Subclass Acari Leach, 1817 - mites and ticks
   Superorder Parasitiformes Reuter, 1909 - ticks and ticklike mites
     Order Mesostigmata Canestrini, 1891
       Suborder Monogynaspida Camin & Gorirossi, 1955
         Cohort Uropodina Kramer, 1881 see Infraorder Uropodina Kramer, 1881
           Subcohort Uropodiae Kramer, 1881 see Infraorder Uropodina Kramer, 1881
             Superfamily Polyaspidoidea Berlese, 1913 see Superfamily Uropodoidea Kramer, 1881
               1 Family Trachytidae Trägårdh, 1938
               2 Family Polyaspididae Berlese, 1913
               3 Family Dithinozerconidae Krantz, 1978 [monotypic]