The lesser spot-nosed guenon is marked by a white nose spot and beard. It carries food in cheek pouches.
Its coat is brown to gray, with a white beard and a white spot on the nose.
The lesser spot-nosed guenon is a small West African monkey whose population in Guinea-Bissau is thought to remain on the Bijagós Islands. In 2022, researchers interviewed residents and made field observations on two islands. On the first island, residents said the monkeys were commonly seen but their numbers were falling. Researchers visited seven villages and recorded cleared forest, cashew orchards, and hunted monkeys.
They also documented habitat loss or degradation, hunting, and the transport of monkey meat from ports to larger markets. On the second island, residents said the species was less common than green monkeys, though some reported numbers rising after hunting regulations were enforced. The team collected faecal samples for genetic study of the island populations.
An extinction-risk assessment has not been added yet.
On two Bijagós islands, forest loss or degradation and hunting are conservation concerns. Residents reported a decline on one island, while some said numbers had risen after hunting rules were enforced on the other.