"If you are bitten by a funnel-web spider, call an ambulance and go straight to hospital," researcher Geoff Isbister said.

Scientists from Australia and Germany have classified a new, highly venomous species of spider, Atrax christenseni, known as Big Boy. It is very large and highly venomous, with bites that can be fatal.

The deadly 3.54-inch-long spider Atrax christenseni is among the most dangerously venomous spiders for humans.

Australian scientists have discovered a bigger, more venomous species of the Sydney funnel-web spider, one of the world's deadliest. The new funnel-web species has earned the nickname "Big Boy" and was first discovered in the early 2000s near Newcastle,

A new bigger and more dangerous version of the world's deadliest spider, the funnel web, has been identified in the land down under – and it even has longer fangs and more venom