Friday, July 1, 2016

[Ichthyology • 2011] Stenolicmus ix • A New Species of Sand-dwelling Catfish of the genus Stenolicmus (Siluriformes; Trichomycteridae) from Igarapé Curuá, left tributary of the Rio Amazonas, Pará, Brazil


Stenolicmus ix 
Wosiacki, Coutinho & de Assis Montag, 2011 

Abstract

Stenolicmus ix, new species, is described from Igarapé Curuá, left tributary of the Rio Amazonas, Pará, Brazil. It can be distinguished from S. sarmientoi by the length of the nasal barbels that reach the base of the first opercular odontodes; length of the maxillary barbels that reach the posterior margin of the opercular odontode plate; seven well-developed opercular odontodes; seven well-developed interopercular odontodes; color pattern of the dorsal region of trunk composed of agglomerated chromatophores forming circular patches twice the diameter of the eye; proportionally large eyes, 11.8% HL; caudal peduncle tall, 11.6% SL, without dark bar at base of the caudal fin; length of the head proportionately larger, 17.9% SL; unbranched rays of caudal fin reaching distal margin of fin. Comparisons with other Sarcoglanidinae and Trichomycteridae are presented. Some comments on the systematics and phylogenetic relationships of the group are made.

Keywords: New catfish; Sarcoglanidinae; lower Amazon basin




Wolmar Benjamin Wosiacki, Daniel Pires Coutinho and Luciano Fogaça de Assis Montag. 2011. Description of A New Species of Sand-dwelling Catfish of the genus Stenolicmus (Siluriformes; Trichomycteridae). Zootaxa.

Jaguar-like species of catfish discovered in the Amazon

No comments:

Post a Comment