A titi monkey treated as a distinct species in Peru. The 2025 update gives a type locality near the Río Sepa but questions some distant photo-based records.
A black forehead band extends behind the ears. The cheeks and back are brownish agouti, the hands and feet are black, and the dark tail lightens to a grayish tip.
The 2025 account reports encountering 35 individuals in dark forest and notes that their dark coats were difficult to inspect in low light.
An extinction-risk assessment has not been added yet.