Insect and Spider Identification: ID white insects on my zucchini plants, 1 by bluffles

bluffles wrote:
I had a whole crop of canteloupe taken out by (I think) the same thing. They were covered in little white and black specks in a matter of days and plants were dead in less than a week. Now I see squiggly lines on the top of the leaves and these white little buggers underneath my zucchini. I thought they were whiteflies, but all the pictures seem like a bigger insect. These are tiny white. Yes, they fly.