Atrax

Atrax spiders are special Australian funnel-web spiders. As of May 2019, there are only three types of them. These spiders have an interesting history; they were once part of the Curtain web spider family and then moved to the funnel-web family in 1980.

Scientific Classification

• Family: Atracidae
• Genus: Atrax

Spiders Belonging to this Genus

Physical Description and Identification

Adults

• Size: They have an average size of 0.59 – 1.77 inches (1.5 – 4.5 cm)
• Color: They mostly have a brownish body. Like, the Sydney funnel-web spider (Atrax robustus) appears bluish-black or brown. On the other hand, Atrax sutherlandi is dark brown or plum.
• Other Characteristic Features: Most of them are hairless, with a smooth, and glossy appearance.

Eggs

A single sac contains about 100 eggs, that are pale yellow or yellowish-green.

Spiderlings

Spiderlings leave the eggs shortly after the hatching.

The Web

They make funnel-shaped webs and wait inside to capture their prey.

Are Atrax Spiders Venomous?

Yes, Atrax spiders are venomous. They’re known for having one of the more potent venoms among spiders, especially to humans. The Sydney funnel-web spider, belonging to this genus is considered one of the world’s deadliest spiders, whose bite can result in severe illness, or even fatality if not treated instantly.

Can Atrax Spiders Bite?

Atrax spiders can bite, especially if they feel threatened. Their bite can be painful and might cause some discomfort, so it’s best to be cautious around them.

Quick Facts

Distribution	Australia
Habitat	Forests and urban areas
Diet	Insects
Web Type	Funnel-shaped
Lifespan	4-20 years

Did You Know

• English zoologist, Octavius Pickard-Cambridge, first described the species in 1877.

Image Credit: destepti.ro