living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Chelicerata Heymons, 1901
             Class Arachnida Lamarck, 1801
               Order Araneae Clerck, 1757 - spiders
                 Suborder Labidognatha see Infraorder Araneomorphae Smith, 1902
                   Superfamily Scytodoidea Blackwall, 1864
                     Family Tetrablemmidae O. P.-Cambridge, 1873
                       1 Genus Tetrablemma O. P.-Cambridge, 1873
                       2 Genus Monoblemma Gertsch, 1941
                       3 Genus Matta Crosby, 1934
                       4 Genus Ablemma Roewer, 1963
                       5 Genus Brignoliella Shear, 1978