Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cercopithecidae Gray, 1821 - Old World monkeys Subfamily Cercopithecinae Gray, 1821 Genus Macaca Lacépède, 1799 - macaques Macaca nemestrina (C. Linnaeus, 1766) - pigtail macaque