[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] Araneida Clerck, 1757 - spiders
           [Suborder] Araneae Clerck, 1757 - tailless spiders
             [Infraorder] Opisthothelae Pocock, 1892 - unsegmented spiders
               Araneomorphae Smith, 1902
                 Synspermiata Michalik & Ramírez, 2014
                   Superfamily Scytodoidea Blackwall, 1864
                     1 Family Sicariidae Keyserling, 1880 [monotypic]
                     2 Family Drymusidae Simon, 1893
                     3 Family Periegopidae Simon, 1893
                     4 Family Ochyroceratidae Fage, 1912
                     5 Family †Aliendiguetidae Wunderlich, 2020 [monotypic]
                     6 Family †Eopsilodercidae Wunderlich, 2008
                     7 Family Scytodidae Blackwall, 1864 [monotypic] - spitting spiders
                     8 Family †Praepholcidae Wunderlich, 2017