- family: Agelenidae
- family: Araneidae
- genus: Aculepeira Chamberlin & Ivie, 1942
- genus: Araneus
- genus: Araniella Chamberlin & Ivie, 1942
- genus: Metepeira
- species: Metepeira arizonica Chamberlin & Ivie, 1942
- species: Metepeira compsa (Chamberlin, 1916)
- species: Metepeira crassipes Chamberlin & Ivie, 1942
- species: Metepeira datona Chamberlin & Ivie, 1942
- species: Metepeira foxi Gertsch & Ivie, 1936
- species: Metepeira glomerabilis (Keyserling, 1892)
- species: Metepeira grandiosa Chamberlin & Ivie, 1941
- species: Metepeira labyrinthea (Hentz, 1847)
- species: Metepeira lima Chamberlin & Ivie, 1942
- species: Metepeira minima Gertsch, 1936
- species: Metepeira nigriventris (Taczanowski, 1878)
- species: Metepeira palustris Chamberlin & Ivie, 1942
- species: Metepeira spinipes Cambridge, 1903
- species: Metepeira ventura Chamberlin & Ivie, 1942
- genus: Neoscona
- family: Cybaeidae
- family: Dictynidae
- family: Filistatidae
- family: Hahniidae
- family: Leptonetidae
- family: Linyphiidae
- genus: Linyphantes Chamberlin & Ivie, 1942
- species: Linyphantes aeronauticus (Petrunkevitch, 1929)
- species: Linyphantes aliso Chamberlin & Ivie, 1942
- species: Linyphantes anacortes Chamberlin & Ivie, 1942
- species: Linyphantes delmarus Chamberlin & Ivie, 1942
- species: Linyphantes distinctus Chamberlin & Ivie, 1942
- species: Linyphantes eureka Chamberlin & Ivie, 1942
- species: Linyphantes laguna Chamberlin & Ivie, 1942
- species: Linyphantes microps Chamberlin & Ivie, 1942
- species: Linyphantes natches Chamberlin & Ivie, 1942
- species: Linyphantes nehalem Chamberlin & Ivie, 1942
- species: Linyphantes nigrescens Chamberlin & Ivie, 1942
- species: Linyphantes obscurus Chamberlin & Ivie, 1942
- species: Linyphantes orcinus (Emerton, 1917)
- species: Linyphantes pacificus Chamberlin & Ivie, 1942
- species: Linyphantes pualla Chamberlin & Ivie, 1942
- species: Linyphantes santinez Chamberlin & Ivie, 1942
- species: Linyphantes santinez verdugo Chamberlin & Ivie, 1942
- species: Linyphantes victoria Chamberlin & Ivie, 1942
- genus: Pityohyphantes
- family: Lycosidae
- family: Oecobiidae
- family: Oonopidae
- family: Philodromidae
- family: Pholcidae
- family: Sicariidae
- family: Telemidae
- family: Tetragnathidae
- family: Theridiidae
- family: Thomisidae