A new species of Bryconops Kner (Characiformes: Iguanodectidae) from the Rio Maicuru, lower Amazon basin, Brazil

Autor(es)

Silva-Oliveira, Carlison ^[1] ; Lima, Flavio C. T. ^[2] ; Bogota-Gregory, Juan D. ^[3]

Afiliação do(s) autor(es)

^[1] Inst Nacl de Pesquisas da Amazonia, Programa Posgrad Biol Agua Doce & Pesca Interior, Colecao Peixes, Av Andre Araujo 2936, Caixa Postal 2223, BR-69060001 Manaus, Amazonas - Brazil

^[2] Univ Estadual Campinas Adao Jose Cardoso, Museu Zool, Caixa Postal 6109, BR-13083863 Campinas, SP - Brazil

^[3] Univ Cent Florida, Dept Biol, 4000 Cent Florida Blv, Orlando, FL 32816 - USA

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4514, n. 3, p. 372-382, NOV 8 2018.
• Citações Web of Science: 1

Resumo

A new species of Bryconops is described from the rio Maicuru, a tributary of the left margin of the lower Amazon River, Para, 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. colanegra 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. (AU)

• Processo FAPESP: 13/20936-0 - Sistemática das piabas (gêneros Hemigrammus, Hyphessobrycon, Thayeria, Parapristella e Bryconella), com ênfase nas espécies do norte da América do Sul cis-andina
• Beneficiário: Flávio César Thadeo de Lima
• Linha de fomento: Bolsas no Brasil - Apoio a Jovens Pesquisadores
• Processo FAPESP: 11/51532-7 - Sistemática das piabas (gênero Hemigrammus, Hyphessobrycon, Parapristella e Bryconella), com ênfase nas espécies do norte da América do Sul cisandina
• Beneficiário: Flávio César Thadeo de Lima
• Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores