Raspberry Clearwing (Pennisetia hylaeiformis)
If you know of any Raspberry patches, I’d encourage you to have a close look for signs of this moth: a bit of old fashioned field craft is all that’s required.
Winter is the ideal time to search for signs of larval activity. Best to start by searching for the galls in the roots, just below ground level. Simply scrape away a bit of soil, if present, the galls are quite obvious.
You can also look for the exit holes, about 15-20 cm above ground level, and later in the year you could always try the pheromone lure that is available.