The Nancy Ma’s night monkey[1] (Aotus nancymaae) is a species of night monkey from South America.
- It is endemic to Brazil and Peru. These small monkeys have non-prehensile tails. Their fur is light gray to light brown.
- These monkeys belong to the “red-necked” subgroup of Aotus and have orange-red hairs on the sides of the neck, the inner lining of the limbs, and the base of the tail.
- The tail is black-tipped and hangs down, a unique characteristic of all Aotus species. The coat is short, dense, and soft.
- Their hands are well-developed for grasping, and they can move more independently than other New World primates. The genitalia of adult Nancy Ma’s night monkey is brightly colored and flared.
