Warning after dangerous caterpillars found in Hampshire
People should avoid the pest
Last updated 4th Aug 2022
There is a warning to people after a dangerous type of caterpillar has been found in a small area of Hampshire.
The Oak Processionary Moth and their nests contain hairs which can cause itchy rashes, eye and throat irritations, and should not be touched under any circumstances at any time.
They also feed on the leaves of several species of oak trees, this can cause the trees to lose their leaves, negatively impacting their growth, and making them more vulnerable to other stresses, like drought.
The Forestry Commission say "rapid and robust action" is being taken to investigate and address these findings, including targeted surveys and control measures to reduce pest prevalence and minimise its spread.
They haven't specified where the sighting has been made.
Andrew Hoppit, Oak Processionary Moth Project Manager, said:
“Oak Processionary Moth nests are typically dome or teardrop-shaped, averaging the size of a tennis ball. They are white when fresh, but soon become discoloured and brown. The caterpillars have black heads and bodies covered in long white hairs. Neither should be touched under any circumstances.
“Rapid plant health enforcement action is being taken to investigate and control these isolated findings in Hampshire. Any sightings should be reported to the Forestry Commission via our TreeAlert portal, by emailing opm@forestrycommission.gov.uk or calling 0300 067 4442. Doing so will help to protect people, minimise the pest’s spread and help to ensure our precious oak trees remain a much-loved feature of the landscape.”
Landowners, the public, and trade are urged to remain vigilant for the pest and report any sightings.
A Government programme to manage OPM has been in place since 2012 to control its spread.
Over the last five years, £10 million has been invested into oak health, including the management of OPM, as well as research to develop novel control techniques.