By Shreya Dasgupta The Sydney funnel-web spider, a highly venomous arachnid found crawling in and around Australia’s most populous city, was long thought to be a single species. But it’s actually three different species,

“The Newcastle funnel-web, Atrax christenseni— dubbed Big Boy—is a totally new species. The ‘true’ Sydney Funnel-web, Atrax robustus centres on the North Shore of Sydney and the Central Coast, and the Southern Sydney Funnel-web, Atrax montanus, is a resurrected species name from 1914,” Loria explained.

There are several genera of funnel web spiders, but the most common ones in Australia are Atrax, Hadronyche, and Illawarra. They vary in size and color, usually black or brown, with shiny carapaces. The males are generally smaller and less robust than the females.

An international team of scientists has revised the classification of Australia's most famous spider. With a bite more deadly to humans than that of any other spider, the iconic Sydney funnel-web has long been considered a single species,

Now scientists in Australia have discovered a new funnel-web spider which is even bigger and more venomous. Kane Christensen is behind the discovery and says "its venom glands are a lot larger and its fangs are a lot longer". The new species has been named Atrax christenseni after the man that discovered it.

A new, in-depth study of the spider has discovered that what we thought was one species is actually three. That means there are two new species of the world's most venomous spider, but the discovery is actually good news: it will allow scientists to better characterize and understand the venom each species produces.