White-throated guenon (Latin - Cercopithecus erythrogaster) is one of species of marmosets.
Lives in wet tropical forests in lower part of Benin, Nigeria, and, maybe, Togo.
Because of narrow range of inhabitant, the species is rare and is in the Red Book of IUCN as vulnerable. The reason is human - deforestation for wood and poaching for beautiful fur.
Cercopithecus erythrogaster erythrogaster - Benin, Nigeria and Togo.
Cercopthecus erythrotis pococki - South-West part of Nigeria.