Class Mammalia Linnaeus, 1758 - mammals
Subclass Theria Parker & Haswell, 1897
Order Primates Linnaeus, 1758 - primates
Suborder Haplorrhini Pocock, 1918
see Suborder Haplorhini Pocock, 1918
Infraorder Simiiformes Haeckel, 1866
Parvorder Catarrhini Geoffroy Saint-Hilaire, 1812
Superfamily Cercopithecoidea Gray, 1821
Family Cercopithecidae Gray, 1821 - Old World monkeys
Subfamily Colobinae Jerdon, 1867
Genus Trachypithecus Reichenbach, 1862 - brow-ridged langurs, leaf monkeys
Trachypithecus cristatus (Raffles, 1821)
1 [Trachypithecus cristatus cristatus]ᵀ (Raffles, 1821)
2 Trachypithecus cristatus vigilans (Miller, 1913)