- family: Amaurobiidae
- family: Ammoxenidae
- family: Caponiidae
- family: Cithaeronidae
- family: Drymusidae
- family: Dysderidae
- family: Filistatidae
- family: Gnaphosidae
- family: Hersiliidae
- family: Homalonychidae
- family: Huttoniidae
- family: Lamponidae
- family: Leptonetidae
- family: Liocranidae
- family: Ochyroceratidae
- family: Oecobiidae
- family: Oonopidae
- family: Orsolobidae
- family: Palpimanidae
- family: Periegopidae
- family: Pholcidae
- family: Plectreuridae
- family: Prodidomidae
- family: Scytodidae
- family: Segestriidae
- family: Sicariidae
- genus: Loxosceles
- genus: Sicarius
- species: Sicarius crustosus (Nicolet, 1849)
- species: Sicarius deformis (Nicolet, 1849)
- species: Sicarius fumosus (Nicolet, 1849)
- species: Sicarius gracilis (Keyserling, 1880)
- species: Sicarius hahni (Karsch, 1878)
- species: Sicarius lanuginosus (Nicolet, 1849)
- species: Sicarius minoratus (Nicolet, 1849)
- species: Sicarius peruensis (Keyserling, 1880)
- species: Sicarius rubripes (Nicolet, 1849)
- species: Sicarius terrosus (Nicolet, 1849)
- species: Sicarius utriformis (Butler, 1877)
- family: Stenochilidae
- family: Telemidae
- family: Theridiidae
- family: Thomisidae
- family: Trochanteriidae
- family: Zodariidae