| Arachnida (Class) |
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| Arachnida Acari Leach, 1817 (Subclass) |
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| Arachnida Acari Acariformes Zakhvatkin, 1952 (Superorder) |
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| Astigmata G. Canestrini, 1891 (Order) |
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| Astigmata Acaridia Latreille, 1802 (Suborder) |
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| Astigmata Acaridia Acaroidea Latreille, 1802 (Superfamily) |
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| Acaridae Latreille, 1802 (Family) |
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| AcaroideaIncertaesedis (Family) |
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| Acotyledonini Zachvatkin, 1941 (Family) |
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| Caloglyphidae Oudemans, 1932 (Family) |
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| Cerophagini Fain & Pauly, 2001 (Family) |
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| Fagacarinae A. Fain & Norton, 1979 (Family) |
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| Forcelliniidae Oudemans, 1927 (Family) |
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| Gaudiellidae Atyeo, Baker & Delfinado, 1974 (Family) |
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| Glycacaridae Griffiths, 1977 (Family) |
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| Horstiinae A. Fain, 1984 (Family) |
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| Lardoglyphidae Oudemans, 1927 (Family) |
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| Lasioacarini A. Fain & Chmielewski, 1987 (Family) |
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| Lemanniellidae Wurst, 2001 (Family) |
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| Myrmolichinae Türk & Türk, 1957 (Family) |
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| Olafseniidae Oudemans, 1927 (Family) |
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| Pinoglyphidae Mahunka, 1979 (Family) |
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| Rhizoglyphidae Oudemans, 1923 (Family) |
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| Sapracaridae A. Fain, 1988 (Family) |
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| Suidasiidae Hughes, 1948 (Family) |
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| Thyreophagini Klimov, 1998 (Family) |
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| Tyrophagidae Oudemans, 1924 (Family) |
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| Astigmata Acaridia Canestrinioidea Berlese, 1884 (Superfamily) |
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| Canestriniidae Berlese, 1884 (Family) |
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| Chetochelacaridae A. Fain, 1987 (Family) |
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| Heterocoptidae A. Fain, 1967 (Family) |
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| Lophonotacaridae A. Fain, 1987 (Family) |
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| Astigmata Acaridia Glycyphagoidea Berlese, 1887 (Superfamily) |
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| Aeroglyphidae Zakhvatkin, 1941 (Family) |
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| Chiroptoglyphinae OConnor & Reisen, 1978 (Family) |
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| Chortoglyphidae Berlese, 1897 (Family) |
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| Echimyopodidae A. Fain, 1967 (Family) |
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| Euglycyphagidae A. Fain & Philips, 1977 (Family) |
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| Glycyphagidae Berlese, 1887 (Family) |
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| Marsupiopinae Fain, 1968 (Family) |
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| Nycteriglyphinae Fain, 1963 (Family) |
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| Nycterilichinae Fain, 1972 (Family) |
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| Pedetropodidae (Family) |
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| Rosensteiniidae Cooreman, 1954 (Family) |
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| Astigmata Acaridia Hemisarcoptoidea Oudemans, 1908 (Superfamily) |
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| Algophagidae Fain, 1975 (Family) |
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| Carpoglyphidae Oudemans, 1923 (Family) |
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| Chaetodactylidae Zakhvatkin, 1941 (Family) |
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| Hemisarcoptidae Oudemans, 1908 (Family) |
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| Hyadesiidae Halbert, 1915 (Family) |
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| Linobiidae Oudemans, 1908 (Family) |
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| Nanacaridae Oudemans, 1923 (Family) |
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| Winterschmidtiidae Oudemans, 1923 (Family) |
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| Astigmata Acaridia Histiostomatoidea Berlese, 1897 (Superfamily) |
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| Anoetidae Oudemans, 1904 (Family) |
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| Fibulanoetinae Fain, Camerik, Lukoschus & Kniest, 1980 (Family) |
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| Guanolichidae Fain, 1968 (Family) |
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| Histiostomatidae Berlese, 1897 (Family) |
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| Myianoetini Scheucher, 1957 (Family) |
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| Nodipalpidae Oudemans, 1923 (Family) |
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| Astigmata Acaridia Hypoderoidea Murray, 1877 (Superfamily) |
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| Colobathriglyphinae A. Fain & M. Nadchatram, 1983 (Family) |
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| Colobathryglyphinae (Family) |
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| Hyperoderidae Murray, 1877 (Family) |
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| Hypodectidae Fain & Bafort, 1966 (Family) |
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| Hypoderatidae (Family) |
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| Hypoderidae Murray, 1877 (Family) |
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| Muridectinae Fain, 1968 (Family) |
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| Astigmata Acaridia Schizoglyphoidea Mahunka, 1978 (Superfamily) |
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| Schizoglyphidae Mahunka, 1978 (Family) |
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| Astigmata Acaridia# Latreille, 1802 (Suborder) |
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| Astigmata AstigmataIncertaesedis (Suborder) |
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| Troglotacaridae Fain, 1977 (Family) |
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| Astigmata Psoroptidia Yunker, 1955 (Suborder) |
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| Astigmata Psoroptidia Analgoidea Trouessart & Mégnin, 1884 (Superfamily) |
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| Alloptidae Gaud, 1957 (Family) |
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| Analgidae Trouessart & Mégnin, 1884 (Family) |
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| Analidae Trouessart & Mégnin, 1884 (Family) |
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| Apionacaridae Gaud & Atyeo, 1977 (Family) |
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| Avenzoariidae Oudemans, 1905 (Family) |
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| Avenzoarinae Oudemans, 1905 (Family) |
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| Cebalginae Fain, 1962 (Family) |
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| Cytoleichidae Canestrini, 1892 (Family) |
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| Dermationidae A. Fain, 1965 (Family) |
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| Dermoglyphidae Mégnin & Trouessart, 1884 (Family) |
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| Epidermoptidae Trouessart, 1892 (Family) |
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| Gaudoglyphidae W.A.Bruce & Johnston, 1976 (Family) |
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| Heteropsoridae (Family) |
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| Knemidocoptidae Dubinin, 1953 (Family) |
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| Knemidokoptidae Dubinin, 1953 (Family) |
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| Kytoditidae Oudemans, 1908 (Family) |
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| Laminosioptidae Vitzthum, 1931 (Family) |
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| Makialginae Fain, 1962 (Family) |
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| Proctophyllodidae Mégnin & Trouessart, 1884 (Family) |
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| Psoralgidae Oudemans, 1908 (Family) |
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| Psoroptoididae Gaud, 1983 (Family) |
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| Pteronyssidae (Family) |
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| Ptyssalgidae Atyeo & Gaud, 1979 (Family) |
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| Pyroglyphidae Cunliffe, 1958 (Family) |
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| Thysanocercidae Atyeo & Peterson, 1972 (Family) |
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| Trouessartiidae Gaud, 1957 (Family) |
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| Turbinoptidae Fain, 1957 (Family) |
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| Xolalgidae Dubinin, 1953 (Family) |
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| Astigmata Psoroptidia Freyanoidea Dubinin, 1953 (Superfamily) |
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| Caudiferidae Caud & Atyeo, 1978 (Family) |
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| Freyanidae Dubinin, 1953 (Family) |
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| Astigmata Psoroptidia PsoroptidiaIncertaesedis (Superfamily) |
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| Astigmata Psoroptidia Psoroptoidea G. Canestrini, 1892 (Superfamily) |
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| Acaroptidae Womersley, 1953 (Family) |
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| Atopomelidae Gunther, 1942 (Family) |
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| Audycoptidae Lavoipierre, 1964 (Family) |
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| Centetesiinae Fain, 1976 (Family) |
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| Cheirogalalginae Fain, 1963 (Family) |
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| Chirodiscidae Trouessart, 1892 (Family) |
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| Chirorhynchobiidae A. Fain, 1967 (Family) |
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| Dermatophagoidinae Fain, 1963 (Family) |
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| Echimytricalginae Fain, 1970 (Family) |
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| Galagalgidae Fain, 1963 (Family) |
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| Gastronyssidae A. Fain, 1956 (Family) |
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| Grammolichinae Fain, 1968 (Family) |
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| Lemurnyssidae Fain, 1957 (Family) |
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| Lemuroeciinae Fain, 1968 (Family) |
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| Listrophoridae Mégnin & Trouessart, 1884 (Family) |
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| Lobalgidae Fain, 1965 (Family) |
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| Marsupialginae Fain, 1963 (Family) |
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| Myocoptidae Gunther, 1942 (Family) |
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| Pneumocoptidae Fain, 1957 (Family) |
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| Psoroptidae G.Canestrini, 1892 (Family) |
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| Rhyncoptidae Lawrence, 1956 (Family) |
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| Rodhainyssinae Fain, 1964 (Family) |
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| Sarcoptidae Murray, 1877 (Family) |
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| Sarcoptidae Mégnin, 1880 (Family) |
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| Yunkeracarinae Fain, 1965 (Family) |
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| Astigmata Psoroptidia Pterolichoidea Trouessart & Mégnin, 1884 (Superfamily) |
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| Ascouracaridae Gaud & Atyeo, 1976 (Family) |
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| Cheylabididae Gaud, 1983 (Family) |
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| Crypturoptidae Gasud, Atyeo & Berla, 1972 (Family) |
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| Crypturoptidae Gaud, Atyeo & Berla, 1972 (Family) |
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| Eustathiidae Oudemans, 1905 (Family) |
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| Faculiferidae (Family) |
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| Falculiferidae Oudemans, 1905 (Family) |
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| Gabuciniidae Gaud & Atyeo, 1975 (Family) |
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| Kiwilichidae Dabert, 1994 (Family) |
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| Kramerellidae Gaud & Mouchet, 1961 (Family) |
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| Ochrolichidae Gaud & Atyeo, 1978 (Family) |
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| Oconnoriidae J. Gaud, W. T. Atyeo & J. S. H. Klompen, 1989 (Family) |
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| Oconnoriiidae J. Gaud, W. T. Atyeo & J. S. H. Klompen, 1989 (Family) |
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| Pterolichidae Trouessart & Mégnin, 1884 (Family) |
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| Pterolichidae Trouessart, 1915 (Family) |
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| Ptiloxenidae J. Gaud, 1982 (Family) |
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| Rectijanuidae Gaud, 1961 (Family) |
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| Syringobiidae Trouessart, 1897 (Family) |
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| Thoracosathesidae Gaud & Mouchet, 1959 (Family) |
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| Vexillariidae Gaud et Mouchet, 1959 (Family) |
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| Astigmata Psoroptidia Pyroglyphoidea Cunliffe, 1958 (Superfamily) |
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