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.

Researchers say they used anatomical and DNA comparisons to study different populations of the Sydney funnel-web spider – one of the world’s deadliest spiders – and found there were three species, only two of which were previously known to science.

Australian scientists have discovered a bigger, more venomous species of the Sydney funnel-web spider, one of the world's deadliest.

A new species of funnel-web spider has been discovered in Newcastle, Australia - even larger and more venomous than common Sydney funnel-web spiders.

A larger, more venomous, longer-fanged species of one of the world’s deadliest spiders has been discovered by scientists in Australia...

A larger and more venomous species of one of the world's deadliest spiders has been confirmed by Australian scientists. Nicknamed 'big boy', it can grow up to 9cm (3.54 inches) compared with 5cm (1.97 inches) for the more common Sydney funnel-web.

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

Not everybody would be thrilled about having a newly discovered, plus-size species of deadly spider named after them—but not everybody is as big a fan of Sydney funnel-web spiders as Kane Christensen.

Australia's reputation for venomous spiders comes partly from the deadly Sydney funnel-web. It turns out there is not just one species, there are three.