Hyla rubra orientalis Lutz, 1968, Pearce-Sellards Ser., 10: 15. Holotype: MNRJ 4030, by original designation. Type locality: "Crubixá, county of Santa Leopoldina, state of Espirito Santo", Brazil. Given as "Brazil, Espírito Santo State,
Hyla rubra altera Lutz, 1973, Brazil. Spec. Hyla: 157. Replacement name for Hyla rubra orientalis Lutz, 1968.
Ololygon altera — Carvalho-e-Silva and Peixoto, 1991, Rev. Brasil. Biol., 51: 268.
Scinax altera — Pombal, Haddad, and Kasahara, 1995, J. Herpetol., 29: 1.
Scinax alter — Alves and Carvalho-e-Silva, 2002, J. Herpetol., 36: 133.
Crubixa Snouted Treefrog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 63).
Coastal region of eastern Brazil from southern Bahia to Rio de Janeiro, with inland populations in the Rio Doce valley of Minas Gerais and some highland populations in Espírito Santo.
Removed from the synonymy of Scinax catharinae, without comment, by Carvalho-e-Silva and Peixoto, 1991, Rev. Brasil. Biol., 51: 268. These authors also associated this species with the Scinax x-signatus group. Treated as a synonym of Scinax ruber by Duellman, 1977, Das Tierreich, 95: ix, 97, and Duellman and Wiens, 1993, Occas. Pap. Mus. Nat. Hist. Univ. Kansas, 153: 37-38. Pombal, Haddad, and Kasahara, 1995, J. Herpetol., 29: 5, and Pombal, Bastos, and Haddad, 1995, Naturalia, São Paulo, 20: 213-225, noted that there may be several species covered by the name Scinax alter and assigned it to the Scinax ruber group. Alves and Carvalho-e-Silva, 2002, J. Herpetol., 36: 133-137, documented differences in the tadpoles of Scinax alter and Scinax ruber. In the Scinax ruber group of Pombal, Haddad, and Kasahara, 1995, J. Herpetol., 29: 1-6. The Scinax ruber group rejected as nonmonophyletic by Faivovich, 2002, Cladistics, 18: 367-393. Izecksohn and Carvalho-e-Silva, 2001, Anf. Municipio Rio de Janeiro: 56, provided a brief account and photo. Nunes, Kwet, and Pombal, 2012, Copea, 2012: 554-569, revised and redelimited the species.
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