That's a sharpshooter/leaf hopper. You can read more about them here. They usually don't do any serious damage to plants, but they do feed on sap from stems. They can contribute to powdery mildew as they excrete excess liquid as they feed. If you've ever been underneath a tree/bush and felt "raindrops" when it isn't raining, it's from these guys.

Thank you so much. Yes I saw very tiny drops ejected out from the tail end of this bug almost continously. Thanks for the site for more details about this bug.

Oh great , I have to now change miraculous "rain" on a clear day to bug poop. Thank you ever so much!