Saguinus lagonotus
The red-mantled saddle-back tamarin (Leontocebus lagonotus) is a species of saddle-back tamarin, a type of small monkey from South America. The red-mantled saddle-back tamarin was formerly considered to be a subspecies of the brown-mantled tamarin, L. fuscicollis. It lives in Ecuador and Peru and its type locality is in Peru, near the confluence of the Amazon River and the Napo River.