Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Cercopithecidae Gray, 1821 - Old World monkeys Subfamily Colobinae Jerdon, 1867 Genus Semnopithecus Desmarest, 1822 - Hanuman langur 1 Semnopithecus entellus (Dufresne, 1797) - Hanuman langur