Many of the whites are the carapace of newly hatched aphids. The recent discussion on organic controls had slipped down to page 2. I linked it for you below.

I just spritz them off with the water hose.

Dave

Here is a link that might be useful: Organic ways to control aphids discussion

Thanks, Dave. Will this injure my ladybugs?

What? spritzing them with water? No. They just fly off and come back later