All families
104 families:
Araneae
Agelenidae C. L. Koch, 1837
valid, Funnelweb spiders (251 species)
Amaurobiidae Thorell, 1870
valid, Laceweb spiders (43 species)
Anyphaenidae Bertkau, 1878
valid, Buzzing spiders (6 species)
Araneidae Clerck, 1757
valid, Orbweb spiders (149 species)
Atypidae Thorell, 1870
valid, Purseweb spiders (4 species)
Clubionidae Wagner, 1887
valid, Sac spiders (54 species)
Corinnidae Karsch, 1880
valid, Ant-like sac spiders (6 species)
Ctenidae Keyserling, 1877
valid (4 species)
Cybaeidae Banks, 1892
valid, Soft spiders (26 species)
Desidae Pocock, 1895
valid (1 species)
Dictynidae O. Pickard-Cambridge, 1871
valid, Meshweb spiders (74 species)
Dysderidae O. Pickard-Cambridge, 1871
valid, Woodlouse spiders (430 species)
Eresidae C. L. Koch, 1850
valid, Velvet spiders (35 species)
Gnaphosidae Pocock, 1898
valid, Ground spiders (616 species)
Hahniidae Bertkau, 1878
valid, Lesser cobweb spiders (31 species)
Linyphiidae Blackwall, 1859
valid, Money spiders (1,453 species)
Liocranidae Simon, 1897
valid, Running foliage spiders (65 species)
Lycosidae Sundevall, 1833
valid, Wolf spiders (397 species)
Mimetidae Simon, 1881
valid, Pirate spiders (11 species)
Mysmenidae Petrunkevitch, 1928
valid, Dwarf cobweb spiders (4 species)
Nesticidae Simon, 1894
valid, Comb-footed cellar spiders (58 species)
Oecobiidae Blackwall, 1862
valid, Discweb spiders (16 species)
Oonopidae Simon, 1890
valid, Goblin spiders (52 species)
Oxyopidae Thorell, 1870
valid, Lynx spiders (18 species)
Philodromidae Thorell, 1870
valid, Running crab spiders (121 species)
Pholcidae C. L. Koch, 1850
valid, Cellar spiders (65 species)
Pimoidae Wunderlich, 1986
valid (4 species)
Pisauridae Simon, 1890
valid, Nurseryweb spiders (9 species)
Salticidae Blackwall, 1841
valid, Jumping spiders (490 species)
Scytodidae Blackwall, 1864
valid, Spitting spiders (12 species)
Segestriidae Simon, 1893
valid, Tubeweb spiders (18 species)
Sparassidae Bertkau, 1872
valid, Huntsman spiders (39 species)
Tetragnathidae Menge, 1866
valid, Long-jawed orbweb spiders (39 species)
Theridiidae Sundevall, 1833
valid, Comb-footed spiders (268 species)
Thomisidae Sundevall, 1833
valid, Crab spiders (225 species)
Uloboridae Thorell, 1869
valid, Cribellate orbweb spiders (10 species)
Zodariidae Thorell, 1881
valid, Ant-hunting spiders (168 species)
Zoropsidae Bertkau, 1882
valid, False wolf spiders (10 species)
Opiliones
Travuniidae Absolon & Kratochvíl, 1932
valid (16 species)
Pseudoscorpiones
Larcidae Harvey M. S., 1992
valid (6 species)
Amblypygi
Solifugae
Scorpiones
Buthidae C. L. Koch, 1837
valid (19 species)
Iuridae Thorell, 1876
valid (12 species)
Palpigradi
Schizomida