[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
                   Lost Trachea Clade
                     Family Pholcidae Koch, 1850
                       1 Genus Coryssocnemis Simon, 1893
                       2 Genus Leptopholcus Simon, 1893
                       3 Genus Metagonia Simon, 1893
                       4 Genus Modisimus Simon, 1893
                       5 Genus †Paraspermophora Wunderlich, 2004
                       6 Genus Pholcophora Banks, 1896
                       7 Genus Quamtana Huber, 2003
                       8 Genus †Serratochorus Wunderlich, 1988