A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil

Autor(es)

Marina Barreira Mendonça ^[1] ; Luiz Antônio Wanderley Peixoto ^[2] ; Guilherme Moreira Dutra ; André Luiz Netto-Ferreira ^[4]

Afiliação do(s) autor(es)

^[1] Museu Paraense Emílio Goeldi - Brasil

^[2] Universidade de São Paulo. Museu de Zoologia - Brasil

^[4] Museu Paraense Emílio Goeldi - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 14, n. 1 2016-03-30.

Resumo

Abstract A new species of Xenurobrycon isdescribed from tributaries of the rio Tapajós, Pará, Brazil. It is diagnosed from all congeners by the dark color of the posterior half of both caudal-fin lobes, the presence of infraorbitals one, two, and three, the presence of a set of lamellar processes on eighth principal caudal-fin ray of mature males, the presence of bony hooks similar in size or decreasing posteriorly on last unbranched and first 9-12 branched anal-fin rays of mature males, the presence of only conical teeth on both jaws, the lack of the adipose fin and the presence of 15-18 predorsal scales. The description of the new species increases the number of species in Xenurobrycon to six. An updated key to the species of the genus is provided. (AU)

• Processo FAPESP: 11/50282-7 - Inventário da fauna de Characiformes (Teleostei, Ostariophysi) da América do Sul
• Beneficiário: Naercio Aquino Menezes
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 13/09926-3 - Implicações filogenéticas e taxonômicas na miologia facial comparada de Gymnotiformes e Siluriformes
• Beneficiário: Luiz Antonio Wanderley Peixoto
• Modalidade de apoio: Bolsas no Brasil - Doutorado