Scorpionida Latreille, 1810 - scorpions
   Scorpiones Koch, 1837 - scorpions
     Neoscorpionina Thorell & Lindström, 1885
       Orthosterni Pocock, 1911
         Vaejovoidea Thorell, 1876
           Vaejovidae Thorell, 1876
             Vaejovinae Thorell, 1876
               Vaejovis Koch, 1836
                 Vaejovis Mexicanus group