I thought originally that the holes in our rhodie leaves were caused by slugs, although I didn't see any slug trails. The holes are large and often quite circular. Sometimes a leaf is eaten to the point that only the main vein is left. Someone mentioned the root weevil to me, but I haven't seen any of the adult critters on the plants. And the damage looks considerably different from what I have seen in the pictures. I have found several pale green caterpillars, something over an inch long, and maybe 3/16" in diameter. Could they be the culprits? And what is the solution to getting rid of them?