Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 01 Jun 2003

Apareiodon Eigenmann, 1916 (Teleostei, Characiformes), from the Tocantins-Araguaia Basin, with Description of Three New Species

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Page Range: 337 – 348
DOI: 10.1643/0045-8511(2003)003[0337:AETCFT]2.0.CO;2
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Abstract

Apareiodon species from the Rio Tocantins-Araguaia basin, Brazil, were investigated to determine the recognizable species in that basin. Apareiodon machrisi Travassos, 1957, the only previously described species reported for the Rio Tocantins-Araguaia basin, is recognized as valid, and three new species inhabiting primarily headwater streams are described (Apareiodon argenteus, Apareiodon cavalcante, and Apareiodon tigrinus). The species are diagnosed based on aspects of coloration and morphology. Diagnoses and keys to the species are provided.

Resumen

Espécies de Apareiodon da bacia do rio Tocantins-Araguaia, Brasil, foram investigadas para se determinar as espécies válidas naquela bacia. Apareiodon machrisi Travassos, 1957, a única espécie previamente descrita da bacia do Tocantins-Araguaia é reconhecida como válida e três espécies novas provenientes principalmente de riachos de cabeceiras são descritas como novas (Apareiodon argenteus, Apareiodon cavalcante e Apareiodon tigrinus). As espécies são diagnosticadas com base em aspectos de coloração e morfologia. São fornecidas diagnoses e chaves para as espécies.

Copyright: The American Society of Ichthyologists and Herpetologists
 Fig. 4.
 Fig. 4.

Apareiodon cavalcante, holotype, MNRJ 20093, 56.4 mm SL

 Fig. 2.
 Fig. 2.

Partial map of Brazil and adjoining countries showing geographic distribution (symbols) and type-locality (numbers) of Apareiodon argenteus (dots; 1 = Minaçu); Apareiodon cavalcante (star; 2 = Cavalcante); Apareiodon machrisi (squares; 3 = Amaro Leite); Apareiodon tigrinus (4 = Santa Rita do Araguaia) (some symbols represent more than one lot of specimens)

 Fig. 3.
 Fig. 3.

Apareiodon argenteus, holotype, MZUSP 52900, 76.3 mm SL

 Fig. 5.
 Fig. 5.

Apareiodon tigrinus, holotype, MZUSP 41430, 64.1 mm SL

 Fig. 6.
 Fig. 6.

Apareiodon ibitiensis, MZUSP uncat., Rio Grande basin, State of Minas Gerais, Brazil, 74.4 mm SL

Received: 26 Apr 2002
Accepted: 17 Dec 2002
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