Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Arachnida Lamarck, 1801
         Order Opiliones Sundevall, 1833 - harvestmen
           Suborder Cyphophthalmi Simon, 1879 - mite harvestmen
             1 Family Neogoveidae Shear, 1980
             2 Family Ogoveidae Shear, 1980
             3 Family Pettalidae Shear, 1980
             4 Family Sironidae Leach, 1816 [paraphyletic?]
             5 Family Stylocellidae Hansen & Sørensen, 1904
             6 Family Troglosironidae Shear, 1993