New species of the catfish genus Trichomycterus (Siluriformes, Trichomycteridae) from the headwaters of the rio São Francisco basin, Brazil. Wolmar Benjamin Wosiacki Zootaxa 2004 592 1 12 58FG9 Eigenmann 1928 Actinopterygii Trichomycteridae Trichomycterus Animalia Siluriformes 9 Chordata species chiltoni  ANSP 91039 (1 ex.); CAS 57596, Holotype; CAS 57597(68 ex.) Paratypes; CAS 57598 (4 ex.) Paratypes;