C. Román–Valencia, R. I. Ruiz–C., D. C. Taphorn B. & C. García–Alzate
Abstract
A new endemic species of Bryconamericus (Characiformes, Characidae) from the Middle Cauca River Basin, Colombia.— Bryconamericus caldasi, a new species, is described from the Middle Cauca River drainage, Andean versant of Colombia. The new species is distinguished from all congeners by: the number of predorsal scales (15–17 vs. 9–14); a wide anterior maxilla tooth, at least twice as wide as the posterior tooth, both of which are pentacuspid (vs. maxilla teeth of same size); a dark lateral stripe overlaid by a peduncular spot; and a reticulated pattern on the sides of body (vs. peduncular spot and other body pigments not superimposed over a dark lateral stripe). We found several differences that distinguish the new species from B. caucanus, the only sympatric conge- ner: number of predorsal median scales (15–17 vs. 12–13); convex predorsal profle (vs. oblique); scale size and number of scale rows at caudal–fn base (small scales arranged in two or more rows vs. large scales in just one row); pectoral fns not or just reaching pelvic fn insertions (vs. pectoral fns reaching posterior to pelvic–fn insertions); and dorsal–fn origin position (at vertical through posterior tip of pelvic–fn vs. at a vertical anterior to pelvic–fn tip).
Quelle: Animal Biodiversity and Conservation 37.2 (2014) (pdf, öffentlich)