Pareiorhina hyptiorhachis, a new catfish species from Rio Paraiba do Sul basin, southeastern Brazil (Siluriformes, Loricariidae)

被引:7
作者
da Costa e Silva, Gabriel de Souza [1 ]
Roxo, Fabio Fernandes [1 ]
Oliveira, Claudio [1 ]
机构
[1] IB UNESP, Dept Morfol, Lab Biol & Genet Peixes, Campus Botucatu, BR-18618000 Botucatu, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
Cascudinhos; Taxonomy; Freshwater; Neoplecostominae; Neotropical Region; BIOGEOGRAPHY;
D O I
10.3897/zookeys.315.5307
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Pareiorhina hyptiorhachis is described from Ribeirao Fernandes and Rio Pomba, Rio Paraiba do Sul basin, Brazil. The new species is distinguished from its congeners (P. brachyrhyncha, P. carrancas, P. cepta, and P. rudolphi) by the presence of a conspicuous ridge on the trunk posterior to the dorsal fin (postdorsal ridge), simple teeth, a completely naked abdomen, a round dorsal profile of the head, greater suborbital depth and greater head width. We discuss the distributional pattern of the new species and its congeners and hypothesize that headwater capture is responsible for the distribution of Pareiorhina species across different watersheds in southeastern of Brazil.
引用
收藏
页码:65 / 76
页数:12
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