Ophryophryne Boulenger, 1903, Ann. Mag. Nat. Hist., Ser. 7, 12: 186. Type species: Ophryophryne microstoma Boulenger, 1903, by monotypy.
Mountains Toads (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 86).
Northern Thailand, northern and eastern Laos, northern Vietnam and southern China.
See comment under Megophrys. Considered by Dubois, 1980, Bull. Mens. Soc. Linn. Lyon, 49: 473, to be ranked at the level of subgenus (of Megophrys), but ranked as a genus subsequently by Dubois, 1987 "1986", Alytes, 5: 23. The phylogenetic position of this taxon was discussed by Rao and Yang, 1997, Asiat. Herpetol. Res., 7: 92-102. Ohler, 2003, Alytes, 21: 23-44, revised the genus and provided a key to the species. Fei, Ye, Huang, Jiang, and Xie, 2005, Illust. Key Chinese Amph.: 87, provided a key to the Chinese species. Delorme, Dubois, Grosjean, and Ohler, 2006, Alytes, 24: 17, provided evidence that Ophryophryne is a monophyletic derivative of a paraphyletic Xenophrys. Fei, Hu, Ye, and Huang, 2009, Fauna Sinica, Amph. 2: 472-481, provided a key and accounts for the Chinese species. See comment under Megophryidae. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences, suggested that of their examplar species Ophryophryne is the sister taxon of a monophyletic group composed of "Xenophrys", Megophrys, and Brachytarsophrys. Wang, Zhang, Zhao, Sung, Yang, Pang, and Zhang, 2012, Zootaxa, 3546: 53-67, provided molecular evidence of the paraphyly of Xenophrys with respect to Ophryophryne, but did not make the nomenclatural remedy.
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