Order Scorpiones Koch, 1837 - scorpions
   Suborder Neoscorpionina Thorell & Lindström, 1885
     Infraorder Orthosterni Pocock, 1911
       Parvorder Iurida Soleglad & Fet, 2003
         Superfamily Chactoidea Pocock, 1893
           Family Euscorpiidae Laurie, 1896
             Subfamily Megacorminae Kraepelin, 1905 see Family Euscorpiidae Laurie, 1896
               1 Tribe Megacormini Kraepelin, 1905 see Family Euscorpiidae Laurie, 1896
               2 Tribe Chactopsini Soleglad & Sissom, 2001 [monotypic]