Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cebidae Bonaparte, 1831 - New World monkeys Subfamily Pitheciinae Mivart, 1865 Genus Cacajao Lesson, 1840 - uakaris Cacajao melanocephalus (Humboldt, 1812) - black-headed uakari