New species of the catfish genus Trichomycterus (Siluriformes, Trichomycteridae) from the headwaters of the rio São Francisco basin, Brazil. Author Wolmar Benjamin Wosiacki text Zootaxa 2004 592 1 12 http://www.zoobank.org/urn:lsid:zoobank.org:pub:003431F8-DD57-4C9A-ACF9-B7F180E65729 journal article z00592p001 7907434C-6261-48ED-9034-27A3F4115F6E T. davisi FMNH 54242 (9 ex. 2 X-ray) Syntypes; FMNH 54242 (9 ex.) Syntypes; FMNH 60309 (X-ray) Holotype; MCP 10646 (2 ex.);