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Issue: Vol. 4514 No. 1: 6 Nov. 2018
Type: Article
Published: 2018-11-05
DOI: 10.11646/zootaxa.4514.1.7
Page range: 87–96
Abstract views: 91
PDF downloaded: 1

Moenkhausia goya (Characiformes: Characidae): a new species from the upper rio Tocantins basin, Central Brazil

Universidade Estadual de Maringá, Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, av. Colombo, 5790. CEP 87020-900. Maringá, PR, Brazil.
Departamento de Zoologia, IBB-Unesp Campus de Botucatu. CEP 18618-970. Botucatu, SP, Brazil.
Universidade Estadual de Maringá, Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, av. Colombo, 5790. CEP 87020-900. Maringá, PR, Brazil.
Faculdade de Ciências Biológicas e Ambientais, Universidade Federal da Grande Dourados, Caixa Postal 533, 79804-970, Dourados, MS, Brazil.
Museu de Zoologia da Universidade de São Paulo. Avenida Nazaré, 481, Ipiranga, Caixa Postal 42494, 04218-970 São Paulo, SP, Brazil.
Laboratório de Ictiologia, Departamento de Zoologia, IBB-Unesp Campus de Botucatu. CEP 18618-970. Botucatu, SP, Brazil.
Pisces Cerrado Moenkhausia xinguensis State of Goiás Taxonomy

Abstract

A new species of Moenkhausia is described from the upper rio Tocantins basin, States of Goiás and Tocantins, Brazil. Moenkhausia goya, new species, can be distinguished from its congeners by the shape of the humeral blotch in combination with a uniform dark pigmentation covering the interradial membranes of the dorsal and anal fins. Among congeners, the new species is most similar to M. britskii Azevedo-Santos & Benine, M. grandisquamis (Müller & Troschel) and M. xinguensis Steindachner by presenting a deep body, a large, round humeral blotch and fins without discrete patches of dark pigmentation (i.e., without well-defined blotches or stripes). With the description of M. goya, the number of species endemic to the upper rio Tocantins basin (considered upstream from the mouth of the rio Paranã) is raised to 51. Of these, some are widespread in the upper rio Tocantins basin, while others seem to be restricted to one of its sub-basins.

 

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