Order Opiliones Sundevall, 1833 - harvestmen Suborder Laniatores Thorell, 1876 - armored harvestmen Infraorder Grassatores Kury, 2002 Superfamily Gonyleptoidea Sundevall, 1833 Family Stygnidae Simon, 1879 1 Subfamily Heterostygninae Roewer, 1913 2 Subfamily Stygninae Simon, 1879