Having problems with asian hornets?

As of 25th July 2025, there have been 73 confirmed sightings of the yellow-legged hornet across England, with 28 nests discovered and dealt with. These figures highlight the growing presence of this invasive species, which poses a significant threat to native pollinators and ecosystems. Vigilance and early reporting remain essential.

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Asian Hornet Identification and Control | Shire Pest Solutions

Asian Hornet Identification and Control

The Asian hornet (Vespa velutina), also known as the yellow-legged hornet or Asian predatory wasp, is an invasive species that originated in East Asia. It is not native to the UK and did not arrive through natural migration. Despite this, people have recorded confirmed sightings in parts of the UK.

Why Asian Hornets Are a Concern

The primary concern with Asian hornets is their predation on bees and other pollinators. In France, this species has heavily preyed on European honey bees, solitary bees, and other native insect populations. Nature conservation groups such as the RSPB are particularly alarmed, as pollinators are vital to maintaining healthy ecosystems and biodiversity.

How to Identify an Asian Hornet

Colouration: Dark brown or black thorax with a largely dark abdomen, but with a striking orange or yellow fourth abdominal segment.
Legs: Bright yellow leg tips — a key feature distinguishing them from European hornets, which have brown legs.
Size: Slightly larger than a common wasp (20–24mm), but smaller than a European hornet (25–35mm for queens).

Asian Hornet Nesting Behaviour

These invasive wasps build large, egg-shaped paper nests in trees, buildings, or other sheltered areas. A single colony may house as many as 6,000 workers. Nests are highly defended and can become dangerous if disturbed, posing a risk to people and animals nearby.

Risks to the Environment

Pollinator Decline: Targeted predation on bees can reduce pollination and crop yields.
Biodiversity Impact: As aggressive competitors, Asian hornets can outcompete and displace native species.
Ecological Disruption: Large populations may upset the balance of local ecosystems.

Prevention and Reporting

Avoidance: Do not leave sugary food or drink outdoors, and tightly seal bins to avoid attracting hornets.
Home Protection: Fit fine mesh screens to windows and doors to prevent hornet entry.
Reporting Sightings: Use the ‘Asian Hornet Watch’ app to record sightings, or email photos/videos to alertnonnative@ceh.ac.uk.
Do Not Disturb Nests: Asian hornet nests can be dangerous — never attempt removal yourself. Always contact a professional pest control service.

Asian Hornet Control FAQ

What is an Asian Hornet and why is it a concern in the UK?

The Asian Hornet (Vespa velutina), also known as the yellow-legged hornet, is an invasive species originally from East Asia. It poses a serious threat to native pollinators, especially honey bees, which are essential for healthy ecosystems and food production.

How can I tell the difference between an Asian Hornet and a European Hornet?

Asian Hornets have a dark brown or black body with an orange band on the fourth segment of the abdomen and distinctive yellow tips on their legs. In contrast, European Hornets are larger with thick yellow stripes and reddish-brown thoraxes.

Are Asian Hornets dangerous to humans?

While Asian Hornets are generally not aggressive towards humans, they will defend their nests if disturbed and can sting multiple times. Their sting can be painful and, in rare cases, cause allergic reactions.

What should I do if I see an Asian Hornet or its nest?

Do not attempt to approach or remove the nest yourself. Report sightings using the ‘Asian Hornet Watch’ app or send photos/videos to alertnonnative@ceh.ac.uk. Contact professional pest control services for safe removal.

Where do Asian Hornets typically build their nests?

They often build large, egg-shaped paper nests high in trees, under roofs, or in sheltered outdoor areas. Occasionally, nests can also be found in sheds, garages, or loft spaces.

How can I prevent attracting Asian Hornets to my property?

Avoid leaving sugary foods or drinks uncovered outdoors, seal rubbish bins tightly, and consider fitting fine mesh screens on doors and windows to prevent hornets from entering buildings.

Do Asian Hornets carry or transmit diseases?

Asian Hornets are not known to transmit diseases to humans in the way some pests do. However, their threat lies in their impact on biodiversity—particularly through the destruction of bee populations. Unlike flies or rodents, they are not considered vectors of human pathogens, but their presence can disrupt local ecosystems and food chains significantly.

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