157 lines
22 KiB
XML
157 lines
22 KiB
XML
<document id="9C0DF1D442325F1595EAAA88A99FBBC3" ENCODING="UTF-8" ID-GBIF-Dataset="be1b3001-c73a-4af6-8592-b65dc3a3e182" ModsDocID="z00628p001" checkinTime="1246975180213" checkinUser="thomas" docAuthor="Jonathan W. Armbruster" docDate="2004" docId="77E5CD70053470ECFD142216090A9F58" docLanguage="en" docName="2004_Armbruster_gg1.xml" docOrigin="Zootaxa 628" docSource="http://www.zoobank.org/urn:lsid:zoobank.org:pub:C8D199F9-0677-41B1-ACD1-8A685EE26AE2" docTitle="Pseudancistrus Bleeker" docType="treatment" docVersion="12" lastPageNumber="3" masterDocId="7940ABBD303BB4E7BC397858A459F170" masterDocTitle="Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus." masterLastPageNumber="15" masterPageNumber="1" pageNumber="2" updateTime="1701314023235" updateUser="plazi">
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<mods:titleInfo id="6B70DD4A99FBDDBEDB0F5FF010481556">
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<mods:title id="CAA7684675C3DB37339402D15757A6FB">Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus.</mods:title>
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<mods:name id="B4E493FE32BDDEB9FDEAE4A337294995" type="personal">
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<mods:namePart id="C4AF4BE8E549C7E00C6E943265B2A256">Jonathan W. Armbruster</mods:namePart>
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<mods:typeOfResource id="C6141CEB0001031923A072130E40832D">text</mods:typeOfResource>
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<mods:title id="FAE19FB93329E8EA6D56AEF47A26DF74">Zootaxa</mods:title>
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<mods:part id="07B8E12E09725411CB1478F6DF2F4AF2">
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<mods:date id="4964157C7452C8F752035BAAB5D6DD95">2004</mods:date>
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<mods:detail id="B01469465B5EA1A53F90D7EB46BAF4AA" type="volume">
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<mods:number id="074ED58BAA28DA05F6AA761B193C9A99">628</mods:number>
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<mods:start id="D16EC9D70F92AB6517E66C0CFA804D87">1</mods:start>
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<mods:classification id="0070B405311AB4E123454BD7B061D7EF">journal article</mods:classification>
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<mods:identifier id="2DA8D7AA09607B6F1521B09E14C0A317" type="Plazi-Custom">z00628p001</mods:identifier>
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<treatment id="77E5CD70053470ECFD142216090A9F58" ID-DOI="http://doi.org/10.5281/zenodo.6270341" ID-GBIF-Taxon="100124567" ID-Zenodo-Dep="6270341" LSID="urn:lsid:plazi:treatment:77E5CD70053470ECFD142216090A9F58" httpUri="http://treatment.plazi.org/id/77E5CD70053470ECFD142216090A9F58" lastPageNumber="3" pageNumber="2">
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<subSubSection id="A180A29778C6396CD50473E6AD357885" type="nomenclature">
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<paragraph id="33E228836DBF03DFDDE8D65304BF66C3">
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[[
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<taxonomicName id="EC1E3ECCBB68114CFAF60A62E7DBBA66" ID-CoL="6YQK" ID-ENA="471096" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus Bleeker</taxonomicName>
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]]
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</paragraph>
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</subSubSection>
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<subSubSection id="D20F7D6EBF2672E36E16DA17CC3C1ABE" type="discussion">
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<subSection id="144BD7E3443232E1A2B036FB6F45370F" type="multiple">
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<paragraph id="03047A51057FC4CA81E8412EACEFD550" pageNumber="2">Introduction</paragraph>
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</subSection>
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<paragraph id="CEE88DCDBEDC39FE95508419185F5BC9" pageNumber="2">
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<taxonomicName id="F0E9D0AE0245F7927D17F5A92B35327B" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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is a medium-sized genus (14 species) of the Loricariidae and is a member of the tribe Ancistrini of the Hypostominae (Armbruster 2004). Bleeker (1862) described
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<taxonomicName id="60002FF9466AEA8F7E9B8528208B9964" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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and separated it from all other members of his Plecostomiformes (=Hypostominae) except
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<taxonomicName id="F9E2CEE0E368777B307E469FD0AAD093" family="Loricariidae" genus="Plecostomus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Plecostomus</taxonomicName>
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(=
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<taxonomicName id="C3AA2951F2B9A234892887D52270AF11" LSID-ZBK="urn:lsid:zoobank.org:act:E0BC8DAD-9CD9-4E32-920A-063D33AD0E80" family="Loricariidae" genus="Hypostomus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Hypostomus Lacépède 1803:144" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Hypostomus</taxonomicName>
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) based on the inability to evert the cheek plates but with the presence of hypertrophied cheek odontodes.
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<normalizedToken id="E7773E9C47542B27D4BC5BE0E76F059D" originalValue="Isbrücker">Isbruecker</normalizedToken>
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(1980) retained
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<taxonomicName id="93FAF130F3069ED557896A4537BD6A3C" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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as close to
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<taxonomicName id="22FF08640DF994B0A1E20EB4A27749A1" LSID-ZBK="urn:lsid:zoobank.org:act:E0BC8DAD-9CD9-4E32-920A-063D33AD0E80" family="Loricariidae" genus="Hypostomus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Hypostomus Lacépède 1803:144" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Hypostomus</taxonomicName>
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and placed the two genera in a more restrictive Hypostominae, but Schaefer (1986; 1987) found that
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<taxonomicName id="2BE4815DB5779A44DA791651C7F95B64" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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shared a modified bar- or sickle-shaped opercle with the Ancistrinae (now Ancistrini).
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</paragraph>
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<paragraph id="67091C0476D887C2841DA79432CDD60D" pageNumber="2">
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<taxonomicName id="872D510A9BA93AD1840021BE8449FFF8" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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is also known for the presence of sometimes extremely hypertrophied odontodes along the snout (Burgess 1989). Male and female
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<taxonomicName id="6DC81E0D0C0BF4B96D5E00E149E3FA08" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="barbatus">Pseudancistrus barbatus</taxonomicName>
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were pictured in Darwin (1882), and Darwin stated that the male had very hypertrophied odontodes on the snout and they were barely present in females; however, females do develop hypertrophied odontodes in
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<taxonomicName id="5F5054C5BC39D8E657A4137A103BE12F" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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species with hypertrophied snout odontodes (Armbruster and Provenzano 2000), although they may not be as long as in males (pers. obs.). Several species appear to lack hypertrophied snout odontodes (
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<taxonomicName id="1C7B5A4DDA5248B5C4068EA288D7A3CE" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="brevispinis">P. brevispinis</taxonomicName>
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,
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<taxonomicName id="056B8379314B19A1578BCDD3D79327E2" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="megacephalus">P. megacephalus</taxonomicName>
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, and the species described herein as
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<taxonomicName id="ABD77B4A7619E2B96E8ECB3E5CC39F0C" LSID-ZBK="urn:lsid:zoobank.org:act:CB650BA4-2944-44D4-8690-7FCEBD43DE58" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus sidereus Armbruster 2004:8" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="sidereus">P. sidereus</taxonomicName>
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; pers. obs.), and hypertrophied snout odontodes are also found in numerous members of the Ancistrini (
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<taxonomicName id="792560677415DE71CEAD9DB591102568" LSID-ZBK="urn:lsid:zoobank.org:act:30DD89E4-1A65-4C81-859A-F9F210DB8205" family="Loricariidae" genus="Dolichancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Dolichancistrus Isbrücker 1980:47" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Dolichancistrus</taxonomicName>
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and
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<taxonomicName id="4D7386BC4D861DC3FC358930C7FF083A" family="Loricariidae" genus="Lasiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lasiancistrus</taxonomicName>
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for example) as well as many other members of the Loricariidae. However, the presence of hypertrophied snout odontodes is useful in identifying many
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<taxonomicName id="3C9E0A1C456D09A8F7F86EDCEE38516E" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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because they are present in the species that have them regardless of season or sex, and they develop fairly early in ontogeny (pers. obs.).
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</paragraph>
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<paragraph id="CE319F06C77E6FE46AA3A9C8987374F0" lastPageNumber="3" pageNumber="2">
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<normalizedToken id="65534E71A34D981F827CA51AF8263CD1" originalValue="Isbrücker">Isbruecker</normalizedToken>
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et al. (1988) described
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<taxonomicName id="B5A509B3AFB41E5E089BB8E38ADC5146" LSID-ZBK="urn:lsid:zoobank.org:act:41A9FC79-E8EA-4D64-AF08-CA553689AD07" family="Loricariidae" genus="Lithoxancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Lithoxancistrus orinoco Isbrücker, Nijssen & Cala 1988:14" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="orinoco">Lithoxancistrus orinoco</taxonomicName>
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as a
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<taxonomicNameLabel id="6A0D437E4B638FC772971A85994CF978" rank="genus">new genus and species</taxonomicNameLabel>
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based on the derived presence of large papillae located behind each dentary.
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<normalizedToken id="6284FAEB6FB106BCF5A0EDA4DB18F22B" originalValue="Isbrücker">Isbruecker</normalizedToken>
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et al. (2001) described
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<taxonomicName id="2DC7E59C4A96434AE01BC2B8D4457731" LSID-ZBK="urn:lsid:zoobank.org:act:9D74B17A-8881-4E4E-A6DE-D0C62E4DEE65" family="Loricariidae" genus="Guyanancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Guyanancistrus Isbrücker 2001:19" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Guyanancistrus</taxonomicName>
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for several species that were formerly placed in
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<taxonomicName id="A40CA5F294DDFCECBEA0102CC16EDCBF" family="Loricariidae" genus="Lasiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lasiancistrus</taxonomicName>
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(
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<normalizedToken id="C79B3A5819916AA1117B730D279A5587" originalValue="Isbrücker">Isbruecker</normalizedToken>
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1980; Heitmans et al. 1983). The diagnosis of
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<taxonomicName id="506C129F238C3E58979DC4585CDAC2AF" LSID-ZBK="urn:lsid:zoobank.org:act:9D74B17A-8881-4E4E-A6DE-D0C62E4DEE65" family="Loricariidae" genus="Guyanancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Guyanancistrus Isbrücker 2001:19" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Guyanancistrus</taxonomicName>
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in
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<normalizedToken id="87A97871C64F90AF73F74FD39E8DAA9C" originalValue="Isbrücker">Isbruecker</normalizedToken>
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et al. (2001) was brief, and only stated that the species lack the characteristic odontodes of
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<taxonomicName id="583137D737027A03B25AB97B8A59B38C" family="Loricariidae" genus="Lasiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lasiancistrus</taxonomicName>
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(apparently referring to the whiskerlike odontodes of Armbruster 2004); and no characteristics were given to unite the species of
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<taxonomicName id="B905B4D0AAA655DBF0BE5E8C0EE33F08" LSID-ZBK="urn:lsid:zoobank.org:act:9D74B17A-8881-4E4E-A6DE-D0C62E4DEE65" family="Loricariidae" genus="Guyanancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Guyanancistrus Isbrücker 2001:19" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Guyanancistrus</taxonomicName>
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. The species of
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<taxonomicName id="D6AFDB056E85ED9F32023F14292D0329" LSID-ZBK="urn:lsid:zoobank.org:act:9D74B17A-8881-4E4E-A6DE-D0C62E4DEE65" family="Loricariidae" genus="Guyanancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Guyanancistrus Isbrücker 2001:19" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Guyanancistrus</taxonomicName>
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further lack other synapomorphies for
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<taxonomicName id="A09C94842FCC07AA1F21BD2403B1BEAE" family="Loricariidae" genus="Lasiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lasiancistrus</taxonomicName>
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, and are not closely related to
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<taxonomicName id="9F69B49AA76117AB3BD5BE8A4C2D64EF" family="Loricariidae" genus="Lasiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lasiancistrus</taxonomicName>
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(Armbruster 2004). Armbruster (2004) found that the species of
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<taxonomicName id="392383BA1EE50D5BD3B8FE2CD5215E96" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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,
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<taxonomicName id="C87E597E83F37E89A4CE99E9D80ABC3C" LSID-ZBK="urn:lsid:zoobank.org:act:377A602F-7922-4A09-B062-4D9BBD4C45FA" family="Loricariidae" genus="Lithoxancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Lithoxancistrus Isbrücker, Nijssen & Cala 1988:14" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lithoxancistrus</taxonomicName>
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,
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<taxonomicName id="2BFEF1B7FE8CA97B8C8D2A186D4077CB" LSID-ZBK="urn:lsid:zoobank.org:act:9D74B17A-8881-4E4E-A6DE-D0C62E4DEE65" family="Loricariidae" genus="Guyanancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Guyanancistrus Isbrücker 2001:19" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Guyanancistrus</taxonomicName>
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,
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<taxonomicName id="B21269933FB80C9CBC51EF970E9D21BE" family="Loricariidae" genus="Hemiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="megacephalus">Hemiancistrus megacephalus</taxonomicName>
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, and the species described herein as
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<taxonomicName id="872A11D5FD5D90873A48E57039C59732" LSID-ZBK="urn:lsid:zoobank.org:act:CB650BA4-2944-44D4-8690-7FCEBD43DE58" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus sidereus Armbruster 2004:8" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="sidereus">P. sidereus</taxonomicName>
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form a well-diagnosed (decay index = 5), monophyletic clade. Armbruster (2004) placed
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<taxonomicName id="0AB78328504E815FB3D1C31087309DC8" LSID-ZBK="urn:lsid:zoobank.org:act:377A602F-7922-4A09-B062-4D9BBD4C45FA" family="Loricariidae" genus="Lithoxancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Lithoxancistrus Isbrücker, Nijssen & Cala 1988:14" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Lithoxancistrus</taxonomicName>
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and
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<taxonomicName id="B028A17AE980D480E6543C13CADE8263" LSID-ZBK="urn:lsid:zoobank.org:act:9D74B17A-8881-4E4E-A6DE-D0C62E4DEE65" family="Loricariidae" genus="Guyanancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Guyanancistrus Isbrücker 2001:19" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Guyanancistrus</taxonomicName>
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into the synonymy of
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<taxonomicName id="50D77B7753857781237F0AA313C617AF" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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and transfered
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<taxonomicName id="13E83311B52FA589B60E916C9EF6B186" family="Loricariidae" genus="Hemiancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="species" species="megacephalus">Hemiancistrus megacephalus</taxonomicName>
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to
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<taxonomicName id="51205C1DCA687FFC2BF022261367FA23" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="2" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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.
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</paragraph>
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<paragraph id="13B07E080845677CCAEE35AE9B85BE2C" pageNumber="3">
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<taxonomicName id="21EDA5972145D234B4C622B6B16B0C8C" LSID-ZBK="urn:lsid:zoobank.org:act:CB650BA4-2944-44D4-8690-7FCEBD43DE58" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus sidereus Armbruster 2004:8" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="species" species="sidereus">Pseudancistrus sidereus</taxonomicName>
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,
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<taxonomicNameLabel id="AF0833C75EC89C897FAF200CB2D44727" rank="species">new species</taxonomicNameLabel>
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, can be considered a basal member of
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<taxonomicName id="1BAE56B784B8110C48609F6E91BF015E" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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based on its lack of the features of more derived members of the genus such as hypertrophied odontodes along the snout (Fig. 1) and loss of the evertible cheek plates, and its placement was in a basal polytomy with
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<taxonomicName id="6AA4D9AB346C24CF827B4DF636C9C967" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="species" species="brevispinis">P. brevispinis</taxonomicName>
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,
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<taxonomicName id="4E55392303B5A5030C7D471F6A36397A" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="species" species="megacephalus">P. megacephalus</taxonomicName>
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, and the remainder of
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<taxonomicName id="F44F2801BD2652F34C13475158B4EDD3" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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in Armbruster (2004).
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<taxonomicName id="F3BEF2CB7E912B4C57ECEB0F08CD3C83" LSID-ZBK="urn:lsid:zoobank.org:act:CB650BA4-2944-44D4-8690-7FCEBD43DE58" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus sidereus Armbruster 2004:8" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="species" species="sidereus">Pseudancistrus sidereus</taxonomicName>
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has a unique ridge on the caudal peduncle formed from the concave dorsal sections of the ventral row plates and a fairly uncommon color pattern of white to gold spots.
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<taxonomicName id="03D16DFCAAB155BD73FB47B05614CC1F" LSID-ZBK="urn:lsid:zoobank.org:act:CB650BA4-2944-44D4-8690-7FCEBD43DE58" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus sidereus Armbruster 2004:8" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="species" species="sidereus">Pseudancistrus sidereus</taxonomicName>
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is found only in the southern Venezuelan state of Amazonas, and is described herein.
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<taxonomicName id="5F1A5C66E30E79EA65316AAF46FA6639" LSID-ZBK="urn:lsid:zoobank.org:act:65E9F392-A294-426E-9C9E-1695549A3390" family="Loricariidae" genus="Pseudancistrus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName-ZBK="Pseudancistrus Bleeker 1862:2" order="Siluriformes" pageNumber="3" phylum="Chordata" rank="genus">Pseudancistrus</taxonomicName>
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is also diagnosed and redescribed.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |