|
|
|
|
| |
|
|
Mendonça,Marina Barreira; Peixoto,Luiz Antônio Wanderley; Dutra,Guilherme Moreira; Netto-Ferreira,André Luiz. |
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 |
Palavras-chave: Key to species; Miniaturization; Ostariophysi; Sexual dimorphism; Taxonomy. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100004 |
| |
|
|
|