Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Primates Linnaeus, 1758 - primates
       Suborder Strepsirrhini Geoffroy Saint-Hilaire, 1812
         Infraorder Lorisiformes Gregory, 1915
           Family Lorisidae Gray, 1821, orth. cons. - lorises, pottos, and galagos
             Genus Nycticebus Geoffroy Saint-Hilaire, 1812 - slow lorises
               1 Nycticebus bengalensis (Lacépède, 1800)
               2 Nycticebus coucang (Boddaert, 1785) - slow loris
               3 Nycticebus pygmaeus Bonhote, 1907 - pygmy slow loris