(Photo taken 7/9/08)
Speckled Sharpshooter (Paraulacizes irrorata)
One of the multitude of leafhoppers -- around 3000 species in North America, 20,000 worldwide -- that feed on plant sap. This particular species is found in the central, northeastern and southeastern USA as well as Mexico.
Many species of leafhoppers coat their bodies and wings with a light dusting of water-repellent waxy material (brochosomes). That's the reason the water is tending to bead up and slide off this Speckled Sharpshooter after a light rain.
Thanks to Ron on BugGuide for the ID.