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Issue: Vol. 4329 No. 3: 5 Oct. 2017
Type: Article
Published: 2017-10-04
DOI: 10.11646/zootaxa.4329.3.4
Page range: 256–266
Abstract views: 72
PDF downloaded: 1

A new species of the catfish genus Cordylancistrus (Siluriformes, Loricariidae) from the Sierra Nevada de Santa Marta, Colombia

Centro Museo de Biología, Instituto de Zoología y Ecología Tropical, Facultad de Ciencias, Universidad Central de Venezuela, Apartado 47058, Caracas 1041-A, Venezuela. Instituto de Ciencias Biológicas, Escuela Politécnica Nacional, Quito, Ecuador.
Centro Museo de Biología, Instituto de Zoología y Ecología Tropical, Facultad de Ciencias, Universidad Central de Venezuela, Apartado 47058, Caracas 1041-A, Venezuela.
Universidad Metropolitana, Facultad de Medicina, Barranquilla, Departamento del Atlántico, Colombia.
Pisces Freshwaters fishes taxonomy diversity Magdalena River Basin Caribbean Sea Basin

Abstract

As a part of an assessment of loricariid catfishes inhabiting the Andes of Colombia, specimens belonging to an interesting new species were identified. The new species is described herein, and it is tentatively included in the genus Cordylancistrus. The new species can be easily distinguished among its congeners by the presence of a unique diagnostic character: a fleshy keel or excrescence, black or dark brown, over the posterior tip of supraoccipital. Specimens of the new species were captured in rivers of the Sierra Nevada de Santa Marta and the Sierra de Perijá that drain to the Magdalena River Basin and Caribbean Sea. The occurrence of one species of Cordylancistrus in the Sierra Nevada de Santa Marta could have interesting biogeographic implications for hypotheses related to the geological history of northwestern corner of South America or to the dispersal or vicariance models used to explain biogeographical patterns of related species in Colombia.

 

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