Asian hornet nests are now being removed in every mainland district
The invasive Asian hornet has now been recorded across all mainland districts, with Braga and Leiria reporting the largest numbers of nests destroyed this year.
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Archived 12 September 2026Do not approach or remove a suspected nest. Portugal's STOPvespa system sends a report to the responsible municipality for assessment and destruction.
- The species reached the Baixo Alentejo and Algarve last year, completing its mainland spread.
- Braga and Leiria have the highest reported nest-destruction totals in 2026.
- Citizens should record a suspected nest through STOPvespa; municipalities are responsible for destruction.
Report the nest, not just an isolated insect
ICNF guidance prioritises the location of nests in areas where the species is established. A clear photograph and precise location help the municipality assess the report.
Do not shake, burn, spray or cut a nest. Disturbance can trigger defensive group behaviour, and a nest high in a tree or building needs trained access.
Treat stings according to symptoms
Move away calmly after a sting, remove rings or tight items near swelling and use normal first-aid measures. People with a known severe allergy should follow their prescribed emergency plan.
Call 112 for breathing difficulty, swelling of the mouth or throat, collapse, severe widespread symptoms or multiple stings. Reporting the nest and obtaining medical help are separate actions.
What you can do now.
- 01
Photograph a suspected nest from a safe distance.
- 02
Submit its exact location through STOPvespa.
- 03
Use 112 for severe sting symptoms, not for routine nest removal.
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