A new species of Knodus (Characiformes: Characidae: Stevardiinae) from the rio Aripuana, rio Madeira basin, Brazil

Autor(es)

Menezes, Naercio A. ^[1] ; Ferreira, Katiane M. ^[2] ; Netto-Ferreira, Andre L. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Museu Zool, Ave Nazare 481, BR-04218970 Sao Paulo, SP - Brazil

^[2] Univ Fed Mato Grosso, Inst Biociencias, Dept Biol & Zool, Lab Ictiol, Av Fernando Correia da Costa 2367, BR-78060900 Cuiaba, MT - Brazil

^[3] Univ Fed Rio Gande do Sul, Inst Biociencias, Dept Zool, Lab Ictiol, Ave Bento Goncalves 9500, BR-91501970 Porto Alegre, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 18, n. 2 2020.
• Citações Web of Science: 0

Resumo

A new species of the characid genus Knodus is described from the rio Aripuana (rio Madeira basin). It can be distinguished from its congeners by its very low body depth, the presence of tri- to pentacuspid teeth on the outer premaxillary series, with the median cuspid larger than the lateral ones, the teeth of the inner premaxillary series pentacuspid, distinctly larger than those of the outer series, the maxillary teeth tri- to pentacuspid, with the median cusp slightly larger than the lateral ones, the four anteriormost dentary teeth pentacuspid, the smaller posterior teeth tri- to pentacuspid, a complete lateral line with 36-38 scales, 3 longitudinal scale series from pelvic fin origin to lateral line, and 11-12 circumpeduncular scales. The new species is also compared to incertae sedis species of `Bryconamericus' from northern South America since phylogenetic studies suggest a closer relationship of those species with Knodus. (AU)

• Processo FAPESP: 02/05464-0 - Análise filogenética e revisão taxonômica do gênero Knodus Eigenmann, 1910 (Characiformes: Characidae)
• Beneficiário: Katiane Mara Ferreira
• Modalidade de apoio: Bolsas no Brasil - Doutorado