This familiar beetle may be a severe pest of grape during the summer, feeding mainly on foliage and rarely on berries. The large, white, C-shaped larvae overwinter several inches below the soil surface.
Males emerge one or two days earlier than females.
Adults are shiny green with copper-colored front wings. Beetles skeletonize leaves of some varieties, or eat completely through the leaves of other varieties. Although feeding on fruit of some crops, such as peach , grape berries are rarely attacked. Feeding is concentrated in the upper part of the vine canopy. Peak adult activity is in July, but may continue into September.