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DOI: http://dx.doi.org/10.11646/zootaxa.4107.3.6

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

GABRIEL S. C. SILVA, FÁBIO F. ROXO, OSVALDO T. OYAKAWA

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.


Keywords


Cascudinhos, Fresh-Water, Neoplecostominae, Neotropical Fish, Taxonomy, Pisces

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ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa