Yellow Legs

The Asian hornet first arrived in Europe in 2004, hitching a ride in shipping containers from Asia. It has been spreading ever since, and Luxembourg is now firmly on the map of its expanding territory[1].

The problem is appetite. Asian hornets prey on native honeybees and bumblebees, feeding them to their larvae. A biological station specialist at Luxembourg's Environmental and Nature Protection Syndicate (SIAS) explains that the threat intensifies in late summer, when hornet colonies reach peak size and their demand for food spikes. They attack pollinators more frequently, just as native bees are already under pressure from pesticides and habitat loss[2].

Warmer temperatures are helping the species establish itself further north. This is the same heatwave pattern driving the grain harvest weeks early, feeding toxic algae blooms in swimming lakes, and drying out forests to wildfire-ready kindling. Climate change is not a single event. It is a distribution of consequences, and invasive species riding warmer currents is one of them[3].

The hornets are slightly smaller than the native European hornet, but identifiable by their yellow legs, yellow-orange face, and dark brown to black body with an orange band on the abdomen. The yellow legs are the key tell, distinguishing them from native species which are more yellow-brown overall. They are not more aggressive than native hornets, but they will defend their nests vigorously[4].

Anyone who spots a nest is encouraged to contact SIAS or local authorities. Those who hire a specialised company to remove one can apply for a subsidy through MyGuichet. It is a small, practical response to a much larger ecological shift, but it is the kind of thing that matters when the large solutions are slow and the small problems multiply[5].