Scythrophrys Lynch, 1971, Misc. Publ. Mus. Nat. Hist. Univ. Kansas, 53: 162. Type species: Zachaenus sawayae Cochran, 1953, by original designation.
Banhado Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 84).
Serra do Mar in the states of Paraná and Santa Catarina, Brazil.
Considered as having uncertain relationships to other genera, according to Heyer, 1983, Arq. Zool., São Paulo, 30: 276. Lourenço, Garcia, and Recco-Pimentel, 2003, Genet. Mol. Biol., 26: 139-143, discussed restriction fragment analysis of rDNA and suggested a close relationship with Paratelmatobius. See comment under Paratelmatobius. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences, confirmed this relationship.
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