This arboreal monkey has separate ranges in southeastern Nigeria and northwestern Cameroon, and on Bioko Island. It feeds mainly on fruit.
It has distinctive red ear tufts and a red bridge of the nose. Its cheeks range from cream to dark gray.
It is active by day and feeds mainly on fruit, along with seeds, flowers and young leaves. Canopy use differs between the mainland and Bioko Island.
An extinction-risk assessment has not been added yet.