I have a young pagoda dogwood (it was planted last year- this is it's first full season) Unfortunately it's leaves are being eaten by some insect (i think).

The leaves are starting to resemble swiss cheese. They are covered with perfectly round holes about 1/4" in diameter. I've looked everywhere on line and can't seem to find anything about this. The only pest info I can find on dogwoods is for borers, and I know that isn't it because they affect the trunck and branches.

help!