Australia’s Massive Funnel-Web Spider Hemsworth Sets New Size Record

The Australian Reptile Park has unveiled Hemsworth, a giant funnel-web spider that claims the title of the largest ever documented. Discovered in Newcastle, roughly 120 kilometers north of Sydney, Hemsworth boasts a remarkable leg span of 9.2 cm (about 3.6 inches), captivating the attention of researchers worldwide given the funnel-web’s reputation as an extremely venomous species.

Hemsworth: Breaking Size Boundaries

CNN reports that the funnel-web spider (Atrax robustus) is well-known in Australia for its swift and dangerous venom. Hemsworth stands apart not only due to his exceptional size but also because of the story behind his naming. When first examined by staff at the Australian Reptile Park, his massive dimensions initially led them to believe he was female, yet further checks confirmed he is male.

At 9.2 cm, Hemsworth surpasses the previous record-holder, Hercules, whose leg span was 7.9 cm. Normally, the typical funnel-web spider grows between 1 and 5 cm, with females generally larger than males. Hemsworth defies these typical characteristics. “Hemsworth’s size is exceptional. He’s the biggest we’ve seen,” commented Emma Teni, keeper of spiders at the park, in a Facebook video.

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The Inspiration Behind Hemsworth’s Name

Hemsworth is named in tribute to Australia’s famous acting trio: Chris, Liam, and Luke Hemsworth. The spider’s commanding size drew comparisons to the Hemsworth brothers’ towering physiques. According to Emma Teni, “His impressive stature reminded me of the Hemsworths and their standout height among others.” Thus, the name symbolizes the spider’s dominant status among funnel-webs.

‘Hemsworth-the-male-funnel-web-spider-Atrax-robustus-aa85c0845bfd86af533123ea29672350.webp — Credit: Australian Reptile Park

Hemsworth’s Vital Role in Antivenom Development

Part of Hemsworth’s significance lies in his contribution to creating antivenom. The venom from male funnel-web spiders is especially potent—about six times stronger than that from females. This potency makes Hemsworth extremely valuable.

Australian Reptile Park can harvest venom from males like Hemsworth, which contains atracotoxin, the crucial component for antivenom manufacture, explained the spider keeper.

These spiders’ lethal venom accounted for the deaths of 13 individuals prior to the introduction of antivenom in 1981. Since then, no deaths from funnel-web bites have been recorded thanks to life-saving treatments derived from the venom.

Community Involvement in Preserving Funnel-Web Spiders

As funnel-webs enter breeding season, the Australian Reptile Park urges locals to report sightings with caution. Community members are encouraged to safely collect spiders and their egg sacs to help sustain antivenom production efforts.

With populations rising around Sydney, this cooperative approach plays a key role in ensuring continued antivenom availability and reducing fatal encounters.

Hemsworth Isn’t Australia’s Largest Spider Overall

While extraordinary, Hemsworth isn’t Australia’s biggest spider species. That distinction goes to the whistling spider, a tarantula known for its unique hissing sound when threatened. These spiders can have a body length of up to 6 cm (around 2.36 inches) but stretch their legs out to an impressive 16 cm (about 6.3 inches).

Though funnel-webs are renowned for their toxic venom, the whistling spider holds the record for the largest physical size among Australian spiders.