A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the rio Xingu basin, Brazil

Author(s)

Marinho, Manoela M. F. ^[1]

Affiliation

^[1] Univ Sao Paulo, Museu Zool, BR-04299970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Neotropical Ichthyology; v. 8, n. 3, p. 655-659, JUL-SEP 2010.
• Web of Science Citations: 9

Abstract

A new species of Moenkhausia from the upper rio Xingu basin is described. Moenkhausia eurystaenia is distinguished from all congeners, except M. heikoi and M. phaeonota, by the presence of a dark, broad longitudinal stripe from the opercle to the end of caudal peduncle. The new species is distinguished from M. heikoi mainly by having 18-21 branched anal-fin rays (vs. 24-26) and the absence of a round blotch at the end of the caudal peduncle (vs. present). Moenkhausia eurystaenia can be distinguished from M. phaeonota mainly by the anterior portion of longitudinal band darker at horizontal septum (vs. darker below horizontal septum), the deep dark pigmentation along horizontal septum extending anteriorly up to humeral region (vs. extending up to vertical through pelvic-fin origin), number of vertebrae 34 (vs. 36-37), and others additional measurements. (AU)

• FAPESP's process: 09/15075-0 - Phylogenetic relationships and taxonomic revision of the species of Copella Myers, 1956 (Characiformes: Lebiasinidae)
• Grantee: Manoela Maria Marinho Koh
• Support Opportunities: Scholarships in Brazil - Doctorate