Leptodactylus bufonius Boulenger, 1894, Ann. Mag. Nat. Hist., Ser. 6, 13: 348. Syntypes: BMNH (4 specimens of which Parker, 1931, J. Linn. Soc. London, Zool., 37: 286-287, excluded the two smaller as Leptodactylus diptyx); BMNH 1947.2.17.72 designated lectotype by Heyer, 1978, Sci. Bull. Nat. Hist. Mus. Los Angeles Co., 29: 33. Type locality: "Asuncion, Paraguay".
Vizcacheras' White-lipped Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 81).
Southern Bolivia to northern Argentina, Paraguay, and central Brazil.
In the Leptodactylus fuscus group of Heyer, 1978, Sci. Bull. Nat. Hist. Mus. Los Angeles Co., 29: 1-85. See Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 321-325, for account. Brusquetti and Lavilla, 2006, Cuad. Herpetol., 20: 13, briefly discussed range in Paraguay.
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