Asian Hornet

Asian Hornet

Vespa velutina

Asian Hornet

Vespa velutina, sometimes known as the 'Asian hornet' (or more recently, and increasingly, as the the Yellow Legged hornet) is an invasive non-native species from Asia. It has recently arrived in France where it is spreading rapidly. As a highly effective predator of insects, including honey bees and other beneficial species, it can cause significant losses to bee colonies, other native species and potentially ecosystems.



On 3 July 2019, the first UK sighting of an Asian hornet of the year was confirmed in New Milton, Hampshire. It was spotted by a member of the public and reported via the Asian Hornet Watch App. This was the first confirmed sighting since October 2018. Details of all AH sightings can be found on this page on GOV.UK


The BBKA also now has an Asian Hornet Incursion map, displaying sightings by year, which you can go to by clicking here.



It is expected that the places it is most likely to be found in numbers are in southern parts of England (it may be able to cross the channel from France) or in goods among which it could be accidentally imported (such as soil with imported pot plants, cut flowers, fruit and timber). Active between April and November (peak August/September).

What to look out for:

  • Vespa velutina queens are up to 3 cm in length; workers up to 25 mm (slightly smaller than the native European hornet Vespa crabro)
  • Entirely dark brown or black velvety body, bordered with a fine yellow band
  • Only one band on the abdomen: 4th abdominal segment almost entirely yellow/orange
  • Legs brown with yellow ends
  • Head black with an orange-yellow face
  • Vespa velutina is a day flying species which, unlike the European hornet, ceases activity at dusk


The National Non-native Species Secretariat's (NNSS) identification leaflet, that all beekeepers are recommended to have a copy of, can be downloaded by clicking on this link:


Asian Hornet Poster v4


If you think you have seen an Asian Hornet

Take a picture and email it with details of where you saw it and your contact details and email it to


Or simply use the Asian Hornet Watch app (see here for Android or here for Apple) on your phone to send a picture and a location via GPS in the app straight to the non-native species secretariat and National Bee Unit.


For more information visit the Non Native Species Secretariat website.


If it is safe to do so, you can send in a sample to the National Bee Unit for examination to confirm identity. However, do not under any circumstances disturb or provoke an active hornets’ nest.


However do not under any circumstances disturb or provoke a hornet nest as Asian Hornets are especially aggressive if provoked. The NNS will arrange for its destruction.

OBKA Asian Hornet Co-ordination


Eric Perkins is the OBKA Asian Hornet Action team co-ordinator. He can be contacted at