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 Cercopithecinae Gray, 1821
                   Genus Cercopithecus Linnaeus, 1758 - guenons
                     Cercopithecus cephus (C. Linnaeus, 1758) - moustached monkey
                       1 [Cercopithecus cephus cephus]ᵀ (C. Linnaeus, 1758)
                       2 Cercopithecus cephus cephodes Pocock, 1907
                       3 Cercopithecus cephus ngottoensis Colyn, 1999