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Type: Article
Published: 2016-09-29
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A new species of Ituglanis (Siluriformes: Trichomycteridae) from the Tocantins and Paranaíba river basins, central Brazil, with remarks on the systematics of the genus

Museu de Zoologia da Universidade de São Paulo, Laboratório de Ictiologia; Av. Nazaré, 481, 04263-000, São Paulo, SP, Brazil.
Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Zoologia; Campus Universitário Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
UNESP, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Instituto de Biociências, Letras e Ciências Exatas, Departamento de Zoologia e Botânica, Laboratório de Ictiologia; Rua Cristóvão Colombo, 2265, Jardim Nazareth, 15054-000, São José do Rio Preto, SP, Brazil
Pisces Loricarioidea Trichomycterinae catfish taxonomy systematics

Abstract

Ituglanis goya, new species, is described from the Paranaíba and Tocantins river drainages, central Brazil. This is the first species of the genus described for the Upper Paraná system and the second epigean Ituglanis for the Tocantins basin. The new species is distinguished from its congeners by the combination of a color pattern formed by longitudinal stripes and spots, absence of the anterior cranial fontanel, pattern of the cephalic laterosensory system and several fin-ray counts. Ituglanis goya exhibits morphological features that oppose the traditional hypotheses of alignment of the genus with the TSVSG clade of Trichomycteridae. These and other issues concerning the systematics of Ituglanis and the Trichomycterinae are critically discussed.

 

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