Japanese beetle outbreaks discovered on the Swiss border: French authorities call for vigilance

Cette espèce constitue une menace pour les plantes alimentaires, forestières et ornementales. Pixabay – Richard655

Two outbreaks of Japanese beetles have been discovered in Switzerland, near the French border, the Swiss authorities have indicated. This particularly voracious beetle is considered a serious threat to agriculture.

The departments of Doubs and Haut-Rhin are calling for vigilance after the detection of outbreaks of Japanese beetles on the Swiss border, reports franceinfo this Friday, August 2, 2024. This species poses a threat to food, forest and ornamental plants, such as vines, fruit trees and lawns. The French authorities are concerned about its increasing proliferation.

Very dangerous for plants

According to our colleagues, a population of Japanese beetles was detected on June 20th near Basel in Switzerland, and a second outbreak was found 3.5 km from the French border. Classified as a priority quarantine organism in the European Union, the Japanese beetle is native to Asia and has been present in Europe since 2014.

This beetle is very dangerous for plants and is gradually extending its range. Adult specimens measure approximately 10-12 mm long and can be confused with other beetles present in France, in particular certain cockchafers, explains the Doubs prefecture.

To limit its proliferation, approximately 40 traps have been installed in Alsace, near sites at risk of introduction such as customs platforms, railway freight stations, airports, motorway service areas, road centres, markets and stations. The Japanese beetle often travels in trains or trucks, which facilitates its dispersal. Adults can be easily detected with the naked eye and captured by hand, the Ministry of Agriculture and Food Sovereignty states on its website.

Surveillance

Surveillance is the most effective way to combat this pest. People living near Switzerland are encouraged to report the presence of Japanese beetles in their gardens to the authorities. The report, accompanied by photos, can be made via a dedicated link, to the regional directorate of food, agriculture and forestry (DRAAF), or by telephone on 03 39 59 40 95.