Residents of a riverside village are looking for solutions after a swarm of biting insects.
Keith Ingram, who set up a petition calling for research into the problem, said "summer evenings have been turned into a battleground" in the village of Calstock, Cornwall.
Villager Ellie James added: "Any time the sun goes down they come out. Basically everywhere around here is just full of them. There's no escape."
Calstock Parish Council said it was working with the Environment Agency and UK Health Security Agency to set traps to find out which insect species was causing the bites.
Calstock is on the River Tamar, where a wetland was created by the Environment Agency in 2021 to protect the village from flooding.
Ingram said: "Since the wetlands were introduced, biting insects have exploded."
The Environment Agency said the scheme had been necessary to help the area adapt to "the impacts of sea level rise and climate change while increasing biodiversity".
But Ingram, who also set up a Facebook group called ITCH (Insects Take Calstock Hostage), said villagers believed it had also created a breeding ground for insects.
"It's been getting gradually worse since they completed the wetland," he said.
"It wasn't too bad in the first year but about three or four years ago there was a bike show on the football pitch next to it and people were bitten really badly.
"It's got worse every year since then."
Kerenza Willingale said she had been bitten while sitting on the village's waterside green.
She said: "You can see swarms of them when it's 6pm and sometimes they'll cover someone's leg like a sock.
"You have to brush them off especially if you're on the field, you'll look down and there will be a swarm of them stuck to you.
"Every night it's pretty brutal, especially when it's hot."
James added some people had suffered a nasty reaction after being bitten.
"Some have come up in proper nasty welts and had allergic reactions. The bites swell and they weep," she added.
Kev Kennington said he had suffered several bites on his legs while visiting Calstock this summer.
He said: "I've been bitten dozens of times.
"They seem to hover low around your legs in the evenings and if you're wearing shorts, as we would do in this weather, it's a feast for them."
Calstock Residents Seek Help With Swarms of Biting Insects