Hi all,
Just trying to keep this thread alive as I've noticed a much higher volume of hornet moth emergence holes in poplars this year, which may be due to last years' long, dry summer. I've seen them in grey and hybrid black poplars in Gloucestershire, and there are accounts of the larvae boring between 10-20cm into the tree. This is contrary to findings on this site whereby the bore holes are 4-5cm at most into the trunk.
This link is over 10 years old yet appears to be the only source of useful information for arbs. Does anyone know of any more research? In particular on whole tree failure?
Many thanks
Phil
