Again, no picture yet ...
Bright green little suckers, maybe .25-.50 of an inch long. Their wings are folded upward (like a lacewing) and are not against the body like a fly or most bees. The closest I can come is a buffalo tree hopper, but unless they are young ones and will change considerably when they get to be adults, then that's not it. They do fly, sorta. They'll hop off a plant and then fly their way to another (fast little suckers, I was trying to catch one!)
LeeAnne
-zone 5, north of Boston-