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Guide to surveying oak trees for signs of oak processionary moth (Thaumetopoea processionea) and when to apply control measures
How to identify the OPM parasitoid Carcelia iliaca
Introduction to the manual of advice for people who own or manage oak trees in areas of England affected by oak processionary moth (Thaumetopoea processionea)
Practical considerations of biosecurity and how planting exotic species and increasing movement of seeds can increase the risk of importing and disseminating new pest species (insects and pathogens).
Pheromone traps are a useful method of surveying for the presence of adult male insects, including those of oak processionary moth (OPM). The traps work by containing a lure comprising a synthetic chemical cocktail which mimics the sexual pheromone emitted by the female to attract a mate for breeding. Deploying...
Not present in UK Notifiable – see ’Report a sighting’ below Scientific name – Thaumetopoea pityocampa (T. pityocampa) Pine processionary moth (PPM) larvae, or caterpillars, are a threat to the health of pine (Pinus) and some other conifer tree species, as well as a hazard to human and animal health....
Pest and disease resources and advice from Forest Research
The Holt Laboratory at the Alice Holt site In May 2022, our state-of-the-art containment laboratory for identifying tree pests and diseases and conducting innovative research was officially opened. The £5.8 million Forest Research Holt Laboratory, part of Alice Holt Research Station in Surrey, allows our scientists to identify pests and...
This page provides good practice guidance when working on trees in or close to OPM-affected areas, or when dealing with arisings from work on OPM-infested trees.
Understanding the biology of oak processionary moth (OPM) can help you to manage it. The caterpillars are the larval stage of the insect’s life cycle. OPM gets part of its common and scientific names from the caterpillars’ distinctive habit of moving around in nose-to-tail processions on trees, and sometimes on the ground beneath...
Your first duty as an owner or manager of oak tree or trees in the areas affected by oak processionary moth (OPM) is to protect yourself and others, and pets and livestock, from the health risks which the pest poses. The caterpillars (larvae) develop tiny, irritating hairs from their third...
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