I remember reading a book all about Lamina air flows and how insects can use Vorticies on the top surface of the wing increase the speed of the air, many years ago (probably about 15!).
when you think about it like that, it's hard to see why any one would think a Bumble Bee can't fly!
The real tricky one, is the butterfly, but that takes advantage of the large wing area and the distinctive flapping motion to lower the pressure above the wing.
