,968]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-59.466667">59°27'60&quot;W</geoCoordinate>
, M. Sabaj
<emphasis id="B9005C28C147FFCBFD231DBBD0627181" box="[758,806,944,968]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.
<date id="FFCAA6FAC147FFCBFCEE1DA5D7517181" box="[827,1045,943,968]" pageId="3" pageNumber="132" value="2003-11-15">15 November 2003</date>
;
<collectionCode id="ED6518FFC147FFCBFBF41DBAD7187181" box="[1057,1116,944,968]" country="Brazil" httpUri="http://grbio.org/cool/bqgs-f9q8" name="Pontificia Universidade Catolica do Rio Grande do Sul" pageId="3" pageNumber="132">MCP</collectionCode>
49016, 2 alc,
<quantity id="4C8C2DDFC147FFCBFB2C1DA5D6D9718E" box="[1273,1437,943,968]" metricMagnitude="-2" metricUnit="m" metricValue="2.85" metricValueMax="3.08" metricValueMin="2.62" pageId="3" pageNumber="132" unit="mm" value="28.5" valueMax="30.8" valueMin="26.2">26.2–30.8 mm</quantity>
SL, same data as
<collectionCode id="ED6518FFC147FFCBFEA11DDED2FF71A5" box="[372,443,980,1004]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFE1D1DDED15B71A4" box="[456,543,980,1005]" pageId="3" pageNumber="132" value="66-06-18">180666</date>
;
<collectionCode id="ED6518FFC147FFCBFDE71DDED12971A5" box="[562,621,980,1004]" country="Brazil" httpUri="http://grbio.org/cool/bqgs-f9q8" name="Pontificia Universidade Catolica do Rio Grande do Sul" pageId="3" pageNumber="132">MCP</collectionCode>
49017, 2, same data as
<collectionCode id="ED6518FFC147FFCBFC7E1DDED0B571A5" box="[939,1009,980,1004]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
175919.—Branco–Negro–Amazonas Drainage:
<collectionCode id="ED6518FFC147FFCBFED91DF2D2177659" box="[268,339,1016,1040]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="3" pageNumber="132">ANSP</collectionCode>
<date id="FFCAA6FAC147FFCBFE8F1DFDD2F57659" box="[346,433,1015,1040]" pageId="3" pageNumber="132" value="70-06-18">180670</date>
, 2,
<quantity id="4C8C2DDFC147FFCBFE341DF2D1C07646" box="[481,644,1016,1040]" metricMagnitude="-2" metricUnit="m" metricValue="4.26" metricValueMax="4.4799999999999995" metricValueMin="4.04" pageId="3" pageNumber="132" unit="mm" value="42.599999999999994" valueMax="44.8" valueMin="40.4">40.4–44.8 mm</quantity>
SL, Yuora River (trib Ireng, Takutu drainage),
<quantity id="4C8C2DDFC147FFCBFB461DFDD7A57659" box="[1171,1249,1015,1040]" metricMagnitude="3" metricUnit="m" metricValue="6.7" pageId="3" pageNumber="132" unit="km" value="6.7">6.7 km</quantity>
NE of village of Karasabai on road to Tiger Creek village,
<geoCoordinate id="EE40E6FDC147FFCBFDA51A16D193767D" box="[624,727,1052,1076]" direction="north" orientation="latitude" pageId="3" pageNumber="132" precision="15" value="4.0538893">4°3'14&quot;N</geoCoordinate>
<geoCoordinate id="EE40E6FDC147FFCBFD0B1A16D01C767C" box="[734,856,1052,1077]" direction="west" orientation="longitude" pageId="3" pageNumber="132" precision="15" value="-59.48528">59°29'7&quot;W</geoCoordinate>
, M. Sabaj
<emphasis id="B9005C28C147FFCBFC041A17D747767D" box="[977,1027,1052,1076]" italics="true" pageId="3" pageNumber="132">et al</emphasis>
.,
<date id="FFCAA6FAC147FFCBFBC21A16D792767D" box="[1047,1238,1052,1077]" pageId="3" pageNumber="132" value="2002-10-31">31 October 2002</date>
.
</paragraph>
</subSubSection>
<subSubSection id="C36ED3B1C147FFCBFF121A35D072743D" pageId="3" pageNumber="132" type="diagnosis">
<paragraph id="8BCB803AC147FFCBFF121A35D3AE7731" blockId="3.[151,1437,260,2013]" pageId="3" pageNumber="132">
<emphasis id="B9005C28C147FFCBFF121A35D27D7611" bold="true" box="[199,313,1087,1112]" pageId="3" pageNumber="132">Diagnosis</emphasis>
.
<taxonomicName id="4C74FBB9C147FFCBFE9F1A4AD1627611" box="[330,550,1088,1112]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="ephippia">
<emphasis id="B9005C28C147FFCBFE9F1A4AD1627611" box="[330,550,1088,1112]" italics="true" pageId="3" pageNumber="132">Oxyropsis ephippia</emphasis>
</taxonomicName>
is distinguished from its congeners by having a keel-like row of odontodes above the lateral-line canal on each median plate that is dominated by a single odontode (one closest to posterior margin of plate) conspicuously enlarged, typically one-third to one-half larger (along base-tip axis) than preceding one in same row (
<figureCitation id="134F9CBFC147FFCBFEBF1AA6D2F1768D" box="[362,437,1196,1221]" captionStart="FIGURE 1" captionStartId="1.[151,248,1975,1997]" captionTargetBox="[225,1358,195,1933]" captionTargetId="figure@1.[225,1359,195,1933]" captionTargetPageId="1" captionText="FIGURE 1. Left lateral view of the posterior caudal peduncle of (A) Oxyropsis ephippia, (B) O. wrightiana, (C) O. carinata, and (D) O. acutirostra. Scale is 1 mm." httpUri="https://zenodo.org/record/266899/files/figure.png" pageId="3" pageNumber="132">Figs. 1</figureCitation>
A and 4A) (
<emphasis id="B9005C28C147FFCBFD9D1AA7D123768D" box="[584,615,1197,1220]" italics="true" pageId="3" pageNumber="132">vs.</emphasis>
keel-like row immediately above lateral-line with odontodes of roughly equal size;
<figureCitation id="134F9CBFC147FFCBFEC91AC5D22376A1" box="[284,359,1231,1256]" captionStart="FIGURE 1" captionStartId="1.[151,248,1975,1997]" captionTargetBox="[225,1358,195,1933]" captionTargetId="figure@1.[225,1359,195,1933]" captionTargetPageId="1" captionText="FIGURE 1. Left lateral view of the posterior caudal peduncle of (A) Oxyropsis ephippia, (B) O. wrightiana, (C) O. carinata, and (D) O. acutirostra. Scale is 1 mm." httpUri="https://zenodo.org/record/266899/files/figure.png" pageId="3" pageNumber="132">Figs. 1</figureCitation>
B–D). It is further distinguished by having the sides of the trunk below the median series, approximately between plates 7 to 12, shielded by plates of the midventral series, with the exclusion of plates from the ventral series, which are visible only in ventral view of the trunk (
<figureCitation id="134F9CBFC147FFCBFC611B1DD0B37779" box="[948,1015,1303,1328]" captionStart="FIGURE 2" captionStartId="2.[151,248,1460,1482]" captionTargetBox="[161,1427,201,1425]" captionTargetId="figure@2.[150,1437,193,1439]" captionTargetPageId="2" captionText="FIGURE 2. Left lateral view of the trunk plates in (A) O. ephippia, (B) Oxyropsis wrightiana, (C), O. carinata, and (D) O. acutirostra. Vertical lines identify first plate in corresponding series of trunk plates. Scale is 5 mm." httpUri="https://zenodo.org/record/266900/files/figure.png" pageId="3" pageNumber="132">Fig. 2</figureCitation>
A) (vs. sides of the trunk shielded by plates of the midventral series and ventral series, the latter visible in lateral and ventral views of the trunk;
<figureCitation id="134F9CBFC147FFCBFAB21B36D3E17731" captionStart="FIGURE 2" captionStartId="2.[151,248,1460,1482]" captionTargetBox="[161,1427,201,1425]" captionTargetId="figure@2.[150,1437,193,1439]" captionTargetPageId="2" captionText="FIGURE 2. Left lateral view of the trunk plates in (A) O. ephippia, (B) Oxyropsis wrightiana, (C), O. carinata, and (D) O. acutirostra. Vertical lines identify first plate in corresponding series of trunk plates. Scale is 5 mm." httpUri="https://zenodo.org/record/266900/files/figure.png" pageId="3" pageNumber="132">Figs. 2</figureCitation>
B–D).
</paragraph>
<paragraph id="8BCB803AC147FFCBFF121B8ED072743D" blockId="3.[151,1437,260,2013]" pageId="3" pageNumber="132">
<taxonomicName id="4C74FBB9C147FFCBFF121B8ED2DB77D5" box="[199,415,1412,1436]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="ephippia">
<emphasis id="B9005C28C147FFCBFF121B8ED2DB77D5" box="[199,415,1412,1436]" italics="true" pageId="3" pageNumber="132">Oxyropsis ephippia</emphasis>
</taxonomicName>
is further distinguished by having 23 plates along the trunk median series (vs.
<quantity id="4C8C2DDFC147FFCBFAC31B8ED63E77D4" box="[1302,1402,1412,1437]" metricMagnitude="-1" metricUnit="m" metricValue="4.699" metricValueMax="4.826" metricValueMin="4.572" pageId="3" pageNumber="132" unit="in" value="18.5" valueMax="19.0" valueMin="18.0">18–19 in</quantity>
<taxonomicName id="4C74FBB9C147FFCBFA541B8ED25577F6" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="acutirostra">
<emphasis id="B9005C28C147FFCBFA541B8ED25577F6" italics="true" pageId="3" pageNumber="132">O. acutirostra</emphasis>
</taxonomicName>
and
<quantity id="4C8C2DDFC147FFCBFE811BADD2F97789" box="[340,445,1447,1472]" metricMagnitude="-1" metricUnit="m" metricValue="6.476999999999999" metricValueMax="6.604" metricValueMin="6.35" pageId="3" pageNumber="132" unit="in" value="25.5" valueMax="26.0" valueMin="25.0">25–26 in</quantity>
<taxonomicName id="4C74FBB9C147FFCBFE1F1BA2D11477F6" box="[458,592,1448,1471]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="carinata">
<emphasis id="B9005C28C147FFCBFE1F1BA2D11477F6" box="[458,592,1448,1471]" italics="true" pageId="3" pageNumber="132">O. carinata</emphasis>
</taxonomicName>
and
<taxonomicName id="4C74FBB9C147FFCBFD461BA2D0717789" box="[659,821,1448,1472]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="wrightiana">
<emphasis id="B9005C28C147FFCBFD461BA2D0717789" box="[659,821,1448,1472]" italics="true" pageId="3" pageNumber="132">O. wrightiana</emphasis>
</taxonomicName>
) and the caudal peduncle in cross section slightly compressed at the level of the median plates 20–23 (vs. posterior caudal peduncle depressed); from
<taxonomicName id="4C74FBB9C147FFCBFB2A1BC6D6D977AD" box="[1279,1437,1484,1508]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="acutirostra">
<emphasis id="B9005C28C147FFCBFB2A1BC6D6D977AD" box="[1279,1437,1484,1508]" italics="true" pageId="3" pageNumber="132">O. acutirostra</emphasis>
</taxonomicName>
by having median series of plates complete (vs. series incomplete;
<figureCitation id="134F9CBFC147FFCBFC7A1BE5D0B07441" box="[943,1012,1519,1544]" captionStart="FIGURE 2" captionStartId="2.[151,248,1460,1482]" captionTargetBox="[161,1427,201,1425]" captionTargetId="figure@2.[150,1437,193,1439]" captionTargetPageId="2" captionText="FIGURE 2. Left lateral view of the trunk plates in (A) O. ephippia, (B) Oxyropsis wrightiana, (C), O. carinata, and (D) O. acutirostra. Vertical lines identify first plate in corresponding series of trunk plates. Scale is 5 mm." httpUri="https://zenodo.org/record/266900/files/figure.png" pageId="3" pageNumber="132">Fig. 2</figureCitation>
D); from both
<taxonomicName id="4C74FBB9C147FFCBFB761BFAD606744E" box="[1187,1346,1520,1543]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="acutirostra">
<emphasis id="B9005C28C147FFCBFB761BFAD606744E" box="[1187,1346,1520,1543]" italics="true" pageId="3" pageNumber="132">O. acutirostra</emphasis>
</taxonomicName>
and
<taxonomicName id="4C74FBB9C147FFCBFA541BFAD2557465" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="wrightiana">
<emphasis id="B9005C28C147FFCBFA541BFAD2557465" italics="true" pageId="3" pageNumber="132">O. wrightiana</emphasis>
</taxonomicName>
by having a deeper caudal peduncle (mean depth 4.8% SL vs. 2.9% and 2.0%, respectively), and shorter caudal peduncle (mean length 36.0% SL vs. 42.4% and 44.4%, respectively); and from
<taxonomicName id="4C74FBB9C147FFCBFB501832D64A7406" box="[1157,1294,1592,1615]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="3" pageNumber="132" phylum="Chordata" rank="species" species="carinata">
<emphasis id="B9005C28C147FFCBFB501832D64A7406" box="[1157,1294,1592,1615]" italics="true" pageId="3" pageNumber="132">O. carinata</emphasis>
</taxonomicName>
by having a larger eye (mean orbital diameter 18.2% HL vs. 15.7% HL).
</paragraph>
</subSubSection>
<subSubSection id="C36ED3B1C147FFCDFF121875D76874C4" lastPageId="5" lastPageNumber="134" pageId="3" pageNumber="132" type="description">
<paragraph id="8BCB803AC147FFCCFF121875D271729D" blockId="3.[151,1437,260,2013]" lastBlockId="4.[151,1436,151,213]" lastPageId="4" lastPageNumber="133" pageId="3" pageNumber="132">
<emphasis id="B9005C28C147FFCBFF121875D21474D1" bold="true" box="[199,336,1663,1688]" pageId="3" pageNumber="132">Description</emphasis>
. General size small; largest specimen examined
<quantity id="4C8C2DDFC147FFCBFCBA188AD09774D1" box="[879,979,1664,1688]" metricMagnitude="-2" metricUnit="m" metricValue="4.87" pageId="3" pageNumber="132" unit="mm" value="48.7">48.7 mm</quantity>
SL. Head and trunk slender, moderately depressed (cleithral width 62.5–71.7% HL); greatest body depth at dorsal-fin origin (12.1–14.7% SL), only slightly deeper than head (11.6–12.7% SL). Dorsal profile straight to slightly convex from tip of snout to dorsal-fin origin (
<figureCitation id="134F9CBFC147FFCBFF4A18E6D24D754D" box="[159,265,1772,1797]" captionStart-0="FIGURE 3" captionStart-1="FIGURE 4" captionStartId-0="4.[151,248,1484,1506]" captionStartId-1="7.[151,248,1278,1300]" captionTargetBox-0="[151,1435,297,1462]" captionTargetBox-1="[151,1436,193,1255]" captionTargetId-0="figure@4.[151,1436,297,1463]" captionTargetId-1="figure@7.[151,1436,193,1256]" captionTargetPageId-0="4" captionTargetPageId-1="7" captionText-0="FIGURE 3. Oxyropsis ephippia, ANSP 177381, holotype, 42.0 mm SL, Guyana: Burro Burro River (Essequibo Basin). Photos by K. Luckenbill and T. Tran." captionText-1="FIGURE 4. Oxyropsis ephippia, ANSP 180670, paratype, XX mm SL, Guyana: Yuora River (trib Ireng, Takutu – Branco – Negro Dr., Amazon Basin)." httpUri-0="https://zenodo.org/record/266901/files/figure.png" httpUri-1="https://zenodo.org/record/266902/files/figure.png" pageId="3" pageNumber="132">Figs. 3-4</figureCitation>
). Dorsal profile of trunk straight from dorsal-fin origin to anteriormost procurrent ray of caudal fin. Ventral profile of head and abdomen approximately straight to slightly convex from snout tip to procurrent caudalfin rays. Dorsal and ventral profiles gently diverging from procurrent towards marginal rays of caudal fin. Snout smoothly rounded, parabolic in dorsal view; dorsal rostrum smooth, with paired smooth concavity in region anterior to naris. Dorsal surface between eyes and origin of dorsal fin convex in cross section, flattening caudally. Cross section of body between pectoral and pelvic-fin origins ovoid, becoming progressively fusiform-shaped (tapering posteriorly) between verticals lines through approximately tip of pectoral fin and median plates 17–18; gradually compressed at level of 6–7 most posterior median plates; CP mean width 75.5% (range 67.2–91.2%) of CP depth at plates 21–23).
</paragraph>
<caption id="DF0BD0B2C140FFCCFF421BC6D2877448" httpUri="https://zenodo.org/record/266901/files/figure.png" pageId="4" pageNumber="133" targetBox="[151,1435,297,1462]" targetPageId="4">
<paragraph id="8BCB803AC140FFCCFF421BC6D2877448" blockId="4.[151,1436,1484,1537]" pageId="4" pageNumber="133">
<emphasis id="B9005C28C140FFCCFF421BC6D25577A8" bold="true" box="[151,273,1484,1506]" pageId="4" pageNumber="133">FIGURE 3.</emphasis>
<taxonomicName id="4C74FBB9C140FFCCFECD1BC7D29877A8" box="[280,476,1484,1506]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="4" pageNumber="133" phylum="Chordata" rank="species" species="ephippia">
<emphasis id="B9005C28C140FFCCFECD1BC7D29877A8" box="[280,476,1484,1506]" italics="true" pageId="4" pageNumber="133">Oxyropsis ephippia</emphasis>
</taxonomicName>
, ANSP 177381, holotype, 42.0 mm SL, Guyana: Burro Burro River (Essequibo Basin). Photos by K. Luckenbill and T. Tran.
</paragraph>
</caption>
<paragraph id="8BCB803AC140FFCCFF121823D1B17574" blockId="4.[151,1437,1576,2033]" pageId="4" pageNumber="133">Eyes moderately large, orbital diameter 17.3–19.9% HL, center of eye positioned closer to posterior tip of pterotic than to tip of snout. Eye dorsolateral on head; fourth infraorbital lateroventral. Tip of adpressed dorsal fin reaching vertical through midlength of adpressed anal-fin spine. Pelvic fin not reaching plate anterior to base of anal-fin spine. Pectoral fin reaching vertical through posterior half of pelvic-fin spine length. Serrae (teeth) along posterior aspect of pectoral-fin spine present, less developed toward basal fifth and distal fifth of spine; best developed in specimens shorter than about 27.0 mm SL, wherein serrae are conical, moderately acute, each with tip oriented toward base of spine (retrorse); serrae become less conspicuous, more blunt with increasing standard length, and tips variably slanted toward base of spine.</paragraph>
<paragraph id="8BCB803AC140FFCDFF121942D6C173C1" blockId="4.[151,1437,1576,2033]" lastBlockId="5.[151,1437,151,2032]" lastPageId="5" lastPageNumber="134" pageId="4" pageNumber="133">
Dermal plates on trunk arranged in five longitudinal rows (
<figureCitation id="134F9CBFC140FFCCFCAE1942D0867528" box="[891,962,1864,1889]" captionStart="FIGURE 2" captionStartId="2.[151,248,1460,1482]" captionTargetBox="[161,1427,201,1425]" captionTargetId="figure@2.[150,1437,193,1439]" captionTargetPageId="2" captionText="FIGURE 2. Left lateral view of the trunk plates in (A) O. ephippia, (B) Oxyropsis wrightiana, (C), O. carinata, and (D) O. acutirostra. Vertical lines identify first plate in corresponding series of trunk plates. Scale is 5 mm." httpUri="https://zenodo.org/record/266900/files/figure.png" pageId="4" pageNumber="133">Fig. 2</figureCitation>
A): dorsal series 20; middorsal series 3; median series 23; midventral series 13 (including 4 plates between cleithrum lateral process and first plate of ventral series); ventral series typically 19-20. Ventral plates positioned either lateroventrally (1 to 4 and 11 to 20) or ventrally (5 to 10). Midventral plates deep above ventrally positioned plates in ventral series, shielding side of trunk below median series (
<figureCitation id="134F9CBFC140FFCCFE6C19D2D14775B8" box="[441,515,2008,2033]" captionStart="FIGURE 2" captionStartId="2.[151,248,1460,1482]" captionTargetBox="[161,1427,201,1425]" captionTargetId="figure@2.[150,1437,193,1439]" captionTargetPageId="2" captionText="FIGURE 2. Left lateral view of the trunk plates in (A) O. ephippia, (B) Oxyropsis wrightiana, (C), O. carinata, and (D) O. acutirostra. Vertical lines identify first plate in corresponding series of trunk plates. Scale is 5 mm." httpUri="https://zenodo.org/record/266900/files/figure.png" pageId="4" pageNumber="133">Fig. 2</figureCitation>
A). Lateral line complete, continuous along median series. Midventral plates articulating with median plates via interlocking digit-like projections; ventral and median plates in contact via overlapping smooth edges. Thoracic plates absent. Abdominal plates fully developed at
<quantity id="4C8C2DDFC141FFCDFBBE1EB6D7FC729D" box="[1131,1208,188,212]" metricMagnitude="-2" metricUnit="m" metricValue="2.9" pageId="5" pageNumber="134" unit="mm" value="29.0">29 mm</quantity>
SL (development of plates incipient at about
<quantity id="4C8C2DDFC141FFCDFE791ED5D16372BE" box="[428,551,223,248]" metricMagnitude="-2" metricUnit="m" metricValue="2.45" metricValueMax="2.5" metricValueMin="2.4" pageId="5" pageNumber="134" unit="mm" value="24.5" valueMax="25.0" valueMin="24.0">24–25 mm</quantity>
SL); abdominal plates arranged in paired series of 5–9 elongate lateral plates and medial series of 4–9 polygonal plates; three or more polyhedral plates posterior to pectoral girdle; patch of small polyhedral plates between abdominal series and anal plate. Single anal plate. Canal-bearing plate between cleithrum and infraorbital bones well developed, mostly ventral except for posterior ventro-lateral portion in contact with opercle, and with lateral pore of canal close to pore of infraorbital canal between infraorbital plates 4 and 5.
</paragraph>
<paragraph id="8BCB803AC141FFCDFF121F9ED6517029" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">
Odontodes uniformly small and evenly distributed dorsally on head, progressively arranged in longitudinal rows toward sides and dorsum of trunk. Subtle keel-like longitudinal row of odontodes immediately above lateralline canal on each median plate is dominated by single odontode (close to posterior plate margin above pore of lateral-line canal) that is conspicuously enlarged, typically one-third to one-half longer (along base-tip axis) than preceding one in same row (
<figureCitation id="134F9CBFC141FFCDFE091C2ED15F7075" box="[476,539,548,573]" captionStart="FIGURE 1" captionStartId="1.[151,248,1975,1997]" captionTargetBox="[225,1358,195,1933]" captionTargetId="figure@1.[225,1359,195,1933]" captionTargetPageId="1" captionText="FIGURE 1. Left lateral view of the posterior caudal peduncle of (A) Oxyropsis ephippia, (B) O. wrightiana, (C) O. carinata, and (D) O. acutirostra. Scale is 1 mm." httpUri="https://zenodo.org/record/266899/files/figure.png" pageId="5" pageNumber="134">Fig. 1</figureCitation>
A); keel-like row most noticeable in dorsal view of trunk between median plates 8 and 18. Enlarged odontode usually paired with similarly enlarged odontode below lateral-line canal.
</paragraph>
<paragraph id="8BCB803AC141FFCDFF121C66D210715C" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">Midventral plates 8 to 13 with area of slightly enlarged odontodes, particularly along margin of plates; odontodes less noticeable with increasing SL. On ventral side of body, odontodes tightly and evenly arranged over ventral canal-bearing plates, abdominal plates, anal plate, and ventral series of plates posterior to anal plate. Odontodes on ventral margin of pelvic-fin spine enlarged; odontodes on ventral margin of pectoral-fin spine moderate in size.</paragraph>
<paragraph id="8BCB803AC141FFCDFF121D15D11C71C9" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">Anterior tip of rostral plate with narrow pad of soft tissue; odontodes dorsal and ventral to tip irregularly arranged. Anterior and lateral rostral snout plates not noticeably reflected ventrally. Nuchal plate width about 2.5 times width of dorsal-fin spine at origin.</paragraph>
<paragraph id="8BCB803AC141FFCDFF121D86D7A27181" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">Teeth small, slender; premaxillary teeth 19–27, mandibular teeth 16–26. Oral disk round, papillose. Maxillary barbels present, short. Dorsal fin i,7; pectoral fin i,6; pelvic fin i,5, anal fin i,5. Adipose fin absent.</paragraph>
<paragraph id="8BCB803AC141FFCDFF121DD9D134761F" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">
<emphasis id="B9005C28C141FFCDFF121DD9D2E971A5" bold="true" box="[199,429,979,1004]" pageId="5" pageNumber="134">Sexual dimorphism</emphasis>
. Male genital papilla present. In males, odontodes small and tightly packed on plates 2–4 of trunk ventral series, lateral to anal plate and anus region; odontode arrangement more spaced on anal plate and on plates between anal fin and anus. In females, distribution of odontodes on same ventral plates not noticeably different from patterns on adjacent plates.
</paragraph>
<paragraph id="8BCB803AC141FFCDFF121A6AD7EA7707" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">
<emphasis id="B9005C28C141FFCDFF121A6AD2037630" bold="true" box="[199,327,1120,1145]" pageId="5" pageNumber="134">Coloration</emphasis>
. Ground color in ethanol tan (
<figureCitation id="134F9CBFC141FFCDFD421A6AD0477630" box="[663,771,1120,1145]" captionStart-0="FIGURE 3" captionStart-1="FIGURE 4" captionStartId-0="4.[151,248,1484,1506]" captionStartId-1="7.[151,248,1278,1300]" captionTargetBox-0="[151,1435,297,1462]" captionTargetBox-1="[151,1436,193,1255]" captionTargetId-0="figure@4.[151,1436,297,1463]" captionTargetId-1="figure@7.[151,1436,193,1256]" captionTargetPageId-0="4" captionTargetPageId-1="7" captionText-0="FIGURE 3. Oxyropsis ephippia, ANSP 177381, holotype, 42.0 mm SL, Guyana: Burro Burro River (Essequibo Basin). Photos by K. Luckenbill and T. Tran." captionText-1="FIGURE 4. Oxyropsis ephippia, ANSP 180670, paratype, XX mm SL, Guyana: Yuora River (trib Ireng, Takutu – Branco – Negro Dr., Amazon Basin)." httpUri-0="https://zenodo.org/record/266901/files/figure.png" httpUri-1="https://zenodo.org/record/266902/files/figure.png" pageId="5" pageNumber="134">Figs. 3–4</figureCitation>
). Dark brown punctiform epidermal melanophores in small clusters irregularly distributed on dorsal and lateral portions of head (
<figureCitation id="134F9CBFC141FFCDFC671A8ED74776D4" box="[946,1027,1156,1181]" captionStart="FIGURE 4" captionStartId="7.[151,248,1278,1300]" captionTargetBox="[151,1436,193,1255]" captionTargetId="figure@7.[151,1436,193,1256]" captionTargetPageId="7" captionText="FIGURE 4. Oxyropsis ephippia, ANSP 180670, paratype, XX mm SL, Guyana: Yuora River (trib Ireng, Takutu – Branco – Negro Dr., Amazon Basin)." httpUri="https://zenodo.org/record/266902/files/figure.png" pageId="5" pageNumber="134">Fig. 4</figureCitation>
), sometimes leaving pale middorsal region on snout (
<figureCitation id="134F9CBFC141FFCDFE8B1AADD2E17689" box="[350,421,1191,1216]" captionStart="FIGURE 3" captionStartId="4.[151,248,1484,1506]" captionTargetBox="[151,1435,297,1462]" captionTargetId="figure@4.[151,1436,297,1463]" captionTargetPageId="4" captionText="FIGURE 3. Oxyropsis ephippia, ANSP 177381, holotype, 42.0 mm SL, Guyana: Burro Burro River (Essequibo Basin). Photos by K. Luckenbill and T. Tran." httpUri="https://zenodo.org/record/266901/files/figure.png" pageId="5" pageNumber="134">Fig. 3</figureCitation>
). Dark brown deep-lying punctiform melanophores roughly arranged in six middorsal blotches (typically, one anterior to dorsal fin, one at base of dorsal fin, and four posterior to dorsal fin). Brown midlateral stripe through cleithrum lateral process, along trunk median and midventral series of plates to base of caudal fin; stripe more diffuse posteriorly, variably connected to darkened lanceolate plates at base of caudal fin. Dorsal portion of cleithrum lateral process, in contact with first midventral plate, dark brown.
</paragraph>
<paragraph id="8BCB803AC141FFCDFF121B53D2077795" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">Ventral surface of head and trunk, between posterior lip and anus, pale, scarcely pigmented. Punctiform melanophores concentrated on anterior lip, extended laterally to barbels; scattered at bases of anal, pectoral and pelvic fins. Uneven sprinkling of deep-lying dark melanophores over ventral canal-bearing plates and along ventral series of plates.</paragraph>
<paragraph id="8BCB803AC141FFCDFF121BECD76874C4" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">
Caudal-fin with 6–7 vertical bands of brown melanophores restricted to fin rays; proximal bands variably coalesced into darker, slightly asymmetrical blotch on basal lower half of caudal fin; basal blotch variably connected with dark lanceolate plates (
<figureCitation id="134F9CBFC141FFCDFD831827D1DF740F" box="[598,667,1581,1606]" captionStart="FIGURE 5" captionStartId="9.[151,248,1901,1923]" captionTargetBox="[228,1354,195,1874]" captionTargetId="figure@9.[228,1355,195,1874]" captionTargetPageId="9" captionText="FIGURE 5. Pigmentation pattern in caudal fin of (A) Oxyropsis ephippia, 29.1 mm SL (ANSP 180664) (B) Oxyropsis wrightiana, 50.1 mm SL (ANSP 178336), (C) Hypoptopoma guianense, 41.4 mm SL (AUM 35652), (D) Hypoptopoma psilogaster, 34.9 mm SL (ANSP 180658). Vertical line points to enlarged odontode on posterior margin of median plate, immediately dorsal to pore of lateral-line canal. Scale is 5 mm. Photos by K. Luckenbill and T. Tran." httpUri="https://zenodo.org/record/266903/files/figure.png" pageId="5" pageNumber="134">Fig. 5</figureCitation>
A). Other fins with faint dark bands along anterior edge of spine, continuous with diffuse bands on branched rays (roughly, 8–9 bands on dorsal fin, 3–4 on anal fin, five on pectoral fin, and three on pelvic fin). Interradial membranes of all fins clear, unpigmented.
</paragraph>
</subSubSection>
<subSubSection id="C36ED3B1C141FFCDFF121892D04D75B9" pageId="5" pageNumber="134" type="distribution">
<paragraph id="8BCB803AC141FFCDFF121892D0027576" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">
<emphasis id="B9005C28C141FFCDFF121892D21C74F8" bold="true" box="[199,344,1688,1713]" pageId="5" pageNumber="134">Distribution</emphasis>
.
<taxonomicName id="4C74FBB9C141FFCDFEB91893D10D74F9" box="[364,585,1688,1712]" class="Actinopterygii" family="Loricariidae" genus="Oxyropsis" kingdom="Animalia" order="Siluriformes" pageId="5" pageNumber="134" phylum="Chordata" rank="species" species="ephippia">
<emphasis id="B9005C28C141FFCDFEB91893D10D74F9" box="[364,585,1688,1712]" italics="true" pageId="5" pageNumber="134">Oxyropsis ephippia</emphasis>
</taxonomicName>
is recorded from
<collectingCountry id="F363C0AAC141FFCDFCF01892D03F74F9" box="[805,891,1688,1712]" name="Guyana" pageId="5" pageNumber="134">Guyana</collectingCountry>
(
<figureCitation id="134F9CBFC141FFCDFC451892D09C74F8" box="[912,984,1688,1713]" captionStart="FIGURE 6" captionStartId="10.[151,248,1130,1152]" captionTargetBox="[152,1435,193,1108]" captionTargetId="figure@10.[152,1435,193,1108]" captionTargetPageId="10" captionText="FIGURE 6. Drainage map of northern South America showing distribution of species of Oxyropsis (modified from Aquino &amp; Schaefer, 2002). Symbols may indicate more than one collection locality; open symbol represents type locality of O. ephippia." httpUri="https://zenodo.org/record/266904/files/figure.png" pageId="5" pageNumber="134">Fig. 6</figureCitation>
) on both sides of the shallow divide separating the
<collectingCountry id="F363C0AAC141FFCDFE9418B1D2F7749D" box="[321,435,1723,1748]" name="Guyana" pageId="5" pageNumber="134">Essequibo</collectingCountry>
watershed (Atlantic Drainage) from the Branco (Negro–Amazonas Drainage). In the
<collectingCountry id="F363C0AAC141FFCDFF4218D5D24D74B1" box="[151,265,1759,1784]" name="Guyana" pageId="5" pageNumber="134">Essequibo</collectingCountry>
Basin, it is known from the mainstem
<collectingCountry id="F363C0AAC141FFCDFD0D18D5D00974B1" box="[728,845,1759,1784]" name="Guyana" pageId="5" pageNumber="134">Essequibo</collectingCountry>
, and two of its left bank tributaries (Burro Burro, Rupununi, and their tributaries). In the Branco Basin it is know from the Yuora River, a small tributary of the Ireng draining the southeastern limits of the Pakaraima Mountains.
</paragraph>
<paragraph id="8BCB803AC141FFCDFF121943D04D75B9" blockId="5.[151,1437,151,2032]" pageId="5" pageNumber="134">
The cichlid
<taxonomicName id="4C74FBB9C141FFCDFE9A1940D16F7528" box="[335,555,1865,1889]" class="Actinopterygii" family="Cichlidae" genus="Guianacara" kingdom="Animalia" order="Perciformes" pageId="5" pageNumber="134" phylum="Chordata" rank="species" species="dacrya">
<emphasis id="B9005C28C141FFCDFE9A1940D16F7528" box="[335,555,1865,1889]" italics="true" pageId="5" pageNumber="134">Guianacara dacrya</emphasis>
</taxonomicName>
described by Arbour &amp; López–Fernández (2011) occurs in many of the same streams (e.g., Burro Burro, Rupununi and Yuora), and shares a similar distribution pattern on both sides of the
<collectingCountry id="F363C0AAC141FFCDFF42199AD24D75E0" box="[151,265,1936,1961]" name="Guyana" pageId="5" pageNumber="134">Essequibo</collectingCountry>
–Branco divide. The two watersheds are intermittently connected in wet years (between May and September) when the Rupununi savannas between the Pakaraima and Kanuku mountains becomes a vast flooded plain known as Lake Amaku (Lowe–
<bibRefCitation id="EFE5FDCBC141FFCDFDEF19DDD1B975B9" author="McConnell" box="[570,765,2007,2032]" pageId="5" pageNumber="134" refString="Lowe-McConnell, R. H. (1964) The fishes of the Rupununi savanna district of British Guiana, South America. Part 1. Ecological groupings of fish species and effects of the seasonal cycle on the fish. Journal of the Linnean Society (Zoology), 45, 103 - 144. http: // dx. doi. org / 10.1111 / j. 1096 - 3642.1964. tb 00490. x" type="journal article" year="1964">McConnell 1964</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>
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