I could not see any bugs; it looks like the leaves are blistering. There are some leaves that look like something has been eating them, but we have also had a lot of wind. We have also sprayed for weeds, but the weed spray has been kept away about 150' from the vines that are affected. It has mostly affected the the Petite Pearl, and Somerset. The last few weeks have also been fairly hot, and I have increased how much I am watering. My St. Croix Do not seam to be affected. Here a few days ago I did see some ladybugs on one of my St. Croix's, but no other bugs. I have about 12 vines that have some curling to them, but only 2 that are real bad.