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Issue: Vol. 4751 No. 1: 16 Mar. 2020
Type: Article
Published: 2020-03-16
DOI: 10.11646/zootaxa.4751.1.11
Page range: 172–180
Abstract views: 111
PDF downloaded: 4

A new species of Hemiodus Müller (Characiformes: Hemiodontidae) from the lower Rio Xingu, Brazil

Museu Paraense Emílio Goeldi, Coordenação de Zoologia. Avenida Magalhães Barata, 376, 66040-170, Belém, PA, Brazil.
Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil. Laboratório de Ictiologia, Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil.
Laboratório de Ictiologia, Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil.
Museu Paraense Emílio Goeldi, Coordenação de Zoologia. Avenida Magalhães Barata, 376, 66040-170, Belém, PA, Brazil.
Laboratório de Ictiologia, Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil. Museu de Zoologia da Universidade de São Paulo. Caixa Postal 42494. CEP 04218-970, São Paulo, SP, Brazil.
Pisces Hemidus ternetzi Hemiodus thayeria Hemiodus tocantinensis South America taxonomy

Abstract

A new species of Hemiodus is described from the Rio Xingu basin, Pará, Brazil. It is distinguished from congeners by the combination of presence of a dark longitudinal stripe extending from head to tip of lower caudal-fin lobe, an oblique blotch on dorsal-fin, 9–11 scale rows above lateral line, 58–66 perforated lateral line scales, and 17–20 circumpeduncular scales. Comments on the conservation status of the new species, as well as its relationships among Hemiodus species, are made.

 

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