Lithobates forreri (Boulenger, 1883)

Class: Amphibia > Order: Anura > Family: Ranidae > Genus: Lithobates > Species: Lithobates forreri

Rana forreri Boulenger, 1883, Ann. Mag. Nat. Hist., Ser. 5, 11: 343. Holotype: BMNH 1882.12.5.7 according to Kellogg, 1932, Bull. U.S. Natl. Mus., 160: 207; renumbered 1947.2.3.64 according to McCranie and Wilson, 2002, Amph. Honduras: 482. Type locality: "Presidio", Sinaloa, Mexico.

Rana halecina var. forreriBoulenger, 1919, Ann. Mag. Nat. Hist., Ser. 9, 3: 413.

Rana berlandieri forreriSanders and Smith, 1971, J. Herpetol., 5: 31, 37.

Rana forreriHillis, 1981, Copeia, 1981: 313. Frost, 1982, Syst. Zool., 31: 66.

Rana (Rana) forreriDubois, 1987 "1986", Alytes, 5: 41–42, by implication.

Rana (Pantherana) forreriDubois, 1992, Bull. Mens. Soc. Linn. Lyon, 61: 331; Yuan, Zhou, Chen, Poyarkov, Chen, Jang-Liaw, Chou, Matzke, Iizuka, Min, Kuzmin, Zhang, Cannatella, Hillis, and Che, 2016, Syst. Biol., 65: 835.

Rana (Novirana, Sierrana, Pantherana, Scurrilirana) forreriHillis and Wilcox, 2005, Mol. Phylogenet. Evol., 34: 305. See Dubois, 2006, Mol. Phylogenet. Evol., 42: 317-330, Hillis, 2007, Mol. Phylogenet. Evol., 42: 331-338, and Dubois, 2007, Cladistics, 23: 390-402, for relevant discussion of nomenclature. Invalid name formulation under the International Code of Zoological Nomenclature (1999) as discussed by Dubois, 2007, Cladistics, 23: 395.

Lithobates forreriFrost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297: 369. Che, Pang, Zhao, Wu, Zhao, and Zhang, 2007, Mol. Phylogenet. Evol., 43: 1-13; by implication.

Lithobates (Lithobates) forreriDubois, 2006, C. R. Biol., Paris, 329: 829; Dubois, 2006, Mol. Phylogenet. Evol., 42: 325.

Rana (Scurrilirana) forreriHillis, 2007, Mol. Phylogenet. Evol., 42: 335-336, by implication.

English Names

Forrer's Grass Frog (Liner, 1994, Herpetol. Circ., 23: 27; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 107).

Forrer's Leopard Frog (Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 16).


Central Sonora and southwestern Chihuahua south along the Pacific coastal plain to northwestern Costa Rica; an apparently isolated population in the Balsas valley of southern Mexico.


Subgenus Rana, Rana berlandieri subgroup of the Rana pipiens group as defined by Hillis, Frost, and Wright, 1983, Syst. Zool., 32: 132–143. In equivalent Rana (Pantherana) berlandieri group of Dubois, 1992, Bull. Mens. Soc. Linn. Lyon, 61: 331. Elevated from status as a subspecies of Rana berlandieri by J. Frost, 1982, Syst. Zool., 31: 57–67. See accounts by Savage, 2002, Amph. Rept. Costa Rica: 399–400, and McCranie and Wilson, 2002, Amph. Honduras: 482–485, who noted a hybrid zone with "Rana berlandieri" (now Rana brownorum). Grismer, 2002, Amph. Rept. Baja California: 81–82, provided an account for the introduced Baja California, Mexico, population. Zaldívar-Riverón, León-Regagnon, and Nieto-Montes de Oca, 2004, Mol. Phylogenet. Evol., 30: 38–49, provided a molecular phylogenetic analysis of this species and near relatives, including several undescribed relatives: "Pagapayo", "Arcelia", and "Colima". Köhler, Vesely, and Greenbaum, 2005 "2006", Amph. Rept. El Salvador: 66–68, provided an account (as Rana forreri, and for El Salvador) and a color photograph. McCranie, 2007, Herpetol. Rev., 38: 38, summarized the departmental distribution in Honduras. Lemos-Espinal, 2007, Anf. Rept. Chihuahua Mexico: 58–59, provided an account for Chihuahua, Mexico. Köhler, 2011, Amph. Cent. Am.: 291–295, provided a brief summary of natural history and identification key for the species of Lithobates in Central America and provided a range map and photograph for this species. Valdéz-Villavicencio, Peralta-García, and Hollingsworth, 2015, Herpetol. Rev., 46: 379, provided a record in the Rio Sonora drainage at the municipality of Hermosillo, Sonora, Mexico. Rendón Suárez, Mercado-Silva, Palomera García, and Iñiguez Dávalos, 2016, Southwest. Nat., 61: 241–273 provided records from the Marabasco Basin of the Jalisco–Colima border region. 

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