The Tonkean macaque is native to central Sulawesi and the nearby Togian Islands in Indonesia. It uses several kinds of tropical forest.
Its face is black and its coat is mostly black, with brown or gray areas around the cheeks and rump. Its tail is short.
In 2021, researchers interviewed residents and road users along the Palu–Parigi road, which crosses protected forest and Pangi Binangga Nature Reserve in Central Sulawesi, Indonesia. The survey considered two Sulawesi macaques together: Heck’s macaque and the Tonkean macaque. It collected 42 responses about sightings and interactions where forest and road meet.
Among 31 nearby farmers and traders, 25 reported macaques entering gardens and eating or damaging crops. The listed crops included avocado, cloves, cocoa, and other fruit. All 11 road users had seen macaques beside the road. The interviews record how the two macaque species and people share this part of the reserve landscape.
An extinction-risk assessment has not been added yet.
Twenty-five of 31 nearby farmers and traders reported macaques entering gardens. Thirty-three of the 42 respondents said they did not know the macaques’ natural foods.