A new species of electric knifefish from the rio Negro, Amazon basin (Gymnotiformes: Hypopomidae, Microsternarchini)

Cristina Cox Fernandes; Adília Nogueira; Andrew Williston; José Antônio Alves-Gomes

doi:10.1635/053.164.0113

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Cristina Cox Fernandes,¹ Adília Nogueira,² Andrew Williston,³ José Antônio Alves-Gomes⁴

¹Biology Department, Morrill Science Center, University of Massachusetts, 611 North Pleasant St., Amherst MA 01003; and Instituto Nacional de Pesquisas da Amazônia, C. P. 478, Manaus, Brazil. E-mail: . Send reprint requests to this address. cristina@b
²Laboratório de Fisiologia Comportamental e Evolução, Instituto Nacional de Pesquisas da Amazônia, C. P. 478, Manaus, Brazil. E-mail: adilianogueira@yahoo.com.br
³Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA. E-mail: andrew.williston@gmail.com
⁴Laboratório de Fisiologia Comportamental e Evolução, Instituto Nacional de Pesquisas da Amazônia, C. P. 478, Manaus, Brazil. E-mail: puraque@inpa.gov.br

Abstract

A new species of electric knifefish of the genus Microsternarchus is described from the central basin of the rio Negro, Brazil. The new species is distinguished in external features from its single congener, Microsternarchus bilineatus, by the presence of a short caudal filament, a lower number of anal-fin rays, and uniform body pigmentation. Internally, features of the skeleton also distinguish the two species, in particular in the shape of the maxilla and antorbital.

Citation Download Citation

Cristina Cox Fernandes, Adília Nogueira, Andrew Williston, and José Antônio Alves-Gomes "A new species of electric knifefish from the rio Negro, Amazon basin (Gymnotiformes: Hypopomidae, Microsternarchini)," Proceedings of the Academy of Natural Sciences of Philadelphia 164(1), 213-227, (11 August 2015). https://doi.org/10.1635/053.164.0113

Published: 11 August 2015

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