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Revisão taxonômica e relações filogenéticas das espécies de Roeboides grupo-microlepis (Ostariophysi, Characiformes, Characidae)

2003; Fundación Zoobotánica de Rio Grande do Sul; Volume: 93; Issue: 3 Linguagem: Inglês

10.1590/s0073-47212003000300008

ISSN

1678-4766

Autores

Carlos Alberto Santos de Lucena,

Tópico(s)

Ichthyology and Marine Biology

Resumo

ROEBOIDES MICROLEPIS SPECIES-GROUP (OSTARIOPHYSI, CHARACIFORMES, CHARACIDAE). TheRoeboides microlepis species-group is revised.Four species are recognized: R. myersii Gill, 1870 from the Amazon basin, R. microlepis (Reinhardt, 1851) from river Paraguay, middle and lower river Paraná, R. araguaito sp.nov.from the river Orinoco basin, and R. margareteae sp.nov.known only from Rio Parnaíba and Pindaré-Mearim, northeastern Brazil.The type-locality of R. microlepis is restricted to river Paraguay; R. bonariensis (Steindachner, 1879) is considered a synonym of R. microlepis.The phylogenetic analysis indicates that R. myersii and R. araguaito are most parsimoniously related and may be a sister group.These two species are here considered as sister group of the monophyletic lineage which includes R. microlepis and R.

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