Ptychadena Boulenger, 1917

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 : 169

Ptychadena Boulenger, 1917

Ptychadena aequiplicata (Werner, 1898) Photo figures 22C–D TYPE LOCALITY.— “ Kamerun (Victoria und Buca)” Limbé and Buea , Cameroon.

DISTRIBUTION.— This species occurs across the rainforests of southern Guinea, Ivory Coast, eastern Liberia, and southwards to Central African Republic and western Democratic Republic of Congo. In Equatorial Guinea, it has been recorded both in Río Muni, at Cabo San Juan ( Boulenger 1903), Benito River ( Boulenger 1900), Monte Alén region ( De la Riva 1994) and Bioko, at Basupú ( Bocage 1895a) ( Map 25A ).

COMMENTS.— Two records of Ptychadena mascareniensis (Duméril and Bibron, 1841) deserve some comments. The first one, from Cabo San Juan ( Río Muni) was provided by Boulenger (1903), and the second one (misspelled as “ P. mascaraniensis ”) by Gonwouo and Nsang (2005) for the region of Monte Mitra, in Monte Alén National Park. However, due to the lack of reliable records and the morphological similarity with P. aequiplicata (a very common species in Cabo San Juan and in Monte Alén National Park), we herein consider these records as P. aequiplicata .

SPECIMENS EXAMINED.— Eighty-five specimens. Bata (Nº02681); Miboman ( EBD 18277– 18278 ) ; Miboman , Km 27 Ctra Bata-Niefang, December 1987 ( EBD 27881 ) , April 1988 ( EBD 27882–27890 , EBD 27892–27894 , EBD 27896 ), October 1987 ( EBD 27891 , EBD 27895 , EBD 27897 , EBD 27865–27872 , 27874–27879 ), April 1988 ( EBD 27873 , EBD 27880 ) ; Noayong (Evinayong-Aconibe), 19 April 1987 ( EBD 25046 ) ; Asonga-Bata , 24 July 1984 ( EBD 18615 ) ; Akurenam , 24/27/28/ 29 August 1984 ( EBD 18395–18405 , EBD 18433–18436 , EBD 18438– 18439 , EBD 18463 ), 24 August 1984 ( EBD 18446 ) ; Río Muni (17 specimens with a single label EBD 20995 ) ; San Joaquín de Ndyiacom (7 specimens with a single label EBD 31517 ) ; Evinayong , Bata ( EBD 18265–18271 ) ; Cabo San Juan , Río Muni, August / September 1901 ( MNCN 3865– 3871 ) ; Cabo San Juan , Río Muni, 15 September 1901 ( MNCN 3876 ) ; Lago de Monte Alén , 22 August 2001 ( MNCN 46337 ) .

Figures

MAPS 25A–C. Distribution maps for Equatorial Guinean records of (A) Ptychadena aequiplicata; (B) Aubria subsigillata; (C) Amnirana albolabris.