A spider in disguise puts the travel habits of wildlife in the spotlight
Wendy the wasp spider has turned up in a new neighborhood in northern England. Northeastern experts explain what sends animals packing, how climate change factors in and why newcomers don’t always get a warm welcome.
A spider masquerading as a wasp has been turning heads at Chester Zoo in Cheshire, England.
Nicknamed Wendy by the zoo team, the Argiope bruennichi, commonly known as the wasp spider, is a dead ringer for a yellowjacket — until you see the eight legs with stripes to match and realize that Wendy is all the buzz — but has no sting.
The disguise serves as protection. At 2 cm, she’s one of England’s largest spiders, but to predators that’s barely an appetizer.
Seeing the wasp stripes, most don’t risk calling its bluff.
And no, Wendy didn’t break out of a spider exhibit. In fact, she’s not supposed to be anywhere near Chester Zoo at all.
The quirky arachnid is common in southern England, mainland Europe, north Africa and Asia. It has been inching north for decades, but the sighting in Cheshire, a county of North West England is the first on record, according to Chester Zoo conservationists.
“The spider looks fearsome to non-biologists but they aren’t dangerous in any way,” said spider recorder Edward Milner, who submits sightings to the London Natural History Society.
However, females are known to scarf down their mates after doing the deed.
It might be a buzzkill, but a girl needs her protein — especially with babies on the way.
Wendy’s story brings up broader questions.
Where do new species come from, how do they get there, and what prompts the migration?
According to Northeastern marine and environmental studies professor David Kimbro, organisms on the move fall into two basic camps.
Native species spread organically as new areas become suitable and are “simply increasing their spatial footprint within their established range,” Kimbro said.
Non-natives are shipped in or hitch a ride by latching on to luggage, mail or vehicles.
Kimbro and other experts, including his departmental colleagues Katie Lotterhos and Brian Helmuth explore the wider consequences of wildlife relocation, with Wendy’s story as a starting point.
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Some species expand their horizons as new areas become more inviting.
Spiders glide through the air on strands of silk — a process called ballooning — and hitch rides on travelers or goods. They often end up in odd places, Matt Prince, a member of the British Arachnological Society, explained.
However, scientists don’t think Wendy’s appearance in Cheshire is a fluke.
Chester Zoo initially pegged her as a climate refugee displaced by global warming. But experts now think the arachnid is expanding its natural range. The wasp spider most likely colonized southern UK by ballooning from the European continent, Prince explained. The first recorded sighting dates back to Rye in Sussex in 1922. Now it’s continuing to push the boundary further north, with Wendy as one of the mavericks.
However, not everyone agrees about what’s driving the expansion at this particular time.
According to Milner, wasp spiders are trailing their favorite snack — grasshoppers.
Changing policies allowed longer grass to grow in northern parks and tree lawns, which helped grasshoppers thrive. A warmer climate amplified the effect by giving insects an extra boost.
The spiders simply followed the food, Milner suggested.
However, rising temperatures might be playing a more direct role by making areas that used to be too cold for the arachnid more inviting.
“This species loves hot grassland, and the recent warmer weather suits it well,” Prince said.
Climate-driven habitat expansion is redrawing the map for many organisms, Chester Zoo head of field programs Scott Wilson told Northeastern Global News.
“Our giant pangolin project has confirmed new ranges for this species and discovered a range extension for a type of mongoose,” he said.
The wasp spider’s continued success in its original home base in southern England and in other parts of the world serves as evidence it’s exploring new opportunities rather than fleeing climate-related pressures. Total population numbers are unknown.
For those that can’t take the heat, moving is a matter of survival.
Had Wendy been a climate refugee, she wouldn’t have been the first. Many species have been forced out of their homes in recent decades.
It’s not a simple “move towards the poles,” however, Helmuth noted. Migration patterns involve many moving parts as some species flee from the heat and others replace them.
Unfortunately, making it out of one danger zone doesn’t guarantee success.
A 2019 drought in South Africa displaced adult flamingos, leaving over 1,800 chicks behind. In Australia, displaced grey-headed flying foxes settled in Adelaide’s Botanic Park, only to get hit by a deadly heat wave years later.
Uninvited guests from afar leave the locals in a tight spot.
When a species turns up far from its original habitat, it’s often the case that people had an unwitting hand in getting them there. They’re called invasive if they multiply quickly and wreak havoc on their new home.
“The most successful (ones) typically have physiological traits that make them very tolerant of stress,” Kimbro explained.
The National Invasive Species Information Center lists a number of pathways through which the stowaways sneak into new neighborhoods.
Zebra mussel clams stick to boats and Jet Skis, tree-eating beetles hide in firewood, while Cuban treefrogs get swept in with storms.
Some — including certain spiders — tag along with luggage or packages as well, Prince said.
Case in point: the European hobo spider made it across the Atlantic to North America, where it’s considered invasive.
While there are exceptions, the spread of invasive species can have devastating consequences, Helmuth explained. A predator may find easy pickings among animals that haven’t evolved defenses against it.
Others are resistant to diseases that locals are vulnerable to, Lotterhos added.
Non-invaders quickly wear out their welcome, too
More often than not, even natural expansion into new territory spells trouble.
In 2025, octopuses from northern France raided lobster pots in the English coastal regions of Devon and Cornwall, leaving empty shells and claws in their wake.
A decade ago, southern pine beetles spreading north made short work of countless Long Island trees.
Perhaps all the talk about Wendy being harmless should be taken with a grain of salt, Helmuth suggested.
Could Wendy have more up her sleeve?
“Time will tell,” he said.
