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Issue: Vol. 4107 No. 3: 3 May 2016
Type: Article
Published: 2016-05-03
DOI: 10.11646/zootaxa.4107.3.6
Page range: 381–391
Abstract views: 65
PDF downloaded: 1

Description of a new species of Pareiorhina (Siluriformes: Loricariidae) from the rio São Francisco basin, Brazil

Universidade Estadual Paulista, Departamento de Morfologia, Laboratório de Biologia e Genética de Peixes, municipality of Botucatu, São Paulo State, 18618–970, Brazil.
Universidade Estadual Paulista, Departamento de Morfologia, Laboratório de Biologia e Genética de Peixes, municipality of Botucatu, São Paulo State, 18618–970, Brazil.
Museu de Zoologia da Universidade de São Paulo, Fish Section, municipality of São Paulo, São Paulo State, 04218–970, Brazil.
Cascudinhos Fresh-Water Neoplecostominae Neotropical Fish Taxonomy Pisces

Abstract

In the present paper we describe a new species of Pareiorhina from Minas Gerais State, Brazil. The new species is distinguished from its congeners by a combination of the following characters: the dorsal surface of caudal peduncle strongly concave, 30 vertebrae, bicuspid teeth, a conspicuous cylindrical shaped papilla between the oral valve and premaxilla, smaller odontodes along the snout margin, a small orbital diameter, a higher head width, a shorter interorbital width, a shorter predorsal length, a shorter cleithral width, and a shorter caudal peduncle depth. The new species is known from four small streams of the rio São Francisco basin: one tributary of the rio Maranhão, one tributary of the rio Paraopeba and two tributaries of the Rio das Velhas. This species is found in fast-flowing streams associated with rocks and sand in the bottom of the rivers.

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