Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Cheliceriformes Class Chelicerata Heymons, 1901 Subclass Arachnida Lamarck see Class Arachnida Lamarck, 1801 Order Acari Leach, 1817 - mites, ticks and chiggers see Subclass Acari Leach, 1817 Suborder Opilioacariformes - primitive mites see Superorder Opilioacariformes 1 Family Opiliocaridae see Family Opilioacaridae With, 1902