The adult corn stunt leafhopper and nymphs are light colored and usually appear after the first of July.
Adults fly or jump when disturbed and often gather on the corn plant in the center of the whorl.
Nymphs have no wings and readily run backwards, sideways, or forward when disturbed. It has also been observed in Yolo County. It rarely develops significant populations until July or August. With high populations, leaves dry prematurely, and black sooty mold may grow on honeydew. Probably of more significance than feeding damage is the corn stunt leafhopper's ability to transmit the spiroplasma that causes corn stunt disease.