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 Subcohort Arctacariae [monotypic] see Hyporder Arctacariae Johnston, 1982 1 Superfamily Arctacaroidea Evans, 1955