Invasive Asian Hornet Officially Classified as Established in North Rhine-Westphalia

The Asian hornet has significantly expanded its presence across North Rhine-Westphalia, leading authorities to classify the invasive species as permanently established in the region. As of March 2025, the species reached a status where total eradication is no longer considered a realistic goal by environmental officials. This classification shift, moving from Article 16 to Article 19 of the EU Invasive Species Regulation, fundamentally changed how the state manages the insect. Previously, authorities were mandated to remove every detected nest, but this requirement ended due to the widespread nature of the population. The state now focuses on management and monitoring rather than total elimination. Reporting sightings to the State Agency for Nature, Environment and Consumer Protection remains a critical component of the current strategy.

The Asian hornet, native to Southeast Asia, was first detected in Europe in 2004 in the Lot-et-Garonne department of southwestern France. It is believed the species arrived via a shipment of pottery from China. Since its initial discovery, the hornet has spread across several European countries, including Belgium and the Netherlands, before entering Germany. The species is slightly smaller than the European hornet and is distinguished by its dark body and yellow-tipped legs. In North Rhine-Westphalia, the insect typically colonizes areas below an altitude of 200 meters, frequently building nests along river courses and at the edges of urban settlements.

Environmental experts describe the Asian hornet as a superpredator that poses a severe threat to local biodiversity, particularly honeybees and wild bees. The hornets often hover in front of beehives to capture returning foragers, which can lead to the collapse of entire colonies. Beyond bees, their diet includes a wide range of other insects, disrupting the local ecological balance. Despite their aggressive hunting behavior toward other insects, their sting is generally considered no more dangerous to humans than that of a common wasp, provided the individual does not have an allergy. However, the sheer size of their colonies, which can contain thousands of individuals, presents a challenge for local pest control efforts. The species is currently listed as a priority invasive alien species by the European Union due to its impact on the environment.

While the mandatory removal of nests by the state has ceased, the LANUV continues to track the spread through public reports. Residents who identify the species or its distinctive primary or secondary nests are encouraged to use official reporting portals to assist in data collection. Management efforts are now increasingly focused on protecting specific high-value areas, such as commercial apiaries, rather than general suppression. The cost of nest removal in non-essential areas may now fall on private property owners in certain jurisdictions. This strategic pivot reflects the reality that the species has successfully integrated into the regional ecosystem. Experts emphasize that while the hornet cannot be removed entirely, its impact can be mitigated through targeted local actions.

Spread of Vespa velutina in Europe: — ; — ; —