Endemic to Nigeria and Cameroon. Has been recorded as ranging from the Niger R. eastwards to the Sanaga R., but there are also records of the species from west of the Niger Delta (Van Rompaey and Colyn in press). The region between the Niger Delta and the Cross R. is heavily populated and a mosaic of forest patches and cultivated land, but recent records do exist: for example, one was recently bought at the roadside near Azumini (Angelici and Luiselli 2005). Gaubert et al. (2006) give records that show this species ranging more than 500 km south of the Sanaga R. to southern Cameroon, Gabon and Republic of Congo, as well as 180 km west of the known range in Nigeria between Oni and Epe (but these are not mapped). Ranges to more than 1,000 m asl.