[Superorder] Acariformes Zakhvatkin, 1952 - mitelike mites
   [Order] Trombidiformes Reuter, 1909
     Suborder Prostigmata Kramer, 1877
       Cohort Eupodina see Infraorder Eupodina Krantz, 1978
         [Superfamily] Bdelloidea Dugès, 1834
           Family Cunaxidae Thor, 1902
             Subfamily Cunaxinae Thor, 1902
               Genus Riscus Den Heyer, 2006, sedis mutabilis