Names matching 'atra'
- family: Amaurobiidae
- family: Araneidae
- family: Atypidae
- family: Barychelidae
- family: Corinnidae
- family: Cyrtaucheniidae
- family: Dysderidae
- family: Gnaphosidae
- family: Hersiliidae
- family: Hexathelidae
- genus: Atrax O. P.-Cambridge, 1877
- genus: Hadronyche
- species: Hadronyche adelaidensis (Gray, 1984)
- species: Hadronyche eyrei (Gray, 1984)
- species: Hadronyche flindersi (Gray, 1984)
- species: Hadronyche formidabilis (Rainbow, 1914)
- species: Hadronyche infensa (Hickman, 1964)
- species: Hadronyche modesta (Simon, 1891)
- species: Hadronyche pulvinator (Hickman, 1927)
- species: Hadronyche valida (Rainbow & Pulleine, 1918)
- species: Hadronyche venenata (Hickman, 1927)
- species: Hadronyche versuta (Rainbow, 1914)
- family: Linyphiidae
- family: Liphistiidae
- family: Lycosidae
- family: Nemesiidae
- family: Philodromidae
- family: Pholcidae
- family: Pisauridae
- family: Psechridae
- family: Salticidae
- family: Sparassidae
- family: Tetragnathidae
- family: Theraphosidae
- family: Theridiidae
- family: Thomisidae
- family: Uloboridae