Two new species of Pseudancistrus (Siluriformes, Loricariidae) from the Amazon basin, northern Brazil

Silva, Gabriel S. C. [UNESP]; Roxo, Fabio F. [UNESP]; Oliveira, Claudio [UNESP]

Two new species of Pseudancistrus (Siluriformes, Loricariidae) from the Amazon basin, northern Brazil

Arquivos

WOS000349370200003.pdf (5.07 MB)

Data

2015-01-01

Autores

Silva, Gabriel S. C.

Roxo, Fabio F.

Oliveira, Claudio

Editor

Pensoft Publ

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

Two new species of Pseudancistrus, a genus diagnosed by non-evertible cheek plates and hypertrophied odontodes along the snout margin, are described from two drainages of the Brazilian Shield: P. kayabi from the rio Teles Pires (rio Tapajos basin) and P. asurini from the rio Xingu. The new species are distinguished from congeners (P. barbatus, P. corantijniensis, P. depressus, P. nigrescens, P. reus, and P. zawadzkii) by the coloration pattern. Pseudancistrus kayabi has dark bars on the dorsal and caudal fins which are similar to that of P. reus from the Caroni River, Venezuela. Pseudancistrus asurini is unique among Pseudancistrus in having whitish tips of the dorsal and caudal fins in juveniles to medium-sized adults.