Conraua crassipes (Buchholz and Peters, 1875)

Class: Amphibia > Order: Anura > Family: Conrauidae > Genus: Conraua > Species: Conraua crassipes

Rana crassipes Buchholz and Peters In Peters, 1875, Monatsber. Preuss. Akad. Wiss. Berlin, 1875: 201. Holotype: ZMB 8360 according to Bauer, Günther, and Klipfel, 1995, in Bauer et al. (eds.), Herpetol. Contr. W.C.H. Peters: 50. Type locality: "Abo", north of Douala, Cameroon. Mapped in Heinersdorff, 1880, R. Buchholz' Reisen W.-Afr.: foldout map. 

Rana perpalmata De Witte, 1922, Rev. Zool. Afr., 10: 320. Syntypes: MRAC (6 specimens), by original designation. Type locality: "Butu Polo, River. Mapanga", "Kai Bumba, Rv. Mala", Ganda Sundi, Riv. Mateke", all three localities in the "Bassin du Chiloango", Dem. Rep. Congo. Synonymy by Parker, 1936, Proc. Zool. Soc. London, 1936: 138; Perret, 1966, Zool. Jahrb., Jena, Abt. Syst., 93: 351.

Rana (Rana ) perpalmataDe Witte, 1930, Rev. Zool. Bot. Afr., 19: 258.

Paleorana crassipesScortecci, 1931, Atti Soc. Ital. Sci. Nat. Mus. Civ. Stor. Nat. Milano, 70: 17.

Paleorana perpalmataScortecci, 1931, Atti Soc. Ital. Sci. Nat. Mus. Civ. Stor. Nat. Milano, 70: 17.

Rana (Conraua) crassipesParker, 1936, Proc. Zool. Soc. London, 1936: 138.

Rana (Conraua) perpalmataLaurent, 1940, Rev. Zool. Bot. Afr., 33: 281.

Conraua crassipes crassipesPerret, 1966, Zool. Jahrb., Jena, Abt. Syst., 93: 351.

English Names

Abo Slippery Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 98).

Thick-legged Giant Frog (Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 348).  


Southeastern Nigeria south through southern Cameroon through Equatorial Guinea, Gabon, and western Rep. Congo to westernmost Dem. Rep. Congo; Bioko I.; presumably to be found in the Cabinda Enclave, Angola, and extreme southwestern Central African Republic. 

Geographic Occurrence

Natural Resident: Cameroon, Congo, Democratic Republic of the, Congo, Republic of the, Equatorial Guinea, Gabon, Nigeria

Likely/Controversially Present: Angola, Central African Republic


De la Riva, 1994, Rev. Esp. Herpetol., 8: 130, provided a record for Equatorial Guinea. Frétey and Blanc, 2002 "2001", Bull. Soc. Zool. France, 126: 384, reported this species from Gabon. Lasso, Rial, Castroviejo, and De la Riva, 2002, Graellsia, 58: 21-34, provided notes on ecological distribution in Equatorial Guinea. Schiøtz, 1963, Vidensk. Medd. Dansk Naturhist. Foren., 125: 30, provided records for Nigeria. Channing, Rödel, and Channing, 2012, Tadpoles of Africa: 258–259, provided information on comparative larval morphology.  Jongsma, Tobi, Dixon-MacCallum, Bamba-Kaya, Yoga, Mbega, Mve Beh, Emrich, and Blackburn, 2017, Amph. Rept. Conserv., 11 (1: e144): 8–9, provided a record for southeastern Gabon and briefly discussed habitat and range. Dewynter, Chirio, Melki, Cordier, and Frétey, 2017, Cah. Fondation Biotope, 11: 12, provided a brief account and photographs of this species from the Mount Koumouna-Bouali area of Gabon. Dewynter, Frétey, Jongsma, Bamba-Kaya, and Pauwels, 2018, Cah. Fondation Biotope, 18: 25, provided a brief account and photographs from the Monts Birougou area of Gabon. Dewynter and Frétey, 2019, Cah. Fondation Biotope, 27: 19, summarized the literature for Gabon and provided photographs (p. 54). Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 348–349, provided a brief account, photograph, and range map. See brief account, range map, and photographs for Equatorial Guinea in Sánchez-Vialas, Calvo-Revuelta, Castroviejo-Fisher, and De la Riva, 2020, Proc. California Acad. Sci., Ser. 4, 66: 137–230. Blackburn, Nielsen, Barej, Doumbia, Hirschfeld, Kouamé, Lawson, Loader, Ofori-Boateng, Stanley, and Rödel, 2020, Zool. Scripta, 49: 684–696, considered it to be the sister taxon of Conraua beccarii.   

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