Arthroleptis adelphus Perret, 1966

Class: Amphibia > Order: Anura > Family: Arthroleptidae > Subfamily: Arthroleptinae > Genus: Arthroleptis > Species: Arthroleptis adelphus

Arthroleptis adelphus Perret, 1966, Zool. Jahrb., Jena, Abt. Syst., 93: 397. Holotype: MHNG 1042.12, by original designation. Type locality: "Foulassi", near Sangmelima, Cameroon.

English Names

Foulassi Screeching Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 36).

Granular Squeaker (Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 262). 


Forests of southeastern Nigeria, southern Cameroon, Equatorial Guinea (including the island of Bioko), and Gabon; likely in western Rep. Congo and southwestern Central African Republic.

Geographic Occurrence

Natural Resident: Cameroon, Equatorial Guinea, Gabon, Nigeria

Likely/Controversially Present: Central African Republic, Congo, Republic of the


See Amiet, 1973, Ann. Fac. Sci. Cameroun, 13: 150-151. Gabon records provided by Lötters, Gossmann, Obame, and Böhme, 2001, Herpetofauna, Weinstadt, 23: 22, and Frétey and Blanc, 2002 "2001", Bull. Soc. Zool. France, 126: 381. Lasso, Rial, Castroviejo, and De la Riva, 2002, Graellsia, 58: 21-34, provided notes on ecological distribution in Equatorial Guinea. Frétey, 2008, Alytes, 25: 99-172, summarized the literature. See brief comment regarding range and habitat in Gabon by Larson and Zimkus, 2018, Herpetol. Conserv. Biol., 13: 244. Nneji, Adeola, Okeyoyin, Onadeko, Eniang, Adeyi, Oladipo, Adedeji, Usongo, Andem, Ugwumba, Ugwumba, and Olory, 2019, Check List, 15: 53–258, reported the species from Cross River National Park, south-eastern Nigeria and who noted genetic structure among samples. Deichmann, Mulcahy, Vanthomme, Tobi, Wynn, Zimkus, and McDiarmid, 2017, PLoS One, 12 (11: e0187283): 13, provided molecular evidence that this may be a species complex. Dewynter, Frétey, Jongsma, Bamba-Kaya, and Pauwels, 2018, Cah. Fondation Biotope, 18: 18, provided a brief account and photographs of Arthroleptis cf. adelphus from the Monts Birougou area of Gabon. Dewynter and Frétey, 2019, Cah. Fondation Biotope, 27: 6, summarized the literature for Gabon and provided a photograph (p. 43). Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 262–263, provided a brief account, photograph, and range map. Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 262–263, provided a brief account, photograph, and range map. See brief account and photos for Equatorial Guinea by Sánchez-Vialas, Calvo-Revuelta, Castroviejo-Fisher, and De la Riva, 2020, Proc. California Acad. Sci., Ser. 4, 66: 146. 

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