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Atrax christenseni

Atrax christenseni, the Newcastle funnel-web spider or Newcastle big boy, is a species of venomous mygalomorph funnel-web spider in the family Atracidae, native to an area north of Newcastle in Australia.

Description
Atrax christenseni is considered a very large species of funnel-web spider, with adult males exhibiting notable size. This considerable size, combined with its potent venom, has contributed to the species’ reputation for being among the most venomous and dangerous spiders in the world. Despite the species’ high venom potency, no fatalities have been documented, largely due to the availability of an effective antivenom. The antivenom developed for the closely related Sydney funnel-web spider (A. robustus) has been shown to be effective in treating bites from A. christenseni as well. This cross-efficacy is attributed to the biochemical similarity of the venom components among species within the Atrax genus, enabling broader protection through the same medical intervention. ==Taxonomy and naming==
Taxonomy and naming
The species was formally described as a new species in 2025. Previously, it was thought to be a local subspecies of the Sydney funnel-web. The specific epithet christenseni honours Kane Christensen, who contributed specimens that led to A. christenseni's recognition as a distinct species. ==Distribution and habitat==
Distribution and habitat
Atrax christenseni occurs in the area north of Newcastle, New South Wales, Australia, The exact location of the spider populations are not published, due to conservation concerns and its venom. == References ==
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