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List of Families found in the Arid Southwest and Associated Mountain Ranges

Mygalomorphae

  1. Antrodiaetidae
  2. Euctenizidae (Cyrtaucheniidae)
  3. Ctenizidae
  4. Mecicobothriidae
  5. Dipluridae
  6. Theraphosidae

Araneomorphae

  1. Hypochilidae
  2. Filistatidae
  3. Sicariidae
    (=Loxoscelidae)  
  4. Scytodidae
  5. Leptonetidae
  6. Pholcidae
  7. Plectreuridae
  8. Diguetidae
  9. Caponiidae
  10. Segestriidae
  11. Dysderidae
  12. Oonopidae
  13. Mimetidae
  14. Oecobiidae
  15. Uloboridae
  16. Nesticidae
  1. Theridiidae
  2. Mysmenidae
  3. Linyphiidae
  4. Tetragnathidae   
  5. Nephilidae
  6. Araneidae
  7. Lycosidae
  8. Trechaleidae
  9. Pisauridae
  10. Oxyopidae
  11. Zorocratidae
  12. Ctenidae
  13. Agelenidae
  14. Hahniidae
  15. Dictynidae
  16. Amaurobiidae
  1. Titanoecidae
  2. Tengellidae
  3. Eutichuridae
  4. Miturgidae
  5. Anyphaenidae
  6. Liocranidae
  7. Phrurolithidae
  8. Clubionidae
  9. Corinnidae
  10. Trachelidae
  11. Zordariidae
  12. Homalonychidae
  13. Prodidomidae
  14. Gnaphosidae
  15. Selenopidae
  16. Sparassidae
    (=Heteropodidae)  
  17. Philodromidae
  18. Thomisidae
  19. Salticidae