Three-striped night monkey

The three-striped night monkey, Aotus trivirgatus, also called the northern night monkey or northern owl monkey, is a night monkey of Venezuela and north-central Brazil. Until 1983 all owl monkeys were regarded as subspecies of this one species and were all called douroucoulis, which is why the name douroucouli is now sometimes used for the whole genus and sometimes only for this species. It lives in woodland including rain forest and is mainly black with striking white markings on the face, a body of 27 to 48 centimetres with a tail about as long, and adults of up to a kilogram. Its very large eyes suit it to moonlit nights, when it feeds on fruit, nuts, leaves, insects, other small invertebrates and birds' eggs. Pairs bond until one dies, and a single infant is born after a little over four months. It is listed as Least Concern.