Order Opiliones Sundevall, 1833 - harvestmen Suborder Eupnoi Hansen & Sørensen, 1904 - daddy longlegs Superfamily Phalangioidea Latreille, 1802 Family Sclerosomatidae Simon, 1879 Subfamily Gagrellinae Thorell, 1889 Genus Argyraster Nakatsudi, 1942