261 lines
32 KiB
XML
261 lines
32 KiB
XML
<document id="FA8BF66FBBFEAF874F7E911DC79D9958" ENCODING="UTF-8" ID-GBIF-Dataset="48b90e38-2d19-4ba6-8ef6-3aeb09b34837" ModsDocID="z01386p059" checkinTime="1247126657571" checkinUser="thomas" docAuthor="Katiane M. Ferreira & Alexandre C. Ribeiro" docDate="2007" docId="78B2AE08BBCCEE40065D0DE031538221" docLanguage="en" docName="2007_Ferreira_Ribeiro_gg1.xml" docOrigin="Zootaxa 1386" docSource="http://www.zoobank.org/urn:lsid:zoobank.org:pub:8BD29F3C-33F7-4939-8703-5C46DCDAF814" docTitle="Corumbataia britskii Ferreira & Ribeiro, 2007, new species" docType="treatment" docVersion="13" lastPageNumber="66" masterDocId="7D8114ECC8952492D86A2A9FEEFC8ADD" masterDocTitle="Corumbataia britskii (Siluriformes: Loricariidae: Hypoptopomatinae) a new species from the upper Rio Parana basin, Mato Grosso do Sul, Central Brazil." masterLastPageNumber="68" masterPageNumber="59" pageNumber="60" updateTime="1701314539607" updateUser="plazi">
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<mods:mods id="C3B2A23D104454A0A645A6B9D2364A4C" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="E7B5FE9333F409DC239F1789C47607F6">
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<mods:title id="C13910427A4F1D6208BFCF3CCA8DEDAC">Corumbataia britskii (Siluriformes: Loricariidae: Hypoptopomatinae) a new species from the upper Rio Parana basin, Mato Grosso do Sul, Central Brazil.</mods:title>
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<mods:name id="EEBEDD36E5112ADC8C0CFAC10AD2617B" type="personal">
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<mods:role id="8E936E019C41915902AFC11273DA3449">
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<mods:roleTerm id="8B61CABB80FCD518610BC49024103418">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="67163B762CAE74AF09515C4F57518DCE">Katiane M. Ferreira</mods:namePart>
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</mods:name>
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<mods:roleTerm id="154403EF6587C5A8543F8EEF2062B8B5">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="CD76DAB90F29FF81370F590854FEE1C7">Alexandre C. Ribeiro</mods:namePart>
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</mods:name>
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<mods:typeOfResource id="213C1A0F7883B18A736AC7D2223D99E9">text</mods:typeOfResource>
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<mods:titleInfo id="5375AF7B2A3BA9670059A31D9B2AFAF9">
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<mods:title id="F533C2611896C7094872934D21C0CFFE">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="7318A8C4BEF2F446144D1D5D472DFD60">
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<mods:date id="4DF3A4492CACE66DF72C9CB63B70FAA4">2007</mods:date>
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<mods:detail id="75AA373DA179B1F6A36B66319797803C" type="volume">
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<mods:number id="48B3397399CE0A2071A3D6ECF97BE049">1386</mods:number>
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<mods:start id="3962AF28476D12B72B183C5AFD31A94C">59</mods:start>
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<mods:location id="74618E26786E8DDD120800C2DAB5BC2F">
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<mods:url id="E5CE741D4413DD3651A51BC4DE295775">http://www.zoobank.org/urn:lsid:zoobank.org:pub:8BD29F3C-33F7-4939-8703-5C46DCDAF814</mods:url>
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</mods:location>
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<mods:classification id="C31BE3F24A813379124893F37F8AB0A2">journal article</mods:classification>
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<mods:identifier id="A71AA66695BB9C0E7E5B652571F330DB" type="Plazi-Custom">z01386p059</mods:identifier>
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<treatment id="78B2AE08BBCCEE40065D0DE031538221" ID-DOI="http://doi.org/10.5281/zenodo.6243997" ID-GBIF-Taxon="100123397" ID-Zenodo-Dep="6243997" LSID="urn:lsid:plazi:treatment:78B2AE08BBCCEE40065D0DE031538221" httpUri="http://treatment.plazi.org/id/78B2AE08BBCCEE40065D0DE031538221" lastPageNumber="66" pageNumber="60">
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<subSubSection id="5210D7E8B63A3FF898D1A692095C0C5F" type="nomenclature">
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<paragraph id="A72B6DC5E4046F1F771B3539033364A5" pageNumber="60">
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<taxonomicName id="F5C4B60698A803AEC10F33EE851615C3" ID-CoL="6B63P" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="60" phylum="Chordata" rank="species" species="britskii">Corumbataia britskii</taxonomicName>
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,
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<taxonomicNameLabel id="C1B2B925D514336DE2593196DA886F39" rank="species">new species</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection id="C8C7C0ECE4BE1D03624814D60963CD11" type="description">
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<paragraph id="48C1635AA8FC24EE82243B2359B8DA29" pageNumber="60">Fig. 1</paragraph>
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</subSubSection>
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||
<subSubSection id="E03D4A25AB9DB55152FCC4FCC96C2DD9" type="nomenclature">
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<paragraph id="D3B327E751CEE1B82C06A045E499E601" pageNumber="60">
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||
<materialsCitation id="83264DF8C295D76D433319B65181122E" ID-GBIF-Occurrence="923892964" country="Brazil" stateProvince="State of Mato Grosso do Sul">
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<typeStatus id="4AD5B0734CFA9DF07B34E68D3D0172DB">Holotype</typeStatus>
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||
.
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<collectionCode id="2EA2D94D97176D81DBAFFBDE1A490BB9" collectionName="LIRP">LIRP</collectionCode>
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5884, 26.0 mm SL,
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<collectingCountry id="598F349065B6524CC9489AF57017941F">Brazil</collectingCountry>
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,
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<collectingRegion id="7F1819CC22E46A0167FAF1C8401C4834">State of Mato Grosso do Sul</collectingRegion>
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,
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<normalizedToken id="BF6B8BEBC83CAFB3AA7A21C8BBB31E7D" originalValue="Chapadão">Chapadao</normalizedToken>
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do Sul,
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<normalizedToken id="FF80859F817D0556A3F53ED8F07A66F4" originalValue="Córrego">Corrego</normalizedToken>
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||
Pedra Azul (
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||
<geoCoordinate id="4F5ADCB3E5D2C558193C5A6676FDD462" direction="south" orientation="latitude" value="-19.204168">19°12’15”S</geoCoordinate>
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<geoCoordinate id="7D7C83A16D35E9B010EA98CA9B55416D" direction="west" orientation="longitude" value="-52.731945">52°43’55”W</geoCoordinate>
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), Rio
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<normalizedToken id="56E548A95FBC7EA6B45DB81B129E9816" originalValue="Sucuriú">Sucuriu</normalizedToken>
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||
, upper Rio
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<normalizedToken id="9E6942A6E2ACAAE25049C674C53CA936" originalValue="Paraná">Parana</normalizedToken>
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basin (Fig. 2),
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<date id="715A64FEB52B43DB39F9781984BA522C" day="10" month="10" value="2003-10-10" year="2003">10 October 2003</date>
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, K.M. Ferreira, R.Campos-da-Paz & E.
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<normalizedToken id="84C65380F2BB72B084F31B15660C674F" originalValue="Sá">Sa</normalizedToken>
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.
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</materialsCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="A8AD19772287A832CEA743AF2F622E64" type="nomenclature">
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<paragraph id="95DD81C37FA301FDAEB7C3D10DE7064E" pageNumber="60">
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<materialsCitation id="FD782C8D11A61D08E3E3683B23D003E8" ID-GBIF-Occurrence="923892967" country="Brazil" stateProvince="State of Mato Grosso do Sul">
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<typeStatus id="B232099AF656E2D6F1E3FCDFA450225B">Paratypes</typeStatus>
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.
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<collectionCode id="A73A0709D520D38484EC6EDE7222205C" collectionName="LIRP">LIRP</collectionCode>
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4937, 5, 13.3-27.0 mm SL (2, 19.7-24.4 mm SL, c&s), as the holotype.
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</materialsCitation>
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<materialsCitation id="524756659BD3CFDA51BD693CC1C58639" ID-GBIF-Occurrence="923892965" country="Brazil" stateProvince="State of Mato Grosso do Sul">
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All from
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<collectingCountry id="1D443F4C5FB406F7E6919F27682B0A0E">Brazil</collectingCountry>
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,
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<collectingRegion id="314DDBEC4022654375D6B10BF44EC729">Mato Grosso do Sul State</collectingRegion>
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,
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<normalizedToken id="6E380EE04B8F01F2E9FA745CA321C3E5" originalValue="Chapadào">Chapadao</normalizedToken>
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||
do Sul, Rio
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||
<normalizedToken id="47E1857D3600890198C1FA2B2DB50F92" originalValue="Sucuriú">Sucuriu</normalizedToken>
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||
, upper Rio
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||
<normalizedToken id="8959F10BF16C18C9716264D050747248" originalValue="Paraná">Parana</normalizedToken>
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||
basin:
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||
<collectionCode id="1A102A81F8AD2A1FA998802B5EA66E05" collectionName="LIRP">LIRP</collectionCode>
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||
5897 (2, 17.0-23.6 mm SL, c&s),
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<normalizedToken id="CCA330F53AD0041FF6364681F12AC9D8" originalValue="Córrego">Corrego</normalizedToken>
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||
Pedra Azul (
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||
<geoCoordinate id="4EF63D06CA98DDBB6F8E858C159F4390" direction="south" orientation="latitude" value="-19.204168">19°12’15”S</geoCoordinate>
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||
<geoCoordinate id="F478D28974E296463A75000D33CA364B" direction="west" orientation="longitude" value="-52.731945">52°43’55”W</geoCoordinate>
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),
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<date id="DBB6225A8AD9294286252CF1E114C011" day="23" month="08" value="2006-08-23" year="2006">23 August 2006</date>
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, A.C. Ribeiro, M. Carvalho & O. Froehlich;
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||
</materialsCitation>
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||
<materialsCitation id="D9571A25D23099FAD775EBC9A7F80581" ID-GBIF-Occurrence="923892970" country="Brazil" stateProvince="State of Mato Grosso do Sul">
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||
<collectionCode id="CCA58FEE9196561FB0D76EBDC7BDE40C" collectionName="LIRP">LIRP</collectionCode>
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||
5898, (8, 17.6-24.7 mm SL),
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<normalizedToken id="126F7F7AADC50F7B7026D622A82FC5AE" originalValue="Córrego">Corrego</normalizedToken>
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||
Fazendinha (
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||
<geoCoordinate id="EFF328EAF8D7118C34C6D841CCB7DFA7" direction="south" orientation="latitude" value="-19.245277">19º14’43”S</geoCoordinate>
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||
<geoCoordinate id="4B47F64B0B7B52246EEDE726F7892124" direction="west" orientation="longitude" value="-52.653114">52º39’11.2”W</geoCoordinate>
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||
),
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||
<date id="624708E0B6ECFCDC7D1212173C6CF624" day="25" month="08" value="2006-08-25" year="2006">25 August 2006</date>
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||
, A.C. Ribeiro, M. Carvalho & O. Froehlich.
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</materialsCitation>
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="4E40A32AFDD44245DEBAEC7479BC4CF7" type="diagnosis">
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<paragraph id="94A0BC0B6E0CEA0A46A6ED6ED20CEF23" pageNumber="61">
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Diagnosis.
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<taxonomicName id="7452DD5B9FE2109207E5EEADFD33BFCB" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="britskii">Corumbataia britskii</taxonomicName>
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differs from congeners by having a more depressed head profile (vs. more rounded in
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<taxonomicName id="4388E4FD1251E5DA244EAC1893C43F05" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
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and
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<taxonomicName id="6A224185EA3CDEF59FB41B9B953A2F0F" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
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) (Fig. 3), by having a more developed and conspicuous tuft of enlarged odontodes on the tip of the supraoccipital (vs. its reduced condition found in
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<taxonomicName id="F1EC97EDDD178AD06287B10D291D7866" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
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and
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<taxonomicName id="E5DE79E756D95DD347F9A3373FF57D42" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
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) (Fig. 3), and by heaving a partially enclosed arrector fossae (vs. an almost completely enclosed arrector fossae in
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<taxonomicName id="496B9DDB3424F57640A8C3028CFA7D6E" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
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and
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<taxonomicName id="B0C44982A9BF94A6B2CDB5C6918EEB8C" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="61" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
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) (Fig. 4).
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="C331E02B3250DA1E80EBA3BDB372D4BA" type="description">
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||
<paragraph id="305BC59F9B53F19D6006AB9C96CBBB9A" pageNumber="61">Description. Morphometric and meristic data given in Tables 1 and 2, respectively. Dorsal profile of the body convex from snout tip to dorsal-fin origin; slightly concave at dorsal-fin base; straight from end of dorsal-fin base to caudal-fin origin. Ventral profile of the body straight from the snout tip to anus; straight at analfin base; straight from end of anal-fin base to caudal-fin origin. Greatest body depth at dorsal-fin origin; least body depth at caudal peduncle. Greatest body width at opercular or cleithral regions. Body progressively narrowing caudally from cleithrum. Head rounded anteriorly in dorsal view; eyes dorsolaterally positioned. Oral disk slightly elliptical, narrowing posteriorly. Anterior oral disk lobe covered by papilla of about same size. Posterior disk lobe covered by papilla which decrease in size posteriorly. Maxillary barbel atrophied. Compound pterotic-supracleithrum-posttemporal with small perforations along its median and inferior margins.</paragraph>
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<paragraph id="E1AA06AA8A5EC100665DAC5034DF87C1" pageNumber="61">Body entirely covered by plates, except on rostrum, region overlying opening of swim bladder capsule, around anus, and in pectoral-, pelvic- and anal-fin insertions. Scapular bridge exposed and covered by odontodes. Abdomen in adult specimens covered with small plates which are absent in young specimens. Body plates completely covered by odontodes. Larger odontodes neighboring the supraoccipital bone. Lateral line interrupted by gaps in middle region and in caudal peduncle in a young c&s specimen, but not interrupted in larger specimens.</paragraph>
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<paragraph id="709F784C13A7D244FBA535DC689F6A85" pageNumber="61">Dorsal-fin origin located posteriorly to vertical through pelvic-fin origin. Adpressed pectoral fin extending over the pelvic-fin origin. Tip of pelvic fin reaching anal-fin origin in males and shorter in females.</paragraph>
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<paragraph id="2B323E893AC8FB6293CEB25FE9F1DA35" lastPageNumber="62" pageNumber="61">Color in alcohol. Dark brown coloration on dorsal and lateral regions of body; ventral region yellowish and belly slight grayish. Numerous dark brown chromatophores distributed over head, forming a diffuse stripe from snout tip below eyes to posterior region of head. Chromatophores concentrated on dorsal- and anal-fin bases. Dark brown stripe extending from end of dorsal- to caudal-fin origin. Large diffuse dark brown midlateral stripe from snout tip, crossing eyes, extending to caudal-fin base. Large ventral dark brown stripe from around urogenital papillae to caudal-fin origin. Abdomen mostly unpigmented. Three to four transverse darkbrown stripes on dorsal-fin. Unbranched rays of pectoral, pelvic and anal fins with several scattered, widespread chromatophores not arranged in stripes. Caudal-fin mostly dark-brown with two unpigmented round spots on caudal-fin lobes.</paragraph>
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</subSubSection>
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||
<subSubSection id="2F37EBE176D00521DD48183AF0BB04B1" type="biology_ecology">
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<paragraph id="65C7AA679292D1B54BCAB65FF8BD5A67" pageNumber="62">
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Ecological notes. The new species was sampled in deforested areas in moderate to fast current streams.
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<taxonomicName id="67A71F828239C45828A0EBC05F1F12B2" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="62" phylum="Chordata" rank="species" species="britskii">Corumbataia britskii</taxonomicName>
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was sampled in association with aquatic macrophytes or in the submerged portion of marginal vegetation. In its gut contents were found filamentous blue-green algae, chlorophyts, diatoms and periderm.
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="93BCFB4E07206AB79181DADED2D4CAA4" type="distribution">
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<paragraph id="E07E64A13AF0A94D0EDE6A8BD0B09F29" pageNumber="62">
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Distribution. Known just from two streams,
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||
<normalizedToken id="316DB2B65B02EB9AAAC224BEA452639B" originalValue="Córrego">Corrego</normalizedToken>
|
||
Pedra Azul (type locality) and
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||
<normalizedToken id="398D257D6CFE1945B129C494A6C6D5AD" originalValue="Córrego">Corrego</normalizedToken>
|
||
Fazendinha (
|
||
<geoCoordinate id="76667CA2FD2374EA10CFB375E37C83BF" direction="south" orientation="latitude" value="-19.204168">19°12’15”S</geoCoordinate>
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||
<geoCoordinate id="F65DBD245CCF1E110305269713079CBF" direction="west" orientation="longitude" value="-52.731945">52°43’55”W</geoCoordinate>
|
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and
|
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<geoCoordinate id="F3E003E6E00C5319F218F76ECCE0EC89" direction="south" orientation="latitude" value="-19.245277">19°14’43”S</geoCoordinate>
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||
<geoCoordinate id="B89C518B7A98216423EB859227B7E7A7" direction="west" orientation="longitude" value="-52.653114">52°39’11.2”W</geoCoordinate>
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, respectively). Both streams are tributaries of the Rio
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<normalizedToken id="33EA8D8995CB511F82E78479B3F1EFC1" originalValue="Sucuriú">Sucuriu</normalizedToken>
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, a right tributary of the upper Rio
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<normalizedToken id="FB1614A83BB4AB09240C7D6A0FBFBAA5" originalValue="Paraná">Parana</normalizedToken>
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basin in the Mato Grosso do Sul State, Brazil.
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="48B398214CDF81BF6ECBA86534193FAD" type="etymology">
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<paragraph id="25FF458942FF058713EB52F940947C32" pageNumber="63">
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Etymology. Named after Dr. Heraldo A. Britski, Museu de Zoologia da Universidade de
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<normalizedToken id="D6626B4EBD4A18C7D1B917F704F4777D" originalValue="São">Sao</normalizedToken>
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Paulo (
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<collectionCode id="D37A62F5A0885AA924A5BBABCD7532F5" collectionName="MZUSP">MZUSP</collectionCode>
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), in recognition of his many contributions to our understanding of Hypoptopomatinae catfishes.
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</paragraph>
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||
</subSubSection>
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<subSubSection id="C503ADD9C9BBB7778A77AD4DDF66DC0B" type="discussion">
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<paragraph id="3E601257368D6A7F235F1800E781B53B" pageNumber="64">Discussion</paragraph>
|
||
<paragraph id="FEE6902A850387F6551A174F1F133261" lastPageNumber="65" pageNumber="64">
|
||
The phylogenetic relationships of
|
||
<taxonomicName id="DF9619F956714147D6C3D7F3A1A3903A" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
is presently somewhat obscure. Schaefer (1991, 1997, 1998) provided a phylogenetic analysis of the Hypoptopomatinae at the level of genera, recognizing it as a monophyletic unit and providing evidence for two natural subgroups within the subfamily, the tribes Otothyrini and Hypoptopomatini. Britski (1997), based on the set of characters presented by Schaefer (1991), included
|
||
<taxonomicName id="29A54F686C86C0328C6D408B0BC889C3" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
in the Otothyrini. This generic placement was not tested subsequently by Schaefer (1998), who did not include
|
||
<taxonomicName id="5A23486F95DDD3BEA22E68259335F179" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
in his analysis. Recent papers (Ribeiro et al. 2002; Ribeiro et al. 2005) concerning the inclusion of new taxa within Schaefer’s phylogenetic framework have not provided substantial changes in hypoptopomatine topology, and are in agreement with Schaefer’s main conclusions. However, Gauger & Buckup (2005), in including in a phylogenetic analysis two new species of
|
||
<taxonomicName id="5EA82B5A1FD4EE03BCAA07F1889353FB" family="Loricariidae" genus="Parotocinclus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Parotocinclus</taxonomicName>
|
||
, several undescribed cascudinhos, as well as
|
||
<taxonomicName id="94067E6CA6A273E1A826F9123C1BC509" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
, concluded that Schaefer’s Otothyrini is not monophyletic. These authors presented two alternative cladograms in their reanalysis of the Hypoptopomatine. In one of them,
|
||
<taxonomicName id="0FF766235CB59F922F1D0F977DF437F6" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
appears in a group that includes
|
||
<taxonomicName id="FED941242252772C015AE39A3355046B" LSID-ZBK="urn:lsid:zoobank.org:act:FB999F6C-F2A0-40D2-87E1-18DE54A017FC" family="Loricariidae" genus="Microlepidogaster" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Microlepidogaster Eigenmann & Eigenmann 1889:8" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Microlepidogaster</taxonomicName>
|
||
,
|
||
<taxonomicName id="1E6852C8067A97F9D496597BB96E78A2" LSID-ZBK="urn:lsid:zoobank.org:act:9AE4E69F-FBEF-4AF0-BE2E-4FCBE66F07FD" family="Loricariidae" genus="Pseudotocinclus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudotocinclus Nichols 1919:534" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Pseudotocinclus</taxonomicName>
|
||
,
|
||
<taxonomicName id="9E7D6D4D0A10D7C02798FA480F1199F3" LSID-ZBK="urn:lsid:zoobank.org:act:7DBCF48C-5BC0-4B02-870A-41B2639BB03C" family="Loricariidae" genus="Schizolecis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Schizolecis Britski & Garavello 1984:228" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Schizolecis</taxonomicName>
|
||
,
|
||
<taxonomicName id="F0D2CCAD3E4BFCE750DC6D45FE1E74D1" LSID-ZBK="urn:lsid:zoobank.org:act:C5814CEC-020B-4B86-8046-6F9F7AC013AE" family="Loricariidae" genus="Pseudotothyris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudotothyris Britski & Garavello 1984:232" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Pseudotothyris</taxonomicName>
|
||
and
|
||
<taxonomicName id="50CC931B97610E81C1BBA393BDBB9D28" LSID-ZBK="urn:lsid:zoobank.org:act:482DEE93-EF8A-44DF-B46F-735A7C0BF79E" family="Loricariidae" genus="Otothyris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Otothyris Myers 1927:127" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Otothyris</taxonomicName>
|
||
, all of which belonged to Schaefer’s original concept of Otothyrini, corroborating the previous generic placement of
|
||
<taxonomicName id="0C43981B0C7FFD3EA71D8707C647C01C" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="64" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
made by Britski (1997).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="D6517B4ADDFFA63B50A23D1BD013682D" type="discussion">
|
||
<paragraph id="AD2B2BC01AE870BB07614F0435E654C3" pageNumber="66">
|
||
We confirm in
|
||
<taxonomicName id="1BF2551BBEAC07C13D1D47F2343A061A" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="britskii">C. britskii</taxonomicName>
|
||
all of the characters presented by Schaefer (1998) supporting the Otothyrini, except his character 35 (presence of a rostral plate with posterior notch articulating with mesethmoid -
|
||
<taxonomicName id="E1936330002BF0923D009A6CBE465E91" LSID-ZBK="urn:lsid:zoobank.org:act:96A38C52-FE01-403B-A43D-9D1209562746" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia Britski 1997:233" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="genus">Corumbataia</taxonomicName>
|
||
presents a naked snout tip in which the rostral plate is absent), which are: presence of a deep metapterygoid channel (character 13, state 2), presence of a preopercle with a medially reflected ventral margin(character 18, statel), and presence of a ventrally expanded fourth infraorbital (character 37, statel).
|
||
</paragraph>
|
||
<paragraph id="45A70D58AB02FF13C6E1DDD9E1C87A64" pageNumber="66">
|
||
According to Britski (1997),
|
||
<taxonomicName id="A4519A6A9C0EE9143E0BB524F2911EBD" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
|
||
and
|
||
<taxonomicName id="FA2B4E54BA46797B547EEF87F6DB613B" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
|
||
should be differentiated only by counts of premaxillary and dentary teeth (23-28, 21-26 vs. 27-40, 26-39, respectively). However, Ferreira et al. (2006) also found citogenetic differences between
|
||
<taxonomicName id="7931B25804CA244F5BC6B4810D5F68CC" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
|
||
and
|
||
<taxonomicName id="6FAEA8F08F3CFCB2A448CBE4C62D68F2" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
|
||
. Both species present biarmed chromosomes, but in
|
||
<taxonomicName id="0A327E52855F4DB194185311A74D3872" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
|
||
the chromosomes are more metacentric while in
|
||
<taxonomicName id="B986669B8EF457045E5370525621245A" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
|
||
they are more submetacentric. Furthermore, we observed that the two species can also be differentiated by color pattern, as the unbranched caudal-fin rays of
|
||
<taxonomicName id="45AF1A9E2CE4EEAA83FCD55A1E8BE078" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="britskii">C. britskii</taxonomicName>
|
||
and
|
||
<taxonomicName id="D6E38454E8A2086E875D21E9D0D9B629" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
|
||
lack the striped pattern present in
|
||
<taxonomicName id="7D97ABF46EDC644D7AF077982F715297" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
|
||
(Fig. 5).
|
||
<taxonomicName id="027E56ACEE6AE4C154C5CFBF6546D557" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="tocantinensis">Corumbataia tocantinensis</taxonomicName>
|
||
and
|
||
<taxonomicName id="079C080054844DF22F6FE4883E0E0063" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
|
||
are more similar to each other in the morphology of the pectoral skeleton (Fig. 4). Both species share almost completely enclosed arrector fossae, which is partially opened in
|
||
<taxonomicName id="C34E56CA3F386EC5E17ABE24193BAA87" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="britskii">C. britskii</taxonomicName>
|
||
. The lateral portions of the cleithra are wider in
|
||
<taxonomicName id="DE65C6E2BF28F4DA945B3522D0BCD525" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="britskii">C. britskii</taxonomicName>
|
||
than in the other two species.
|
||
</paragraph>
|
||
<paragraph id="3E399869418D6C5D43EFFAEA0C7E0663" pageNumber="66">
|
||
Britski (1997) mentioned sexually dimorphic features for both
|
||
<taxonomicName id="C3C33DB43B752CCF4F74F95EBBB2C8BF" LSID-ZBK="urn:lsid:zoobank.org:act:FC21A5E8-2896-4BFE-A6EA-A470F67C4310" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia cuestae Britski 1997:234" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="cuestae">C. cuestae</taxonomicName>
|
||
and
|
||
<taxonomicName id="48C468DF6F5333A2850D1AA0ACDA7101" LSID-ZBK="urn:lsid:zoobank.org:act:DA8F26F9-6321-4D32-AFE3-702057E6D690" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Corumbataia tocantinensis Britski 1997:237" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="tocantinensis">C. tocantinensis</taxonomicName>
|
||
. Males differ from females by presenting a developed urogenital papillae posterior to the anus, a skin fold at the dorsal portion of the pelvic-fin spine, and a much longer pelvic-fin spine that extends over the first anal-fin ray. We confirmed all these characters in
|
||
<taxonomicName id="63DFE206E5C72DC650C7C9F67D958B94" family="Loricariidae" genus="Corumbataia" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="66" phylum="Chordata" rank="species" species="britskii">C. britskii</taxonomicName>
|
||
and also observed that males of this species differ from females by having four white blotches on the caudal-fin, two at the dorsal lobe and two at the ventral lobe. Females, on the other hand, present only two white blotches, one on each lobe (Fig. 5A, B).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |