they look like tiny mosquitos. and you wont see one unless you look really hard. they lay eggs in the tiny flower buds and turn them into a crisp. if you have a healthy plant and no flowers chances are midge is the problem. thats the first symptom. the second symptom is crispy black buds. or sometimes what look like black scratches on the bud. if you see any of these there are probably a few generations floating around. they only live for a few days. and new ones emerge. another tricky thing is that they come out when its warm and not windy. so not only do you have to pay attn to the plants but the weather too. neem is supposed to help. but a systemic works better. i dont want to hurt the beneficial bugs to much so im going to try the neem soak. usually the first flush is ok but the later the summer gets the worse they get if you do nothing