Order Opiliones Sundevall, 1833 - harvestmen
   Suborder Cyphophthalmi Simon, 1879 - mite harvestmen
     Infraorder Temperophthalmi Shear, 1980
       Superfamily Sironoidea Simon, 1879
         1 Family Pettalidae Shear, 1980
         2 Family Sironidae Leach, 1816
         3 Family Troglosironidae Shear, 1993