When arachnologists visited an old atomic bomb research site in England, they couldn't believe what they found

When arachnologists visited an old atomic bomb research site in England, they couldn't believe what they found

The British Arachnological Society recorded a remarkable 55 species of spiders among the abandoned buildings. But that wasn't all they discovered...

Published: November 13, 2024 at 2:25 pm

Jumping spiders – famous for their agile leaping behaviour – are one of the most populous types of spider, but there are some very uncommon species within the group. This includes Neon pictus, a tiny jumping spider that is extremely rare in the UK.

Excitingly, this species – which is just 3mm in length – has just been found for the first time in Suffolk, England, hanging out in an old military testing site.

On a spit of land next to the North Sea, against a backdrop of abandoned buildings once used for atomic bomb research, surveyors from the British Arachnological Society found an individual Neon pictus spider clinging to the underside of a rock.

The shingle environment at Orford Ness in Suffolk is littered with debris and is home to a variety of 'specialist' spider species
Orford Ness is a shingle spit on the east coast of England/National Trust Images, Justin Minns

Spider survey

The location of the survey was Orford Ness, a military testing site that was bought by the National Trust in the 1990s and has since been managed as a nature reserve. Its vegetated shingle habitat is rare and fragile, and makes the site of international conservation importance.

Richard Gallon, one of the surveyors, said that finding a Neon pictus specimen was a real highlight.

It’s no mean feat that the surveyors managed to find a specimen during their rainy expedition, given that this tiny species are sun-worshippers that often hide away during bad weather. “We were delighted to find this species at Orford,” Richard says, adding that “it extends the known UK range of this nationally rare species into East Anglia.”

The Pagodas at Orford Ness National Nature Reserve, Suffolk
The Orford Ness landscape is home to a number of nationally rare spider species/National Trust Images, Justin Minns

Rare discoveries

Not only did the surveying team find the tiny jumping spider, but also four other spider species that are nationally rare, a further seven that are nationally scarce, and a total of 55 species.

“The presence of so many species, as well as their high numbers, indicates a generally healthy habitat,” Matt Wilson, the National Trust’s Countryside Manager for the Suffolk and Essex Coast, says.

Matt adds that “many species are so small that they were unlikely to have been found by non-experts and their equipment.”

Still, next time you’re out and about, why not keep an eye out for some of our smaller and easily overlooked eight-legged friends? Not only are they indicators of a healthy habitat, but as the photographs show, they’re also quite cute.

Experts think Orford Ness could be home to several thousand nationally rare Gnaphosa lugubris spiders
Experts think Orford Ness could be home to several thousand nationally rare Gnaphosa lugubris spiders/British Arachnological Society, James McGill
The nationally scarce Pseudeuophrys obsoleta
The team found nationally scarce Pseudeuophrys obsoleta spiders at the site/British Arachnological Society, Richard Gallon
The tiny nationally rare Neon pictus spider has never been recorded on Orford Ness before
The tiny nationally rare Neon pictus spider has never been recorded at Orford Ness – until now/British Arachnological Society, Richard Gallon

Main image: a view of the wild and remote landscape through a window at Orford Ness, Suffolk/National Trust Images, Jemma Finch

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