Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil
Parancistrus nudiventris, new species, is described and compared with the congener P. aurantiacus. The new species has only been recorded from rio Xingu and can be distinguished from P. aurantiacus by having a naked abdomen (plated in P. aurantiacus), the presence of bluish dots in living specimens...
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Sociedade Brasileira de Ictiologia
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doaj-835dbb1f6c604d0e9a12dfcfb9b0dcec2020-11-25T00:30:35ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02243457157710.1590/S1679-62252005000400014S1679-62252005000400014Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, BrazilLúcia H. Rapp Py-Daniel0Jansen Zuanon1Instituto Nacional de Pesquisas da AmazôniaInstituto Nacional de Pesquisas da AmazôniaParancistrus nudiventris, new species, is described and compared with the congener P. aurantiacus. The new species has only been recorded from rio Xingu and can be distinguished from P. aurantiacus by having a naked abdomen (plated in P. aurantiacus), the presence of bluish dots in living specimens or spotted in preserved specimens (uniformly dark or clear brown or mottled, never spotted in P. aurantiacus), larger interbranchial distance (39-56% in HL vs. 24.9-39.5% in P. aurantiacus), narrower interorbital distance (26.8-38% in HL vs. 38.5-43.1% in P. aurantiacus). Parancistrus nudiventris also has buccal teeth more conspicuous than in P. aurantiacus. Main skeletal differences include the presence of a strong condyle on the lateral ethmoid for articulation with the metapterygoid in P. nudiventris (not seen in P. aurantiacus); anguloarticular processes short in P. nudiventris (long in P. aurantiacus); opercle with odontodes, partly exposed in P. nudiventris (completely embedded in skin in P. aurantiacus).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400014&lng=en&tlng=enParancistrus nudiventrisFreshwater fishesAmazon basinNatural HistoryNeotropical catfishes |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lúcia H. Rapp Py-Daniel Jansen Zuanon |
spellingShingle |
Lúcia H. Rapp Py-Daniel Jansen Zuanon Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil Neotropical Ichthyology Parancistrus nudiventris Freshwater fishes Amazon basin Natural History Neotropical catfishes |
author_facet |
Lúcia H. Rapp Py-Daniel Jansen Zuanon |
author_sort |
Lúcia H. Rapp Py-Daniel |
title |
Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil |
title_short |
Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil |
title_full |
Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil |
title_fullStr |
Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil |
title_full_unstemmed |
Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil |
title_sort |
description of a new species of parancistrus (siluriformes: loricariidae) from the rio xingu, brazil |
publisher |
Sociedade Brasileira de Ictiologia |
series |
Neotropical Ichthyology |
issn |
1982-0224 |
description |
Parancistrus nudiventris, new species, is described and compared with the congener P. aurantiacus. The new species has only been recorded from rio Xingu and can be distinguished from P. aurantiacus by having a naked abdomen (plated in P. aurantiacus), the presence of bluish dots in living specimens or spotted in preserved specimens (uniformly dark or clear brown or mottled, never spotted in P. aurantiacus), larger interbranchial distance (39-56% in HL vs. 24.9-39.5% in P. aurantiacus), narrower interorbital distance (26.8-38% in HL vs. 38.5-43.1% in P. aurantiacus). Parancistrus nudiventris also has buccal teeth more conspicuous than in P. aurantiacus. Main skeletal differences include the presence of a strong condyle on the lateral ethmoid for articulation with the metapterygoid in P. nudiventris (not seen in P. aurantiacus); anguloarticular processes short in P. nudiventris (long in P. aurantiacus); opercle with odontodes, partly exposed in P. nudiventris (completely embedded in skin in P. aurantiacus). |
topic |
Parancistrus nudiventris Freshwater fishes Amazon basin Natural History Neotropical catfishes |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400014&lng=en&tlng=en |
work_keys_str_mv |
AT luciahrapppydaniel descriptionofanewspeciesofparancistrussiluriformesloricariidaefromtherioxingubrazil AT jansenzuanon descriptionofanewspeciesofparancistrussiluriformesloricariidaefromtherioxingubrazil |
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