- family: Agelenidae
- family: Araneidae
- family: Clubionidae
- family: Corinnidae
- family: Ctenidae
- family: Cyrtaucheniidae
- family: Dictynidae
- family: Gnaphosidae
- family: Idiopidae
- family: Linyphiidae
- family: Liocranidae
- family: Lycosidae
- family: Mimetidae
- family: Miturgidae
- family: Oonopidae
- family: Oxyopidae
- family: Philodromidae
- family: Pholcidae
- family: Phyxelididae
- family: Pisauridae
- family: Prodidomidae
- family: Salticidae
- family: Selenopidae
- family: Tetragnathidae
- family: Theridiidae
- genus: Argyrodes
- genus: Dipoena
- genus: Episinus
- genus: Latrodectus
- genus: Phoroncidia
- genus: Theridion
- species: Theridion angusticeps Caporiacco, 1949
- species: Theridion brunneonigrum Caporiacco, 1949
- species: Theridion chamberlini Caporiacco, 1949
- species: Theridion charitonowi Caporiacco, 1949
- species: Theridion convexisternum Caporiacco, 1949
- species: Theridion femoratissimum Caporiacco, 1949
- species: Theridion hewitti Caporiacco, 1949
- species: Theridion mauense Caporiacco, 1949
- species: Theridion meneghettii Caporiacco, 1949
- species: Theridion nasinotum Caporiacco, 1949
- species: Theridion nigroplagiatum Caporiacco, 1949
- species: Theridion teutanoides Caporiacco, 1949
- species: Theridion trizonatum Caporiacco, 1949
- species: Theridion zebra Caporiacco, 1949
- genus: Theridula
- family: Thomisidae
- family: Zodariidae