The head has a brown crown, broad whitish brow band, grey mask of bare skin and bushy pale cheek fur.

On either side of the base of the tail are a pair of patches of white hair which closely resemble the ischial callosities found in baboons and other Old World monkeys in this position.

[3] The mona monkey is native to the lowland forests of eastern Ghana, Togo, Benin, Nigeria and western Cameroon.

[1] The mona monkey is usually found in groups of about twelve individuals, with a single mature male, but larger aggregations also occur.

The troop moves through the canopy foraging mainly for fruit, but also eating flowers, seeds and insects and other invertebrates.