If I get my foliars on regularly I don't see insects at all....
It appears so. I see something similar on my leaf surfaces usually with insect carcasses suspended in the fungal web. If you have mites they will no longer dwell under the leaf surface but instead be on top of the leaf exhibiting strange behavior. Weird stuff.
I have some cucurbits that I use a sprinkler on...and yes I do know you cannot do that. They will get powdery mildew about every thursday. I spray them on friday and they are fine until next thursday.
Some of this stuff is simply amazing