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1 May 2005 Bryconamericus turiuba, a New Species from the Upper Rio Paraná System (Ostariophysi: Characiformes)
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Abstract

Bryconamericus turiuba, new species, is described from the upper Rio Paraná system in Brazil. It differs from all congeners in the following combination of characters: 15– 20 branched anal-fin rays; four or five scales in a transverse series from the dorsal-fin origin to the lateral line; shallow body (depth 23.6–30.6% of SL); 37–43 perforated lateral line scales; first, third, and fifth or, more rarely, first and fourth outer premaxillary tricuspid teeth projecting anteriorly; two to five tricuspid to pentacuspid maxillary teeth; dentary with three or four tricuspid or pentacuspid large teeth, followed by five to seven smaller conical to tricuspid teeth; a conspicuous dark, vertically elongate humeral spot, extending to below the lateral line; a dark dorsal stripe extending from the supraoccipital spine to the caudal peduncle with a gap at the adipose-fin base; caudal-fin lobes without conspicuous markings, uniformly pigmented along rays; mature males lacking hooks on the pelvic- and anal-fin rays. The new species is compared with the Bryconamericus species described from the basins of the Rio Paraná, Rio Paraguay, Rio São Francisco, and coastal Brazilian rivers.

The American Society of Ichthyologists and Herpetologists
Francisco Langeani, Zilda Margarete S. de Lucena, Juliane Lima Pedrini, and Fabrício José Tarelho-Pereira "Bryconamericus turiuba, a New Species from the Upper Rio Paraná System (Ostariophysi: Characiformes)," Copeia 2005(2), 386-392, (1 May 2005). https://doi.org/10.1643/CI-04-067R1
Accepted: 8 January 2005; Published: 1 May 2005
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