Order Pseudoscorpiones De Geer, 1778
   Homosphyronida Chamberlin, 1929
     Suborder Iocheirata Harvey, 1992
       Infraorder Panctenata Balzan, 1892
         Superfamily Cheliferoidea Risso, 1826
           1 Family Chernetidae Menge, 1855
           2.1 Family Cheliferidae Risso, 1826
           2.2.1 Family Atemnidae Kishida, 1929
           2.2.2 Family Withiidae Chamberlin, 1931