Most Venomous Spiders

Most spiders possess venom, and several hunt by using their fangs to inject venom into their prey. This venom can paralyze and kill smaller animals than humans. Most are too small or not aggressive enough to attempt it, bites occurring because a spider is trapped or unintentionally contacted. However, certain spiders possess venom so potent a single bite can kill a person.

Common Spider: Wandering Spiders

Big Spiders: Fringed Ornamental Spider, Sydney Funnel-web Spider

Sicariidae

• Brown Recluse Spider (Loxosceles reclusa)
• Six-eyed Sand Spider (Hexophthalma hahni)
• Chilean Recluse Spider (Loxosceles laeta)

Wandering Spiders

• Phoneutria fera
• Phoneutria nigriventer

Sac Spiders

• Yellow Sac Spider (Cheiracanthium inclusum)

Comb-footed Spiders

• Black Widow Spider (Latrodectus mactans)
• Brown Widow Spider (Latrodectus geometricus)
• Red Widow Spider (Latrodectus bishopi)
• Redback Spider (Latrodectus hasselti)
• White Widow Spider (Latrodectus pallidus)

Funnel-web Spiders

• Sydney Funnel-web Spider (Atrax robustus)
• Northern Tree-dwelling Funnel-web Spider (Hadronyche formidabilis)

Tarantulas

• Fringed Ornamental Spider (Poecilotheria ornata)

Funnel Weaver Spiders

• Hobo Spider (Tegenaria agrestis)