Douroucouli
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.
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 (http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=572811) 2002-07-26