title: A new species of Acestrocephalus (Characiformes: Characidae) from Venezuela.
abstract: A new species of Acestrocephalus is described from 60 specimens collected in the Río Orinoco and Río Negro drainages, Venezuela. This species is distinguished from all other Acestrocephalus by the combination of the following characters: anal rays, 29-36; 63-71 perforated scales on the lateral line; 10-12 scales above and 9-12 below the lateral line; 39-52 teeth on the maxillary; 9-12 premaxillary teeth; 8-12 teeth in the inner row on the dentary; 5-7 gill rakers on the lower part of the first gill arch; humeral, peduncular and caudal blotch absent.
authors.affiliation: Museo de Historia Natural La Salle, Apartado 1930, Caracas 1010-A, Venezuela. lassoc@usa.net
authors.forename: C A
authors.initials: CA
authors.lastname: Lasso
authors.forename: D
authors.initials: D
authors.lastname: Taphorn
mesh_terms: D000818:Animals; D005399:Fishes / Q000033:anatomy & histology / Q000145:classification*; D005618:Fresh Water; D014687:Venezuela