Dictionary of Human Evolution and Biology

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Aotus Illiger, 1811

Platyrrhine genus to which the owl monkeys belong; aka night monkeys, douroucoulis. This genus has recently undergone a systematic revision; as many as ten species recognized in two species groups. Range from Panama through the Amazon to the Chaco of Argentina. Vary in body size from 800 to 1200 g. Not sexually dimorphic. Arboreal; found in upper canopy of dense forests; occupy dry shrub in the Chaco. The only nocturnal anthropoid. Arboreal quadrupeds and leapers. Dental formula: 2.1.3.3/ 2.1.3.3. Frugivorous with leaf and insect supplements. Monogamous. Solitary individuals give owl-like hoots.

See Aotus species groups.

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