The Sydney funnel-web spider has extremely dangerous venom, but according to a new study this spider is actually three different species — one of which, the "Newcastle big boy," is much larger.

“The Newcastle funnel-web, Atrax christenseni – ‘Big Boy’ – is a totally new species. The ‘true’ Sydney funnel-web, Atrax robustus, centres on the North Shore of Sydney and the ...