I've got what looks like aphid damage but I see no aphids. I battled with aphids two years ago and they were rather large and could not be missed. What I am seeing is small white specks, almost dustlike, over most of the damaged leaves. I can't tell whether this "dust" is moving or I'm staring at it for such a long period of time that I think it's moving.
I know there are like 250 varieties of aphids but are they this microscopic?