From your picture, this is a green leafhopper.
Characterization?
Adults are 7-10mm long, slightly smaller in males than females, and lime green. The head is orange-yellow, with 1 small black spot on each side, 2 reddish single eyes, and 2 polygonal black spots between the single eyes. Forewings leathery, green tinged with greenish-blue, tips pale and nearly translucent; forewings reverse, hindwings and dorsum of abdomen black, sides of abdomen and ventral surface orange-yellow. Feet yellowish white to orange-yellow, plastron 3-segmented. Eggs oblong-ovoid, slightly curved, more pointed at one end, about 1.6 mm long, creamy white to yellowish white. Worms and adults are similar, ****5 age, the first age gray-white; 2 age light gray slightly yellowish green; 3 age gray-yellowish green, the back of the thorax and abdomen has 4 brown longitudinal stripes, the emergence of wing buds; 4, 5 with the 3rd age, mature body length of 6-8mm.