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 Loris Geoffroy Saint-Hilaire, 1796 - slender loris
               Loris lydekkerianus Cabrera, 1908
                 1 [Loris lydekkerianus lydekkerianus]ᵀ Cabrera, 1908
                 2 Loris lydekkerianus grandis Hill & Phillips, 1932
                 3 Loris lydekkerianus malabaricus Wroughton, 1917
                 4 Loris lydekkerianus nycticeboides Hill, 1942