Over the years, I have learned to recognize those critters ( not by name, of course). The most common ones are the big black fuzzy wuzzy ones that creep around on our veranda and love the leaves of the little sapplings along our driveway.
I use my rustic walking stick to knock them off the branches and leaves and then smash them with my rubber boot. Don't tell me they will develop into beautiful moths. We have enough beautiful moths and butterflies and bees and wasps and mosquitoes and lovebugs, thank you. But nothing should be making a snack out of my plants!
I noticed this morning that something had been munching on my Knock-out roses. Well, here is the culprit: