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 Gamasina Kramer, 1881
see Infraorder Gamasina Kramer, 1881
a Subcohort Epicriiae Vitzthum, 1938
see Hyporder Epicriiae Kramer, 1885
b Subcohort Arctacariae [monotypic]
see Hyporder Arctacariae Johnston, 1982
c Subcohort Parasitiae Reuter, 1909 [monotypic]
see Hyporder Parasitiae Evans & Till, 1979
d Subcohort Dermanyssiae Evans & Till, 1979
see Hyporder Dermanyssiae Evans & Till, 1979