Hyla (Trachycephalus) vilarsi Melin, 1941, Göteborgs K. Vetensk. Vitterh. Samh. Handl., Ser. B, 1: 40. Holotype: NHMG 488, according to Duellman, 1977, Das Tierreich, 95: 150. Type locality: "Taracuá, Rio Uaupés, [Amazonas,] Brazil".
None noted.
Known only from the type locality in extreme northwestern Brazil Taracuá, Amazonas) near the Colombia border.
See account by Jungfer, 2010, Zootaxa, 2407: 41-44, who removed this species from the synonymy of Osteocephalus taurinus, where it had been placed by Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 64.
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