Order Opiliones Sundevall, 1833 - harvestmen Suborder Laniatores Thorell, 1876 - armored harvestmen Infraorder Grassatores Kury, 2002 Superfamily Zalmoxoidea Sørensen, 1886 1 Family Fissiphalliidae Martens, 1988 2 Family Guasiniidae González-Sponga, 1997 3 Family Icaleptidae Kury & Pérez-González, 2002 4 Family Zalmoxidae Sørensen, 1886