Asian hornet spotted? Report it!

The Asian hornet is a species of wasp that has been coming to the Netherlands for a number of years. Originally, this wasp comes from Asia. The species is expanding rapidly. That's why we call it an invasive exotic species. The Asian hornet causes problems for nature. It hunts (honey) bees and other insects that are important for our flowers and plants. To protect biodiversity, it is important that the Asian hornet does not spread further. 

Recognize the Asian hornbug

The Asian hornet can be recognized by the following characteristics:

  • Length: between 2 and 3 inches long
  • Black thorax
  • Black antennas
  • Yellow end to the legs

The image below shows the differences between the Asian hornet and other species.

The Asian hornet is larger than a wasp and smaller than the European hornet. The thorax is black and the legs have a smaller yellow tip than the European hornet.

(Source: Flemish Bee Institute)

Is the Asian horned beetle dangerous?

The Asian hornet represents a danger primarily to bees, wasps, bumblebees and flies. To humans, the hornet is no more dangerous than a common wasp or European hornet. An Asian hornet will sting when it feels threatened, just like other wasp species. Near a nest, hornets may react more aggressively because they are defending their nest. Then they are more likely to sting multiple times. A sting is painful, but only poses a danger if you have an allergy to wasps. Are you allergic and get stung? If so, contact a doctor immediately. 

The Asian hornet makes 2 types of nests

Spring Nest

These nests are small and are often located in sheltered places where you are more likely to come into contact with the nest. For example, in a cavity wall, barn, birdhouses or carport. 

Summer Nest

In summer, the spring nest becomes too small. The hornets then make a new nest. This often happens high up in trees. These nests can become as big as a skippy ball. Are you pruning a tree or hedge in the summer? Before you start, check to see if there is a nest in it.

The website of the Dutch Food and Consumer Product Safety Authority shows you how to recognize a nest.

I've seen an Asian hornet

Do you see an Asian hornbill?

  • Take a clear picture.
  • Remember the location where you saw the hornet.
  • Check if it really is an Asian hornet.

Are you sure it is the Asian hornet? Then report it to the Asiatic hornbug hotline at waarneming.nl.

I saw a nest of the Asian hornet

Do you see a nest of the Asian hornet in the public space? Then report it to the municipality through the E-counter. We will then assess whether the nest needs to be removed. 

If you see a nest on your own or private property, please report it to the Asian hornet nest hotline on waarneming.nl.
Note: Do not remove the nest yourself! Enlist the help of a professional pest controller. 

Dealing with the Asian hornet moth

The Asian hornet snake has been on the European Union's list of invasive exotic species since 2016 because of its adverse impact on biodiversity. Since 2018, the provinces in the Netherlands have been responsible for policy on invasive exotic species. You can find more information about the policy on the Asian horned beetle on the website of the Province of North Brabant.