The Atrax christenseni, a large spider with potent venom, was identified after years of research. Its discovery represents a milestone in the study of Australian arachnids.
Australian scientists announced the discovery of a new species of funnel-web spider, known as Atrax christenseni. This arachnid, nicknamed “Big Boy” for its size, is one of the largest and most deadly spiders in its family, which already had 38 known species.
A significant discovery near Sydney
The discovery took place near Newcastle, north of Sydney, in the early 2000s, when Kane Christensen, an expert in arachnids, observed a significantly larger and more dangerous spider than the common ones in the region.
After years of genetic analysis and morphological studies, scientists confirmed that it is a distinct species, which shared an ancestor with the funnel-web spiders from Sydney about 17 million years ago.
Characteristics of Australia’s most venomous spider and its impact on research
The Atrax christenseni can reach up to 9 centimeters in length, almost double that of other similar species. It also has thicker legs and longer fangs. Its venom, composed of potent peptides known as delta-atracotoxins, can cause serious respiratory and circulatory complications in humans. Fortunately, the antivenom developed in the 1980s is also effective against this species.
Scientists emphasize that this nocturnal and rare arachnid is more active between November and April, when males go out in search of a mate. However, to protect the species, authorities decided not to disclose the exact locations where it inhabits, prioritizing its conservation.
Christensen, in whose honor the spider was named, expressed his pride in the discovery and his legacy in venom extraction for the production of antidotes, which has been crucial to prevent human deaths since the introduction of the antivenom in 1981.
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