A small number of oak processionary moth nests have been identified in Richmond Park and the Royal Parks advise us that they are taking appropriate action to help eradicate the moth.  Mike Turner, Arboricultural Manager at The Royal Parks said:

“We’ve carried out very careful monitoring in the Park for signs of oak processionary moth for over two years and have been working closely with our partners regarding local outbreaks.   By removing the nests we hope to contain the moth population by destroying the caterpillars before they reach adulthood, therefore reducing the pest across London.” 

Nests (Pictured left) will be removed at the end of June and beginning of July, when the caterpillars have retreated into their nests to pupate.  Nest removal will be carried out by specially trained and equipped operators.

The moth (Thaumetopoea processionea) is a forestry pest as it strips oak trees’ leaves, and is a health hazard because the caterpillars shed toxic hairs.  The oak processionary moth, a native of mainland Europe, has appeared in London and is breeding on oak trees in Ealing and Richmond. Its caterpillars feed on oak leaves and produce silken nests on the trunks and branches of affected trees.

As well as seriously damaging trees, the caterpillars pose a risk to human and animal health. The tiny hairs from the caterpillar can be blown on the wind and lead to itching skin lesions and, less commonly, sore throats and eye problems.

You are advised not to touch the caterpillar or a nest, even an empty nest. If you think you may have been exposed and have an itching skin rash and/or conjunctivitis or other symptoms, contact your GP, or call NHS Direct on 0845 4647.