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

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.

A new type of spider, nicknamed the ‘big boy’, has officially been discovered in Australia- and immediately became one of the deadliest arachnids in the world. The Sydney funnel-back spider has held the title of world’s most venomous spider for many years, and has been responsible for at least 13 recorded deaths.

A bigger and more dangerous version of the world's deadliest spider has been discovered by boffins in Australia. The Newcastle funnel-web spider was named after the port city, 100 miles north of Sydney,

The first person to discover the Aussie spider, Kane Christensen, has warned people not to approach it, citing its massive fangs and glands that produce 'copious amounts of venom'

Scientists in Australia have discovered a spider that they've unironically nicknamed "Big Boy." This arachnid is a larger, more venomous version of the Sydney funnel web, known to be one of the world's deadliest spiders.

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.

“Big boy” funnel-web was initially discovered in the early 2000s, but has now been officially confirmed by Australian scientists. The new huge variation was named Atrax christenseni in honour of the discovery of the creature in Newcastle - which is over 100 miles from Sydney.

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