Order Parasitiformes
    Suborder Ixodida
            Superfamily Argasoidea
                Family Argasidae
            Superfamily Nuttallielloidea
                Family Nuttalliellidae
            Superfamily Ixodoidea
                Family Ixodidae
    Suborder Holothyrida
                Family Allothyridae
                Family Holothyridae
    Suborder Mesostigmata
        Cohort Sejina
                Family Sejidae
                Family Ichthyosomatogasteridae
                Family Uropodellidae
        Cohort Microgyniina
                Family Microgyniidae
        Cohort Epicriina
                Family Epicriidae
                Family Zerconidae
        Cohort Arctacarina
                Family Arctacaridae
        Cohort Uropodina
                Family Protodinychidae
                Family Thinozerconidae
                Family Polyaspididae
                Family Dithinozerconidae
                Family Uropodidae
                Family Trachyuropodidae
        Cohort Diarthrophallina
                Family Diarthrophallidae
        Cohort Cercomegistina
                Family Cercomegistidae
                Family Asternoseiidae
                Family Davacaridae
                Family Seiodidae
        Cohort Antennophorina
            Superfamily Aenictequoidea
                Family Aenictequidae
                Family Messoracaridae
                Family Physalozerconidae
                Family Ptochacaridae
            Superfamily Antennophoroidea
                Family Antennophoridae
            Superfamily Celaenopsoidea
                Family Celaenopsidae
                Family Schizogyniidae
                Family Megacelaenopsidae
                Family Triplogyniidae
                Family Meinertulidae
                Family Diplogyniidae
                Family Euzerconidae
                Family Neotenogyniidae
            Superfamily Fedrizzioidea
                Family Fedrizziidae
                Family Klinckowstroemiidae
                Family Promegistidae
                Family Paramegistidae
            Superfamily Megisthanoidea
                Family Hoplomegistidae
                Family Megisthanidae
            Superfamily Parantennuloidea
                Family Parantennulidae
                Family Philodanidae
        Cohort Parasitina
            Subfamily Parasitinae
            Subfamily Pergamasinae
        Cohort Dermanyssina
            Superfamily Rhodacaroidea
                Family Ologamasidae
                Family Rhodacaridae
                Family Digamasellidae
            Superfamily Veigaioidea
                Family Veigaiidae
            Superfamily Eviphidoidea
                Family Parholaspididae
                Family Pachylaelapidae
                Family Macrochelidae
                Family Megalolaelapidae
                Family Eviphididae
            Superfamily Ascoidea
                Family Ascidae
                Family Antennoseiidae
                Family Halolaelapidae
                Family Phytoseiidae
                Family Otopheidomenidae
                Family Ameroseiidae
                Family Podocinidae
            Superfamily Dermanyssoidea
                Family Laelapidae
                Family Haemogamasidae
                Family Hirstionyssidae
                Family Dermanyssidae
                Family Hystrichonyssidae
                Family Macronyssidae
                Family Rhinonyssidae
                Family Spinturnicidae
                Family Spelaeorhynchidae
                Family Halarachnidae
                Family Raillietiidae
                Family Entonyssidae
                Family Ixodorhynchidae
                Family Omentolaelapidae
                Family Dasyponyssidae
                Family Manitherionyssidae
                Family Varroidae
        Cohort Heterozerconina
                Family Heterozerconidae
                Family Discozerconidae