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DOI: http://dx.doi.org/10.11646/zootaxa.4299.4.7

A new species of Heptapterus Bleeker 1858 (Siluriformes, Heptapteridae) from the Uruguay River Basin in Misiones, Northeastern Argentina

GASTÓN AGUILERA, MAURICIO BENITEZ, GUILLERMO ENRIQUE TERÁN, FELIPE ALONSO, JUAN MARCOS MIRANDE

Abstract


In this paper we describe Heptapterus mandimbusu sp. n., a new species of heptapterid catfish from a small tributary of the Uruguay River Basin in Misiones-Argentina. This new species is distinguished from all other congeners by the unique coloration pattern with aggregated melanophores scattered on dorsal and lateral surface of body, forming conspicuous size-variable blotches, and the combination of a long interdorsal distance (13.8–18.9 % SL), 14–18 anal-fin rays, short maxillary barbels (52.2–74.5 % HL), and the adipose fin confluent with caudal fin.

 


Keywords


Pisces, Heptapterus mandimbusu, new heptapterid, Melo Stream, Argentinian ichthyofauna

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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