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Data · collection · 2008

Two new species of Hypostomus Lacépède (Teleostei: Loricariidae) from the upper rio Paraná basin, Central Brazil

Listed in GBIF

Description

This dataset contains the digitized treatments in Plazi based on the original journal article Zawadzki, Cláudio H., Weber, Claude, Pavanelli, Carla S. (2008): Two new species of Hypostomus Lacépède (Teleostei: Loricariidae) from the upper rio Paraná basin, Central Brazil. Neotropical Ichthyology 6 (3): 403-412, DOI: 10.1590/S1679-62252008000300013, URL: scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300013&lng=en&tlng=en Two new species of Hypostomus Lacépède (Teleostei: Loricariidae) from the rio Paranaíba and rio Grande basins, both in the upper rio Paraná basin, central Brazil, are described herein.

One of them is distinguished from all congeners, except H. albopunctatus, by having the pectoral-fin spine length equal to or smaller than the pelvic-fin spine. From H. albopunctatus, it is distinguished by having round dark spots (vs. pale) on body and fins. The second species is distinguished from all congeners, except H. multidens and H. ternetzi, by having more than 115 teeth (vs. less than 109) per ramus on dentary and premaxilla.

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It is distinguished most readily from H. ternetzi by having teeth with two symmetrical (vs. asymmetrical) cusps. It is distinguished from H. multidens by having round dark spots (vs. pale) over body and fins. Duas novas espécies de Hypostomus Lacépède (Teleostei: Loricariidae) das bacias dos rios Grande e Paranaíba, ambos da bacia do alto rio Paraná, Brasil Central, são descritas aqui.

Uma delas é diferenciada de todas as congêneres, exceto H. albopunctatus, por possuir o espinho da nadadeira peitoral de comprimento igual ou menor que o espinho da nadadeira pélvica. De H. albopunctatus, é diferenciada por ter por ter pintas arredondadas escuras (vs. claras) sobre o corpo e nadadeiras. A segunda espécie é distinguida de todas as congêneres, exceto H. multidens e H. ternetzi, por ter mais de 115 (vs. menos de 109) dentes em cada hemisérie no dentário e pré-maxilar.

Esta é prontamente distinguida de H. ternetzi por ter dentes com duas cúspides simétricas (vs. cúspides assimétricas). Esta é distinguida de H. multidens por ter pintas escuras arredondadas sobre o corpo e nadadeiras (vs. pintas claras).

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Evolutionary biology 70%
Provenance · 1 source records, 9 field assertions
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