The three-striped night monkey[1] (Aotus trivirgatus), also known as the northern owl monkey, Humboldt’s Night Monkey, or northern night monkey, is one of several currently recognized species of owl monkeys.
- Male and female species are similar in size, with a body length of 24-47 cm. However, the length of the tail varies from 22 to 42 cm.
- Coat colors range from gray, grizzled brown, reddish, and whitish to the orange underbelly.
- Coat color varies from one geographic location to another. For this reason, in part, the three-striped night monkey is often classified by different researchers into many different species or subspecies.
- Humboldt’s night monkeys also have large orange/brown eyes. Distinctive facial features include a triangular black patch between the eyes and black stripes down the sides framing his white face.