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28 February 2007 New Species of Astyanax (Ostariophysi: Characiformes: Characidae) from the Upper Rio Paraná System, Brazil
Richard P. Vari, Ricardo M. C. Castro
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Abstract

Astyanax bockmanni, a new species of characid, is widespread in streams in the upper Rio Paraná system of central, southeastern, and southern Brazil. Samples of the species were identified by previous authors as A. eigenmanniorum, a species originally described from far southern Brazil. Astyanax bockmanni differs from A. eigenmanniorum and all congeners in the combination of morphometric, meristic, and pigmentary features and details of oral dentition. Uncertainties concerning the generic placement of Astyanax paranahybae are discussed, and it is proposed that the species is a member of a clade within the Characidae that does not include Astyanax.

Astyanax bockmanni, uma nova espécie de caracídeo, é amplamente distribuída em riachos do Alto Rio Paraná, nas regiões centro-oeste, sudeste e sul do Brasil. Amostras dessa espécie foram previamente identificadas por diversos autores como A. eigenmanniorum, uma espécie originalmente descrita do extremo sul do Brasil. Astyanax bockmanni difere de A. eigenmanniorum e demais congêneres por uma combinação de caracteres morfométricos e de pigmentação, além de detalhes da dentição oral. Incertezas quanto ao posicionamento genérico de Astyanax paranahybae são discutidas e propõe-se que a espécie seja membro de um clado de Characidae que não inclui Astyanax.

2007 by the American Society of Ichthyologists and Herpetologists
Richard P. Vari and Ricardo M. C. Castro "New Species of Astyanax (Ostariophysi: Characiformes: Characidae) from the Upper Rio Paraná System, Brazil," Copeia 2007(1), 150-162, (28 February 2007). https://doi.org/10.1643/0045-8511(2007)7[150:NSOAOC]2.0.CO;2
Received: 17 November 2005; Accepted: 11 October 2006; Published: 28 February 2007
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