Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cebidae Bonaparte, 1831 - New World monkeys Subfamily Pitheciinae Mivart, 1865 Genus Pithecia Desmarest, 1804 - sakis Pithecia monachus (É. Geoffroy Saint-Hilaire, 1812) - monk saki