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Issue: Vol. 1635 No. 1: 12 Nov. 2007
Type: Article
Published: 2007-11-12
DOI: 10.11646/zootaxa.1635.1.4
Page range: 55–61
Abstract views: 55
PDF downloaded: 2

A new species of Cynopotamus Valenciennes, 1849 (Characiformes, Characidae) with a key to the species of the genus

Museu de Zoologia, Universidade de São Paulo, Caixa Postal 42494, 04218-970, São Paulo, Brazil
Characiformes Freshwater fish Brazil Taxonomy Systematics

Abstract

Cynopotamus xinguano n. sp. is described from middle-upper tributaries of rio Xingu basin. Among the known species of the genus (Menezes, 1976, 1987) it is more similar to C. essequibensis Eigenmann from which it differs by having more developed gill-rakers on first branchial arch and a different arrangement of muscles around muscular hiatus of pseudotympanum. A new key for species identification is provided.

References

  1. Fink, W.L. & Weitzman, S.H. (1974) The so called cheirodontin fishes of Central America with descriptions of two new species (Pisces: Characidae). Smithsonian Contributions to Zoology, 172, 1–46.

    Menezes, N.A. (1976) On the Cynopotaminae, a new subfamily of the Characidae (Osteichthyes, Ostariophysi, Characoidei). Arquivos de Zoologia, São Paulo, 28, 1–91.

    Menezes, N.A. (1987) Three new species of the characid genus Cynopotamus Valenciennes, 1849, with remarks on the remaining species (pisces, Characiformes). Beaufortia, 37, 1–9.

    Menezes, N.A. (2006) Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotropical Ichthyology, 4, 385–400.