The Japanese beetle is not very destructive in Japan, where it is controlled by natural predators, but in America it is a serious pest of about 200 species of plants, including rose bushes, grapes, hops, canna, crape myrtles, birch trees, linden trees and others. These insects damage plants by consuming only the leaf material between the veins, and may also feed on fruit on the plants if present.
• The Japanese beetle is about 15 millimeters, or just over a ½ inch long, with iridescent copper-colored wings and a green head.
• Japanese beetles are poor fliers and will often run into walls, dropping several centimeters afterward.
• The lifecycle of the Japanese beetle is typically one year in America but can be longer in cooler climates.