Estación Biológica Cocha Cashu

Revision of Prodontocharax and revalidation of Amblystilbe (Teleostei: Characidae: Cheirodontinae), with description of a new species

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Revista Científica:

Neotropical Ichthyology

Año:

2023

Volumen:

21

Número:

3

Páginas:

e230031

DOI:

https://doi.org/10.1590/1982-0224-2023-0031

ISSN:

1679-6225 (impreso), 1982-0224 (electrónico)

Keywords (Autor):

Amazon basin, Characiformes, Cheirodontini, Neotropical, Taxonomy.

Resumen

Prodontocharax species are revised and the genus Amblystilbe is revalidated based on analysis of type-material and additional specimens. Both genera are diagnosed based on unique synapomorphies among members of the Cheirodontinae related to shape, size, number and arrangement of teeth in the jaw bones. Prodontocharax melanotus, from the upper rio Madeira basin, Brazil and Bolivia, is redescribed, and a new species is described from the rio Huallaga basin, Peru. The genus Amblystilbe and its type-species, A. howesi, are redescribed from the Amazonas River basin, Bolivia, Brazil, and Peru, and Prodontocharax alleni is considered a junior synonym of A. howesi. The two species of Prodontocharax are distinguished by the color pattern, number of lamellae of the olfactory rosette in male and female and number of gill rakers, and differ from A. howesi by the number and shape of teeth, color pattern and number of branched anal-fin rays. According to recent studies, the species of Prodontocharax and A. howesi cluster into two distinct clades among the cheirodontines.

Copyright:

© 2023 Vinicius A. Bertaco, Junior Chuctaya, Fernando C. Jerep, Luiz R. Malabarba​

Autor (es ):

Bertaco, Vinicius A.; Chuctaya, Junior; Jerep, Fernando C.; Malabarba, Luiz R.

Editorial:

Sociedade Brasileira de Ictiologia

Ciudad:

São Paulo, Brasil

Idioma:

Inglés

Tipo de Referencia:

Articulo de revista academica

Investigadores: