Data/hora: 08/06/2024 17:56:52

Provedor de dados: | 83
País: | Brazil
Título: | A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil
Autores: | Mendonça,Marina Barreira; Peixoto,Luiz Antônio Wanderley; Dutra,Guilherme Moreira; Netto-Ferreira,André Luiz.
Data: | 2016-01-01
Ano: | 2016
Palavras-chave: | Key to species; Miniaturization; Ostariophysi; Sexual dimorphism; Taxonomy.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100004
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/1982-0224-20150057
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.14 n.1 2016
Fonte: | info:eu-repo/semantics/openAccess