Five new Somoplatus species, Somoplatus depilis sp. n., S. pilicollis sp. n., S. morettoi sp. n., S. ivoirensis sp. n. and S. genierorum sp. n. from Ivory Coast and Burkina Faso are described and illustrated. Paralophidius septentrionalis (Burgeon, 1936) is reinstated in the genus Somoplatus Dejean, 1829, and the new synonymy Paralophidius Basilewsky, 1986 = Somoplatus Dejean, 1829 is proposed. All specimens from the Ivory Coast were collected in abandoned termite hills in savannah habitats. One specimen of S. pilicollis sp. n. and the specimens of S. genierorum sp. n. were collected using light traps and flight interception traps in Burkina Faso. Basilewsky's key of the genus Somoplatus Dejean (Basilewsky, 1986) is updated to include the new species.