Douroucouli
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Cebidae
Genus: Aotus
Species
Aotus azarai
Aotus brumbacki
Aotus hershkovitzi
Aotus infulatus
Aotus lemurinus
Aotus miconax
Aotus nancymaae
Aotus nigriceps
Aotus trivirgatus
Aotus vociferans

Ref: ITIS 572811 2002-07-26
The douroucouli is a monkey of the genus Aotus. The genus name means "earless"; they have ears, of course, but the external ears are tiny and hard to see. They are also called "night monkeys" because they are active at night.