Can anyone help me with this? My neighbour has had bumblebees with deformed wings crawling to his backdoor; two or three a day for several days. He can't find a nest but lives close to a field boundary and some rough ground. What's happened to the bumblebees? He looked at one under a microscope and saw a white 6-legged crab-like parasite about 1/4 the size of the bee's eye. Is that anything to do with it?
What should he do?
Thanks and best wishes
EDITOR'S NOTE: Many thanks to David for letting us reprint this