Oak Processionary Moth identified in Derbyshire

Inspectors have confirmed a number of oak trees in the Long Eaton area of Derbyshire are infested with Oak Processionary Moth (OPM).

Since this outbreak in Derbyshire is outside of OPM’s established area, the intention is to implement a management programme to eradicate the pest from this area.

At the same time, surveillance work is ongoing to investigate and direct control measures to prevent the further spread of the pest; the surrounding area will be monitored through a programme of ground surveys and pheromone trapping.

Defra is urging members of the public in Long Eaton and surrounding areas across Nottinghamshire and Derbyshire to be vigilant and check for signs of their own oak trees being infested, including those recently planted.

The Association urge members working in this area to exercise caution and to report any sightings via the TreeAlert portal, email or telephone 0300 067 4442.

Identification of Oak Processionary Moth caterpillars:

• Black head, grey body (with a dark stripe running down the centre) and long, white hairs
• 2cm long when fully grown
• Usually move nose-to-tail in a procession

Identification of Oak Processionary Moth nests: 

• Range in size from golf ball to rugby ball-sized and may be found anywhere on the tree
• Unlikely to be found on any tree or shrub species other than oak
• White-coloured when fresh but soon become discoloured and brown
• Nests stay attached to the tree for many months

Please see Forestry Commission infographic for images of the caterpillar and nest.

Following possible OPM contact, visit a pharmacist for relief from milder skin or eye irritations. Consult a GP or call NHS111 for more serious reactions. Contact a vet if animals are seriously affected.