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Authors

  • Carlos Alberto Santos de Lucena Laboratório de Ictiologia. Museu de Ciências e Tecnologia - PUCRS

Abstract

Roeboides dispar, a new species, is described from the ipper Madeira, Juruá and Ucayali rivers of the upper portion of the Amazon River drainage. The new species is distinguished from all other species of the genus by the presence of four teeth forming a regular external row in the premaxilla (three, rarely four teeth not arranged in a regular external row in other species), and 31 to 48 maxillary conical teeth (19 or frwer in other species). The peculiar distribution of R. dispar and its basal position in the phylogeny of the genus suggest an initial vicariant event separating the upper portion of Madeira, Juruá and Ucayali rivers from the rest of the Amazon drainage.

Author Biography

Carlos Alberto Santos de Lucena, Laboratório de Ictiologia. Museu de Ciências e Tecnologia - PUCRS

Possui Graduação em Licenciatura Plena em Ciências Biológicas pela Pontifícia Universidade Católica do Rio Grande do Sul, Mestrado em Biociências (Zoologia) pela Pontifícia Universidade Católica do Rio Grande do Sul e Doutorado em Ciências pela Universidade de São Paulo. Atualmente é Curador II do Museu de Ciências e Tecnologia da Pontifícia Universidade Católica do Rio Grande do Sul.

Mais informações no Currículo Lattes.

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Published

2001-01-01

Issue

Vol. 14 No. 2 (2001)

Section

Artigos

License

Copyright (c) 2001 Carlos Alberto Santos de Lucena

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