Xenopus calcaratus Peters, 1875

Sánchez-Vialas, Alberto, Calvo-Revuelta, Marta, Castroviejo-Fisher, Santiago & De, Ignacio, 2020, Synopsis of the Amphibians of Equatorial Guinea based upon the Authors’ Field Work and Spanish Natural History Collections, Proceedings of the California Academy of Sciences 66 (8), pp. 137-230 : 168

Xenopus calcaratus Peters, 1875

TYPE LOCALITY.— “Cameruns (Victoria)”, Limbe , Southwest Province, Republic of Cameroon .

DISTRIBUTION.— Xenopus calcaratus is distributed in the lowlands of Bioko and in the coastal region of Limbe, Cameroon. In Equatorial Guinea, this species is only present on Bioko, where it inhabits the low elevations at Punta Europa ( Boulenger 1906a), Basupú and Arena Blanca ( Evans et al. 2015) ( Map 24A ).

COMMENTS.— This species belongs to the subgenus Silurana . The record of X. calcaratus provided by Boulenger (1900) from “Benito River”, Río Muni, is herein allocated in the taxon X. (Silurana) mellotropicalis (see the respective comments in its species account) and, in a similar way, the record of Boulenger (1903) of X. calcaratus of “Cap Saint-Jean” (=Cabo San Juan), Río Muni, is herein considered as X. parafraseri , based on the description of the coloration pattern of the examined specimens ( Boulenger 1903) and in the extended revision of the genus by Evans et al. (2015).

SPECIMENS EXAMINED.— No specimens of the subgenus Silurana from Equatorial Guinea were found in the collections examined by us in this study.

Figures

MAPS 24A–C. Distribution maps for Equatorial Guinean records of (A) Xenopus calcaratus; (B) Xenopus mellotropicalis; (C) Xenopus parafraseri.