Three new Pimelodus species (Siluriformes: Pimelodidae) from the rio Tocantins drainage, Brazil

被引：9
|
作者：
Ribeiro, Frank R. V. [2 ]
Lucena, Carlos A. S. [3 ]
Lucinda, Paulo H. F. [1 ]
机构：
[1] Univ Fed Tocantins, Lab Ictiol Sistemat, BR-77500000 Porto Nacl, TO, Brazil
[2] Inst Nacl de Pesquisas da Amazonia, Programa Colecoes & Acervos Cient, BR-69011970 Manaus, AM, Brazil
[3] Pontificia Univ Catolica Rio Grande do Sul, Museu Ciencias & Tecnol, Setor Peixes, Porto Alegre, RS, Brazil
来源：
NEOTROPICAL ICHTHYOLOGY | 2008年 / 6卷 / 03期
关键词：
Catfish; Taxonomy; South America; Neotropical Region;
D O I：
10.1590/S1679-62252008000300019
中图分类号：
Q95 [动物学];
学科分类号：
071002 ;
摘要：
Three new species of Siluriformes from the rio Tocantins drainage of Brazil are placed in the genus Pimelodus, P. stewarti, P. joannis, and P. halisodous. Pimelodus halisodous differs from the sympatric P. joannis and P. stewarti by the number of premaxillary tooth rows (13-16 vs. 5-9). Pimelodus joannis differs from P. stewarti by the presence of two dark blotches on the base of the caudal fin. The three new species differ from all other species of Pimelodus by the possession of a uniform gray coloration along flanks; the relatively short distance between the posterior nostril and the anterior orbital border; a short maxillary barbel, that only slightly surpasses the caudal-fin base.
引用
收藏
页码：455 / 464
页数：10
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