Release Date: 04/04/2008
A spring appeal to residents to help prevent the spread of a moth and its caterpillars which are harmful to humans has been issued by Richmond Council.
Oak Processionary Moth larvae have been found on oak trees in the borough over the past two summers.
This month the borough’s trees department is launching a fresh search for the pest. Council officers are working closely with the Forestry Commission and the Royal Botanic Gardens in Kew to locate and destroy the larvae.
While they will be surveying oaks in parks and on the borough’s streets, residents are asked to report any sightings on private land.
They are urged to look out for the distinctive ‘hairy caterpillars’ and their nests which are expected to emerge in late April. The caterpillars feed on leaves and produce silken nests on the trunk or branches of oak trees. They are named after their habit of forming nose-to-tail processions on the trees.
Under no circumstances should people handle, remove or disturb the nests as the hairs contain a toxin which causes allergy-like symptoms.
They can cause skin itching and rashes, conjunctivitis and sore throats, and small numbers of people have symptoms of respiratory problems, similar to asthma.
Cllr Martin Elengorn, Cabinet Member for Environment on Richmond Council, said:
“With the arrival of spring and warmer weather, we are stepping up efforts to control the spread of this pest and working in partnership with the Forestry Commission, the Royal Botanic Gardens and our counterparts in Ealing.
“While there is no cause for alarm, the caterpillars can cause unpleasant symptoms in anyone who comes into contact with their hairs. If left unchecked they can also do considerable damage to oak trees.
“We therefore call on anyone who spots the larvae or nests to report them to the Council immediately. Do not handle them yourself.
“We will also give homeowners advice on removal.”
Sightings of the caterpillars can be reported to the Council by calling 08456 122660.
Anyone who thinks they have been exposed to the caterpillars and have an itchy skin rash, conjunctivitis or other symptoms, should contact their GP or call NHS Direct on 0845 4647.