Exerodonta Sumichrasti Brocchi, 1879, Bull. Soc. Philomath., Paris, Ser. 7, 3: 20. Type(s): Formerly in MNHNP; now apparently lost according to Kellogg, 1932, Bull. U.S. Natl. Mus., 160: 181. Type locality: "Santa Efigenia près de Tehuantepec", Oaxaca, Mexico.
Hylella platycephala Cope, 1879, Proc. Am. Philos. Soc., 18: 267. Syntypes: USNM 10037 (5 specimens) according to Kellogg, 1932, Bull. U.S. Natl. Mus., 160: 183, and Cochran, 1961, Bull. U.S. Natl. Mus., 220: 61. Type locality: "Tehuantepec . . . . from Japana, from an elevation of from 2000 to 3000 feet", Mexico; rendered as "Tapana, near Santa Efigenia, Tehuantepec, Oaxaca, Mexico, 2000-3000 ft" by Cochran, 1961, Bull. U.S. Natl. Mus., 220: 61. Synonymy by Boulenger, 1891, Ann. Mag. Nat. Hist., Ser. 6, 8: 456.
Hylella sumichrasti — Boulenger, 1882, Cat. Batr. Sal. Coll. Brit. Mus., Ed. 2: 420.
Hyla sumichrasti — Duellman and Hoyt, 1961, Copeia, 1961: 414-417.
Exerodonta sumichrasti — Faivovich, Haddad, Garcia, Frost, Campbell, and Wheeler, 2005, Bull. Am. Mus. Nat. Hist., 294: 101.
Sumichrast's Treefrog (Liner, 1994, Herpetol. Circ., 23: 23; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 58; Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 13).
Pacific slopes of southern Mexico (Guerrero, Oaxaca, and Chiapas) and Chiapan highlands, Mexico.
See account by Duellman, 1970, Monogr. Mus. Nat. Hist. Univ. Kansas: 409-413. See also Mendelson and Campbell, 1994, Proc. Biol. Soc. Washington, 107: 398-409, for comments on related species. In the Exerodonta sumichrasti group of Faivovich, Haddad, Garcia, Frost, Campbell, and Wheeler, 2005, Bull. Am. Mus. Nat. Hist., 294: 101.
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