Insuetophrynus acarpicus Barrio, 1970, Physis, Buenos Aires, 30: 334. Holotype: CHINM 3697, by original designation; now in MACN. Type locality: "Mehuin, prov. Valdivia, Chile".
Barrio's Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 81).
Temperate Chilean forest in the Valdivian region from Queule and Colequal Alto in the north south to Chanchan, 50 to 200 m elevation.
Diaz, Valencia, and Sallaberry-Ayerza, 1983, Copeia, 1983: 30-37, commented on life history, morphology, karyology, and molecular features. Soto-M., Méndez-Torres, Torres-Pérez, and Ibarra-Vidal, 2002, Herpetol. Rev., 33: 317, provided new localities. Méndez-Torres, Torres-Pérez, Correa-Quezada, Soto-M., Nuñez, Veloso, and Armesto, 2006, Herpetol. J., 16: 93-96, reported on genetic divergence among populations. See photograph, map, description of geographic range and habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 400. Rabanal and Nuñez, 2012, Check List, 8: 810-812, provided an extension into the Valdivian coastal range and commented on the range.
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