Checklist for Infraclass Megoperculata Börner, 1902 and region California (West USA, USA)
List of families for California 63 Families width 790 Species and 5 Subspecies #ACDFGHLMNOPSTUZ
| Agelenidae C. L. Koch, 1837 | Agelenid Spiders | 24 | Species | Taxom | | Amaurobiidae Thorell, 1870 | Amaurobiids | 27 | Species | Taxom | | Amphinectidae Forster & Wi..., 1973 | Amphinectid spiders | 1 | Species | Taxom | | Anapidae Simon, 1895 | Anapid spiders | 2 | Species | Taxom | | Antrodiaetidae Gertsch, 1940 | Folding trapdoor spider | 13 | Species | Taxom | | Anyphaenidae Bertkau, 1878 | Anyphaenid sac spiders | 6 | Species | Taxom | | Araneidae Simon, 1895 | Golden orb web spiders | 60 | Species | Taxom | | Caponiidae Simon, 1890 | Caponiid spiders | 5 | Species | Taxom | | Charinidae Quintero, 1986 | | 1 | Species | Taxom | | Clubionidae Wagner, 1887 | Clubiones | 2 | Species | Taxom | | Corinnidae Karsch, 1880 | Ant-like Sac Spiders | 21 | Species | Taxom | | Ctenidae Keyserling, 1877 | Tropical wolf spiders | 1 | Species | Taxom | | Ctenizidae Thorell, 1887 | Cork-lid trapdoor spider | 2 | Species | Taxom | | Cybaeidae Banks, 1892 | Pond Water Spiders | 11 | Species | Taxom | | Cyrtaucheniidae Simon, 1892 | Cyrtaucheiid spiders | 12 | Species | Taxom | | Desidae Pocock, 1895 | Desid spiders | 1 | Species | Taxom | | Dictynidae O. P-Cambridge, 1871 | Dictynid spiders | 27 | Species | Taxom | | Diguetidae F. O. Pickar..., 1899 | Coneweb spiders | 1 | Species | Taxom | | Dipluridae Simon, 1889 | Curtainweb Spiders | 1 | Species | Taxom | | Dysderidae C. L. Koch, 1837 | Dysderid spiders | 3 | Species | Taxom | | Filistatidae Ausserer, 1867 | Crevice weaver | 7 | Species | Taxom | | Gnaphosidae Pocock, 1898 | Flat-bellied ground spiders | 95 | Species | Taxom | | Hahniidae Bertkau, 1878 | Dwarf sheet spiders | 8 | Species | Taxom | | Homalonychidae Simon, 1893 | Dusty desert spiders | 1 | Species | Taxom | | Hubbardiidae Cook, 1899 | Hubbardiid shorttailed whipscorpions | 8 | Species | Taxom | | Hypochilidae Marx, 1888 | Lampshade spiders | 4 | Species | Taxom | | Leptonetidae Simon, 1890 | Cave spiders | 9 | Species | Taxom | | Linyphiidae Blackwall, 1859 | Dwarf spiders | 49 | Species | Taxom | | Liocranidae Simon, 1897 | Liocranid sac spiders | 5 | Species | Taxom | | Lycosidae Lehtinen & H..., 1979 | Ground Spiders | 34 | Species | Taxom | | Mecicobothriidae Holmberg, 1882 | Dwarf tarantula | 1 | Species | Taxom | | Mimetidae Simon, 1881 | Pirate spider | 2 | Species | Taxom | | Miturgidae Simon, 1885 | Long-legged sac spiders | 5 | Species | Taxom | | Mysmenidae Petrunkevitch, 1928 | Dwarf cobweb spiders | 1 | Species | Taxom | | Nesticidae Simon, 1894 | Cave cobweb spider | 0 | Species | Taxom | | Oecobiidae Blackwall, 1862 | Disc web spider | 4 | Species | Taxom | | Oonopidae Simon, 1890 | Dwarf Cell Spiders | 11 | Species | Taxom | | Oxyopidae Thorell, 1870 | Lynx spiders | 7 | Species | Taxom | | Philodromidae Thorell, 1870 | False crab spiders | 15 | Species | Taxom | | Pholcidae C. L. Koch, 1851 | Carpenter spider | 14 | Species | Taxom | | Phrynidae Blanchard, 1852 | | 1 | Species | Taxom | | Pimoidae Wunderlich, 1986 | Pimoid spiders | 5 | Species | Taxom | | Pisauridae Simon, 1890 | Big wolf spider | 3 | Species | Taxom | | Plectreuridae Simon, 1893 | Plectreurid spider | 5 | Species | Taxom | | Prokoeneniidae Condé, 1991 | | 1 | Species | Taxom | | Salticidae Blackwall, 1842 | Jumping Spider | 117 | Species | Taxom | | Scytodidae Blackwall, 1864 | Glue spitter | 1 | Species | Taxom | | Segestriidae Simon, 1893 | Six-eyed Spiders | 3 | Species | Taxom | | Sicariidae Keyserling, 1880 | Brown recluse spiders | 7 | Species | Taxom | | Sparassidae Bertkau, 1872 | Giant crab spiders | 5 | Species | Taxom | | Telemidae Fage, 1913 | Long-legged cave spider | 0 | Species | Taxom | | Tengellidae (Dahl, 1908) | Tengellid spiders | 9 | Species | Taxom | | Tetragnathidae Menge, 1866 | Elongated Orb Weavers | 12 | Species | Taxom | | Thelyphonidae Lucas, 1835 | | 1 | Species | Taxom | | Theraphosidae Thorell, 1870 | Bird-eating spiders | 10 | Species | Taxom | | Theridiidae Sundevall, 1833 | Cobweb And Widow Spiders | 46 | Species | Taxom | | Thomisidae Sundevall, 1833 | Crab Spider | 44 | Species | Taxom | | Titanoecidae Lehtinen, 1967 | Rock Weavers | 1 | Species | Taxom | | Trogloraptoridae Griswold, A..., 2012 | | 1 | Species | Taxom | | Uloboridae Thorell, 1869 | Cribellate orb weavers | 2 | Species | Taxom | | Zodariidae Thorell, 1881 | Ant spiders | 2 | Species | Taxom | | Zoridae F. O. P-Camb..., 1893 | Wandering Spiders | 1 | Species | Taxom | | Zoropsidae Bertkau, 1882 | False Huntsman Spiders | 1 | Species | Taxom |
Subnodes of Megoperculata with occurrences in California | Order | Amblypygi Thorell, 1883 Amblypygids, Tail-less whip scorpions, tailless whip scorpions, Tailless Whipscorpions, whip scorpions, whip spider, Whip spiders, Whip-spiders | 2 3 2 | Families Genera Species | Taxom
| | Order | Araneae Clerck, 1757 Spider, Spiders, True Spiders | 67 323 777 | Families Genera Species | Taxom
| | Order | Palpigradi Thorell, 1900 micro-whip scorpions, Microscorpions, microwhip scorpion, Microwhip scorpions, Palpigrades | 1 1 1 | Family Genus Species | Taxom
| | Order | Uropygi O. P-Cambridge, 1872 Uropygids, vinegaroons, whip scorpion, whip scorpions, Whip-scorpions, Whipscorpions, Windscorpions | 2 2 9 | Families Genera Species | Taxom
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