Treehopper, a small winged insect. There are thousands of species of treehoppers, and they are widely distributed around the world. They feed on plant juices and lay their eggs in plant tissues, but are not numerous enough in the United States to be serious pests. Only one species, the buffalo treehopper, causes noticeable damage, injuring fruit trees. It is controlled by oil sprays.

Treehoppers are of interest mainly because of their fantastic shapes. The prothorax, the body region between the head and the wings, is variously shaped. It often grows up and back over the body and wings, forming bulbs, spines, crescents, or circles. Some treehoppers are called thorn bugs because the resting insects looks like a thorn. Treehoppers are seldom more than one-half inch (12 mm) long. Most of these found in the United States are brown or green, but tropical species are often brightly colored.

Treehoppers belong to the family Membracidae. The buffalo treehopper is Ceresa bubalis.