We live in the northern suburbs of St. Paul. In our garden we have (among other plants, trees and shrubs) a number of rosy lights azaleas, what we believe to be high bush cranberry viburnums and three small evergreens (not sure exactly what these are). All of these shrubs have suffered serious defoliation in the past ten days (approximately May 20 to May 30). We have been doing some of our own research and it appears that high bush cranberry can be susceptible to viburnum leaf beetle, and azaleas and evergreens to sawflies. We don't see any obvious larvae or insects on the shrubs. Something similar attacked the azaleas and evergreens, plus some gooseberry bushes, about this time last year but then the shrubs recovered. This year the problem seems to be spreading. Photos of the damage are attached. Can you provide some advice on what this might be and how to deal with the problem? We don't want it to spread further. I have attached 3 pictures. There are 3 others that I would like to see to give you a complete view of the issue. Thank you.