A New Species Of Bryconops Kner (Characiformes: Iguanodectidae) From The Rio Maicuru, Lower Amazon Basin, Brazil

Keywords

Bryconops piracolina; Creatochanes; Guyana shield; Taxonomy

Abstract

A new species of Bryconops is described from the rio Maicuru, a tributary of the left margin of the lower Amazon River, Pará, Brazil. Bryconops chernoffi new species, differs from all its congeners by the presence of an elongated dark patch of pigmentation immediately after the posterodorsal margin of the opercle, running vertically from the supracleithrum to the distal margin of the cleithrum (vs. Absence of a similar blotch), and by a dark dorsal fin with a narrow hyaline band at middle portion of dorsal-fin rays (vs. Dorsal fin hyaline or with few scattered chromatophores). It differs further from all its congeners, except B. Colanegra, by the presence of a blurred black stripe at the anal fin base. It differs from B. Colane-gra by possessing fewer predorsal scales (8-9 vs. 10-11) and in that the third infraorbital contacts the preopercle ventrally (vs. Third infraorbital not contacting preopercle ventrally). The new species is assigned to the subgenus Creatochanes by the number of maxillary teeth, and ossification and denticulation of the gill rakers.

Publication Date

11-8-2018

Publication Title

Zootaxa

Volume

4514

Issue

3

Number of Pages

372-382

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.11646/zootaxa.4514.3.4

Socpus ID

85056309707 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85056309707

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