Class Scorpionida Latreille, 1810 - scorpions
   Order Scorpiones Koch, 1837 - scorpions
     Suborder Neoscorpionina Thorell & Lindström, 1885
       Infraorder Orthosterni Pocock, 1911
         Superfamily Scorpionoidea Latreille, 1802
           Family Scorpionidae Latreille, 1802
             1 Genus Scorpio Linnaeus, 1758
             2 Genus Opistophthalmus Koch, 1837
             3 Genus Pandinus Thorell, 1876
             4 Genus Heterometrus Ehrenberg, 1828