Nemadoras cristinae, new species of thorny catfish (Siluriformes: Doradidae) with redescriptions of its congeners

摘要: ABSTRACT. Nemadoras cristinae is described from the upper Amazonas/Solimoes and Madeira basins in Brazil, Colombia Peru, with additional specimens Meta (Orinoco basin), Colombia, tentatively treated as conspecific. distinguished congeners by having 3–9 premaxillary teeth approximately two rows juveniles adults, outermost weakly spatulate innermost more acicular (vs. edentulous adults of all limited to 1–6 N. elongatus, humeralis, leporhinus ternetzi); mental barbels extremely elongate (filiform) papillae, length longest papillae about 4–7 times its width at base shorter, <3 base). most closely resembles leporhinus, but further that species shaft primary fimbriae maxillary barbel smooth outer margin margins ...