Román-Valencia, Garcia-Alzate, Ruiz-C. & Taphorn, 2010
Bryconamericus macarenae n. sp. (Characiformes, Characidae) from the Güejar River, Macarena mountain range, Colombia.Abstract
Bryconamericus macarenae n. sp. (Characiformes, Characidae) from the Güejar River, Macarena mountain range, Colombia.— Based on 174 specimens, using morphometric, meristic and osteological characters, we describe a new species: Bryconamericus macarenae from the Güejar River in La Macarena mountain range, Orinoco Basin, Colombia. It differs from congeners in having: an incomplete lateral line (vs. complete lateral line in all except B. delta) and fewer and less conspicuous perforations in the latero–sensorial canal of the extrascapular bone (vs. conspicuous latero–sensorial canal perforation). It has four or fewer unbranched analfin rays (vs. five or more unbranched anal–fin rays), a short, thickened extrascapular bone without projections from the posterior margin, or with only a reduced apophysis (vs. extrascapular long, irregular, bony projections on its margins, and with a large undulated apophysis on its posterior margin). It also differs in live coloration. A key of species of Bryconamericus known from the Orinoco Basin and the Catatumbo River is included.
C. Román-Valencia, C.A. Garcia-Alzate, R.I. Ruiz-C. & D.C. Taphorn
Animal Biodiversity and Conservation, 33 (2): 195-203.