Description of a new species of the genus Chaetostoma from the Orinoco River drainage with comments on Chaetostoma milesi Fowler, 1941 (Siluriformes: Loricariidae)

Autor(es)

Ballen, Gustavo A. ^{[1, 2, 3]} ; Urbano-Bonilla, Alexander ^{[3, 4]} ; Maldonado-Ocampo, Javier A. ^{[3, 5]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Museu Zool, Sao Paulo, SP - Brazil

^[2] Smithsonian Trop Res Inst, Ctr Trop Paleoecol & Archaeol, Ancon - Panama

^[3] Pontificia Univ Javeriana, Fac Ciencias, Dept Biol, Lab Ictiol, Bogota - Colombia

^[4] Inst Invest Recursos Biol Alexander von Humboldt, Bogota - Colombia

^[5] Pontificia Univ Javeriana, Fac Ciencias, Dept Biol, Unidad Ecol & Sistemat UNESIS, Bogota - Colombia

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4105, n. 2, p. 181-197, APR 20 2016.
• Citações Web of Science: 4

Resumo

Chaetostoma joropo n. sp. is described from the piedmont of the Orinoco River drainage in Colombia. The new species has been long confused with Chaetostoma milesi, a species with similar overall morphology and color pattern that is restricted to the Magdalena-Cauca River Basin. We diagnose the new species on the basis of morphology as well as a precise description of the color pattern. Chaetostoma joropo n. sp. is also easily distinguished from C. formosae the most similar species and other species inhabiting the Orinoco River drainage in Colombia. Data on ontogenetic variation and sexual dimorphism are provided, as well as natural history notes and remarks on the usage of the name Chaetostoma milesi for specimens from both the Orinoco and Magdalena-Cauca drainages. A discussion on the usage of the name Chaetostoma platyrhynchus is also provided given its current instability in the literature. (AU)

• Processo FAPESP: 14/11558-5 - Peixes fósseis de água doce e biogeografia do Norte da América do Sul
• Beneficiário: Gustavo Adolfo Ballen Chaparro
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto