A new species of Copionodon lacking a free orbital rim (Siluriformes: Trichomycteridae)

被引：5

作者：

de Pinna, Mario ^{[1
]}

Burger, Rafael ^{[2
]}

Zanata, Angela Maria ^{[2
]}

机构：

[1] Univ Sao Paulo, Museu Zool, Av Nazare 481, BR-04263000 Sao Paulo, SP, Brazil

[2] Univ Fed Bahia, Inst Biol, Rua Barao Geremoabo S-N, BR-40170115 Salvador, BA, Brazil

来源：

NEOTROPICAL ICHTHYOLOGY | 2018年 / 16卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Chapada Diamantina; Endemicity; New taxon; Rio Paraguacu; Systematics; Taxonomy; PHYLOGENETIC ANALYSIS; CATFISH; SUBFAMILY; TELEOSTEI;

D O I：

10.1590/1982-0224-20170146

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

A new species of the copionodontine genus Copionodon is described from the upper reaches of a tributary to the rio Paraguacu in the Diamantina Plateau, Bahia State, northeastern Brazil. This species represents the northernmost occurrence of the subfamily yet known. The new species can be readily recognized by its large eye without a free orbital rim. Other characters such as the entirely cartilaginous second hypobranchial, and the uniformly broad irregular midlateral dark band further diagnose the new taxon. Its particular combination of characters is superficially intermediate between Copionodon and Glaphyropoma. Detailed analysis, however, indicates that it forms a monophyletic group with species of Copionodon and therefore it should be included in that genus.

引用

页数：9

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