Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cercopithecidae Gray, 1821 - Old World monkeys Subfamily Cercopithecinae Gray, 1821 Genus Cercocebus Geoffroy Saint-Hilaire, 1812 - mangabeys Cercocebus torquatus (Kerr, in Linnaeus, 1792) - white-collared mangabey