Scientists discover two new species of World's deadliest funnel-web spider

Sydney Funnel Web Spider (Image: Canva)

Scientists have uncovered a fascinating revelation about Australia’s iconic funnel-web spider. New research reveals that what was once thought to be one species, the Sydney funnel-web, is actually three distinct species.

The Sydney funnel-web spider (Atrax robustus), known for its potent venom, has long been a source of caution for Australians. Found primarily along the eastern coastline, this species resides in burrows, preying on small animals. However, genetic analysis has revealed that Atrax robustus is just one of three species.

The newly identified spiders include the Southern Sydney funnel-web (Atrax montanus) and the Newcastle funnel-web (Atrax christenseni). Atrax montanus, first described in 1914 but later grouped with A. robustus, has now been recognised as a separate species. Atrax christenseni, meanwhile, was entirely unknown until now and includes some of the largest funnel-web specimens ever recorded, such as the famously hefty "Big Boy."

The Sydney funnel-web (pictured left) and the Newcastle funnel-web (pictured right). (Image: Kane Christensen)

This discovery could enhance understanding of funnel-web venom, which is highly complex and primarily dangerous to primates and small prey. Although the venom remains the deadliest among spiders, fatalities have been avoided since the introduction of antivenom in 1981.

By distinguishing the species, scientists can study venom variations and improve treatments. The venom also shows potential for use in pesticides and medicines, making its study even more significant.

Funnel-web populations, however, are reportedly declining. Researchers stress the importance of these spiders in their ecosystems and highlight the need for better conservation efforts.

The findings, published in BMC Ecology and Evolution, open new avenues for understanding these venomous arachnids and their critical role in the natural world.