Their diet is broad, including fruit, flower nectar, foliage, and insects. Reproduction Aotus lemurinus is a monogamous mammal. They reach sexual maturity at approximately 2.5 years of age. Females have an ovarian cycle which ranges from 13 to 19 days. There is no external indication of estrous.
Males initiate reproduction.
Reciprocal grooming has been observed in this species only prior to mating. Gestation period is 133 days. Behavior Aotus lemurinus is nocturnal and is most active several hours after dusk and before dawn. These monkeys live in small family groups consisting of between 2 to 5 members, including the adult pair and their offspring. During the day family groups will sleep either in tree hollows, vine covered trees, or dense brush.