DistributionRead full entry
Range DescriptionThis is a widespread species, known from Guinea to Tanzania, and along the length of the Nile.
Central Africa: In Lower Guinea, Raiamas senegalensis is found in coastal basins from the Cross to the Sanaga, Cameroon. Elsewhere it is known from most major nilosudanic basins (Nile, Tchad, Niger, Gambie, Senegal and Volta), and in many coastal west African basins also (Sassandra, Bandama, Comoe, Tano, Pra, Oueme and Ogun).
Eastern Africa: It is found in the Turkwell drainage of the Lake Turkana system (Seegers et al. 2004). Also reported from Lake Turkana as Raiamas loati (Boulenger, 1911), a junior synonym (see Lévêque and Bigorne, 1983) (Seegers et al. 2004).
Northern Africa: It is present but rare in the upper Egyptian Nile (Luxor and Aswan).
Northeast Africa: This species is found in the White and Blue Niles to Lake Nasser (also known as Lake Nubia), as well as the Omo and Baro Rivers.
Western Africa: Raiamas senegalensis is known from the large Sudanese basins, including Chad, Niger, Gambia, Senegal and Volta. It has also been collected in several coastal basins, including the Sassandra, Bandama, Comoé, Tano, Pra, Ouémé, Ogun, up to the Sanaga which seems to represent its southern distributional limit.