Order Scorpiones Koch, 1837 - scorpions
   Suborder Neoscorpionina Thorell & Lindström, 1885
     Infraorder Orthosterni Pocock, 1911
       Parvorder Iurida Soleglad & Fet, 2003
         Superfamily Chactoidea Pocock, 1893
           Family Chactidae Pocock, 1893
             Subfamily Chactinae Pocock, 1893
               Tribe Nullibrotheini Soleglad & Fet, 2003 [monotypic]
                 1 Genus Nullibrotheas Williams, 1974