Differentiated from the green monkeys, like the vervet and the patas monkeys, which are ground dwellers, the Spot-nosed Guenon is one of the monkeys known as forest guenons. Despite the large number of species, these primates are little known because they tend to be middle-canopy dense forest monkeys and have been regularly hunted by humans. They are difficult to study. The geographical range of various species of Guenon has not been sufficiently investigated and demographic maps are rough. Rainforested West Africa is their general habitat, though.
Guenons are generally somewhat smaller than macaques.
Brown dorsal fur with bluish cast on the sides and legs, white ventrally including inside arms, legs and under the tail. Wild - Over half of the wild diet is fruit, and about one quarter is invertebrates. Leaves and tree gum are also eaten. Excellent color vision, as with most primates, allows identification of ripe fruit from a distance. Conspicuous colors and markings, particularly on the face and tail, allow easier recognition of the species.