As large as a true Hornet, but yellower and lacks the wasp-waist.
Overwinters two or three times as larva.
Open woodland, parks, poplar plantations.
Considered a common and widespred species in Norfolk. Searching by looking for exit holes and old cocoons can be done any time of the year. Adults can be found at rest on Poplar trunks after emergence, usually early morning, on cool, cloudy days. (7am - 8.30am)
Pheromone attractants: hor or api
Pheromone activity times: 7:30-10:30.
Anglian Lepidopterist Supplies
Recorded in 52 (75%) of 69 10k Squares.
First Recorded in 1874.
Last Recorded in 2020.