Tropicals & Tender Perennials: I have a new kind of bug!!!, 1 by Kell

Kell wrote:
I first saw them on the inside of one of my hibiscus blooms. I thought the were black aphids. I sprayed them with Neem and they flew off. Then tonight they actually have the nerve to be inside my Rosamond brug. They are tiny, black, have wings that are good sized for their little body and when you go to squish them with your fingers they drop so you can't get them. Then the fly off. I could not kill any of them.

Any ideas? foe?