Yellow jackets (e.g. Vespula spp. and Dolichovespula spp.) along with hornets (Vespa spp.) are voracious feeders of raspberry fruits, and create dangerous situations to pickers.
Yellow jackets can build papery nests on buildings, in doorways, and on branches of trees or bushes.
More information:
- Cane fruit – Yellow Jacket – (Pacific Northwest Insect Management Handbook)
- Yellow Jackets – (University of Illinois IPM)
Use these resources if you need additional help with diagnosis and to find solutions to your problem.