Conraua alleni (Barbour and Loveridge, 1927)

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

Pseudoxenopus alleni Barbour and Loveridge, 1927, Proc. New England Zool. Club, 10: 14. Holotype: MCZ 11991, by original designation. Type locality: "Firestone Plantation No. 3, Du River", Liberia.

Rana alleniBarbour and Loveridge, 1930, in Strong (ed.), Afr. Rep. Liberia Belgian Congo, 2: 778. Parker, 1931, Ann. Mag. Nat. Hist., Ser. 10, 7: 493.

Rana crassipes alleniLoveridge, 1941, Proc. U.S. Natl. Mus., 91: 114.

Rana (Conraua) crassipes alleniGuibé and Lamotte, 1958, Mem. Inst. Franç. Afr. Noire, 53: 251-253.

Conraua crassipes alleniSchiøtz, 1964, Vidensk. Medd. Dansk Naturhist. Foren., 127: 6. Perret, 1966, Zool. Jahrb., Jena, Abt. Syst., 93: 331.

Conraua alleniLamotte and Perret, 1968, Bull. Inst. Fondam. Afr. Noire, Ser. A, 30: 1603-1644.

English Names

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

Allen's Giant Frog (Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 348).  


High-gradient streams in rainforest in northern Sierra Leone through southern Guinea and Liberia to southwestern Ivory Coast.

Geographic Occurrence

Natural Resident: Guinea, Ivory Coast, Liberia, Sierra Leone


See Schiøtz, 1964, Vidensk. Medd. Dansk Naturhist. Foren., 127: 25, for synonymy. Rödel and Bangoura, 2004, Tropical Zool., 17: 219, briefly discussed the range and reported the species in Guinea, although noting some concern for identification. 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: 477, who noted that records from Togo and Ghana are referable to Conraua deroori, and they provided a personal communication from M.-O. Rödel that this taxon is a species complex. Channing, Rödel, and Channing, 2012, Tadpoles of Africa: 257–258, provided information on comparative larval morphology. Rödel and Glos, 2019, Zoosyst. Evol., 95: 21, reported this species from the Krahn-Bassa Proposed Protected Area in southeastern Liberia and the Foya Proposed Protected Area in western Liberia. Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 348–349, provided a brief account, photograph, and range map. Blackburn, Nielsen, Barej, Doumbia, Hirschfeld, Kouamé, Lawson, Loader, Ofori-Boateng, Stanley, and Rödel, 2020, Zool. Scripta, 49: 684–696, mapped the species and discussed cryptic species diversity. Kanga, Kouamé, Zogbass, Gongomin, Agoh, Kouamé, Konan, Adepo-Gourène, Gourène, and Rödel, 2021, Amph. Rept. Conserv., 15: 71–107, commented on conservation status, identification, range, and habitat on the Ivory Coast side of Mont Nimba.   

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