slugs eat holes, but don't skeletonize leaves could also be caterpillars found this: Bean Leaf Beetle Bean leaf beetles are chewing bugs that attach themselves to the leaves of the green bean plants and eat pieces out of the leaves. Measuring 1/4 inch long, this beetle is yellowish-green in color and has four black spots on its back. Bean leaf beetles spend the winter in the foliage in wooded areas and emerge in early summer. Keep these green-bean-plant-eating bugs under control by removing dead leaves and foliage from the ground. If you think you may have a bean leaf beetle infestation, confirm the infestation by looking for beetles on your bean plants between 12:00 p.m. and 4:00 p.m., as this typically warm time of day is when the beetles feed. Read more: Bugs Eating Green Bean Plants : eHow.com http://www.ehow.com/list_7387427_bugs-eating-green-bean-plants.html#ixzz20FFrrUAp

Even though the attack is spotty, it's probably deer. Nothing else would eat a whole perennial like that (rabbits are too short). BTW, cuts from rabbit teeth are sharp and clean as if they were made with pruners. Deer cuts tend to be ragged since they pull and don't cut clean. I suggest spraying with a good repellent--Deer Off, Liquid Fence, Plantskydd, and try to concentrate on plants deer don't like. Strongly aromatic plants are not only unappealing, but also have some repellent value as the scent jams deer's predator defensese, their sense of smell. Such plants include Agastaches, Perovskia, Nepetas, Calaminthas, Geranium maccrorhizum as well as 'Bikovo', 'Karmina' et. al (but not other Geraniums). Growing plants that they really like, like Phlox, is asking for trouble. Now that they're in the restaurant, it's only a matter of time before someone tries the other items on the buffet.

It is an adolescent wood chuck! I suspected as much and so set a Han-a -hart trap for him but the only animal that took the bait (lettuce) was one of my dogs. He must be able to climb over a f foot high rabbit fence to get into the garden. The two kinds of repellent I have used are useless. Is there a better bait I can use? Is there a better way to keep him out of my garden? (Build a 6 ft fence (and have him or Mexico pay for it?)

Looks like some sort of caterpillar damage, so the culprit is probably long gone. But you can check anyway, examining the underside of the leaves closely. FWIW, insect damaged foliage is typically just a cosmetic issue - it doesn't actually harm the tree at all or affect growth unless the damage is so severe as to cause defoliation. And this is a long way from that point!! And at this time of year, there is really nothing to be done anyway, as the tree will be dropping its leaves shortly.