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Issue: Vol. 1525 No. 1: 12 Jul. 2007
Type: Articles
Published: 2007-07-12
DOI: 10.11646/zootaxa.1525.1.6
Page range: 61–68
Abstract views: 26
PDF downloaded: 2

On a new species of the genus Moenkhausia Eigenmann  (Ostariophysi: Characidae)

Laboratório de Ictiologia Sistemática, Universidade Federal do Tocantins, Campus de Porto Nacional, Rua 3, Quadra 17, s/n, Jardim dos Ipês, 77.500-000, Porto Nacional, TO, Brazil
Laboratório de Ictiologia, Museu de Ciências e Tecnologia, PUCRS, Av. Ipiranga 6681, 90.619-900, Porto Alegre, RS, Brazil, and Departamento de Zoologia, IB, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, bloco IV, Prédio 43435, 91501-970, Porto Alegre, RS, Brazil
Laboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências,Universidade Estadual Paulista, Campus de Botucatu. Distrito de Rubião Júnior, S/N, 18618-000, Botucatu, SP, Brazil
fish Neotropical tetras Biogeography Systematics

Abstract

A new species of the genus Moenkhausia is described from the middle portions of the Rio Tocantins and tentatively from the Rio Apure in Venezuela, Rio Orinoco drainage. It is diagnosed by the presence of a dark spot in the half proximal length of the upper caudal-fin lobe, and by the presence of a large, irregularly shaped humeral spot located above the sixth to ninth perforated lateral line scale which is more posteriorly positioned along the body side in relation to other members of the genus. The distribution pattern of the new species is discussed.

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