04/11/2025
Update on the Yellow-legged Hornet
Dr. Gard W. Otis
Professor Emeritus, University of Guelph, Canada and Adjunct Researcher, Institute of Bee Health, Bern, Switzerland
Amidst the reports of huge colony losses and the political chaos in the USA, the Yellow-legged Hornet (YLH; Vespa velutina) seems to be far from most beekeepers' thoughts. This invasive hornet has contributed to the deaths of huge numbers of honeybee colonies in western Europe. Unfortunately, it has made its way to North America: it was first reported in Savannah, GA, in August, 2023, and 7 nests, all near the city of Savannah, were killed that year. Clearly some hornet colonies escaped detection and reared daughter queens because 50 additional hornet colonies were located and destroyed in Georgia and South Carolina last year. Overwintered queens should become active soon, but as of 18 March, 2025, there have been none reported yet.
To continue reading, please visit: https://www.beeculture.com/update-on-the-yellow-legged-hornet/
Photo Credit:
The Yellow-legged Hornet is a large wasp with distinctive yellow legs. In late summer and fall, YLHs frequently hover in front of bee hives to catch foragers as they return to their colony. Photo credit: Quentin Rome, Museum nationale d’Histoire naturelle, Paris.