top cx logo
cx logo
Explorearrow down
search icon
Explore
arrow down

Toxic processionary caterpillars in France already

The first very early sighting of poisonous pine processionary caterpillars - which are an irritant and particularly dangerous for dogs - has been reported by a Connexion reader in western France.

The caterpillars - called chenilles processionnaires du pin in French - are toxic. The tiny hairs on their bodies are an irritant, and they can be especially dangerous to children and dogs, who may play with them or eat them accidentally.

A Connexion reader has this week reported sightings of the caterpillars in the town of Bergerac, in the Dordogne (Nouvelle-Aquitaine). This is an especially early appearance; often they do not appear until at least April.

They can be recognised by their white, cotton-wool / candyfloss-like nests in pine or oak trees, and their tendency to move in long “processionary” single-file lines along the ground.

Both the pine and oak varieties of the caterpillar have been reported as spreading further and further north as Europe becomes warmer, and have even been sighted in Belgium and the UK, as well as southern and northern France.

Touching or even getting close to the caterpillars can be dangerous; their hairs can cause severe skin and throat reactions, blisters, conjunctivitis, and even asthma attacks. Pets and young children may be especially sensitive.

The caterpillars can also be damaging to the environment, and can strip bark from trees.

For years, France has been testing methods of caterpillar pest control, including encouraging residents to provide more bird nesting boxes. Councils have also sought to install more of these in common forest areas, as birds such as the great tit, coaltit and great spotted cuckoo are a major caterpillar predator, and can eat hundreds per day.

In 2017, pest control agents even began to use paintball guns to fire pheromones into trees in Nice to dissuade moths - the precursor to the caterpillars - from mating in the first place.

Some councils have installed eco-friendly “belts” around trees, which are designed to catch the caterpillars, and keep them from moving along the ground.

Residents are not encouraged to deal with the caterpillars or try to move them unaided or without adequate protection, as even getting close to them can cause severe reactions.

Stay informed:
Sign up to our free weekly e-newsletter
Subscribe to access all our online articles and receive our printed monthly newspaper The Connexion at your home. News analysis, features and practical help for English-speakers in France

Resident or second-home owner in France?
Benefit from our daily digest of headlines and how-to's to help you make the most of life in France
By joining the newsletter, you agree to our Terms & Conditions and Privacy Policy
See more popular articles
The Connexion Help Guides
featured helpguide
Income Tax in France 2022 (for 2021 income)*
Featured Help Guide
- Primarily aimed at Britons, covers pensions, rent, ISAs, shares, savings and interest - Overview of online declarations + step-by-step guide to the French printed forms - Includes updates given automatically after this year's site opened
Get news, views and information from France
You have 2 free subscriber articles left
Subscribe now to read unlimited articles and exclusive content
Already a subscriber? Log in now