Class Scorpionida Latreille, 1810 - scorpions
   Order Scorpiones Koch, 1837 - scorpions
     Suborder Neoscorpionina Thorell & Lindström, 1885
       Infraorder Orthosterni Pocock, 1911
         Superfamily Vaejovoidea Thorell, 1876
           Family Vaejovidae Thorell, 1876
             Subfamily Syntropinae Kraepelin, 1905
               Tribe Syntropini Kraepelin, 1905 see Subfamily Syntropinae Kraepelin, 1905
                 Genus Serradigitus Stahnke, 1974