The Asian hornet, Vespa velutina, has become a permanent resident in European gardens, with its presence confirmed in regions like Lot-et-Garonne since 2004. This species is believed to have arrived in Europe through a single colonization event, when a fertilized queen was accidentally transported from the Shanghai region in a horticultural shipment. Since then, it has spread to several European countries, including Portugal (2011), Belgium (2016), and Switzerland (2017). Observations show the hornet hunting in gardens, feeding on plants such as rosemary, oregano, and tarragon, and now it is regarded as part of the local environment.
A recent Portuguese study revealed that the nests of the Asian hornet are built using a unique combination of plant materials and substances from the insect’s saliva, including calcium oxalate, nitrogen, and minerals like quartz, lime, phlogopite, or microcline. Researchers have suggested that the hornet’s construction techniques might offer inspiration for innovations in industrial applications, ecological building, or 3D printing technologies.
Efforts to manage the spread of the Asian hornet have included drone-based spraying operations aimed at destroying nests, as well as a French government initiative announced in March, which plans to allocate 3 million euros annually to combat the species. However, this effort coincides with a proposed law to reauthorize the use of neonicotinoid insecticides, which have been associated with negative effects on bee populations.
In some areas, local biodiversity programs, such as the intermunicipal biodiversity atlas developed in a Jurassic valley, have prioritized controlling the Asian hornet over restoring natural habitats and biodiversity. This approach has drawn criticism for emphasizing quick, practical solutions rather than tackling the underlying causes of biodiversity loss.
In response to the threat posed by the Asian hornet, some have turned to natural predators like the apivorous bondrée, a bird species that feeds on hornets. A recent Spanish study found that a pair of these birds can consume several dozen nests each year. This natural method of control has been praised as a more elegant alternative to mechanical interventions like drone spraying.
Asian Hornet Establishes Presence in European Gardens Amid Ongoing Control Efforts
AI-rewritten from original reportingHow it works
asian-hornetvespa-velutinainvasive-speciesbiodiversitynatural-predatorsecological-impact



