Japanese beetle damage is pretty easy to identify. Usually, the bugs can be caught in the act. The telltale signs of Japanese beetles include skeletonized leaves or total defoliation. Japanese beetles also love to eat rosebuds — from the inside out. Keep in mind that Japanese beetles are seldom found west of the Mississippi River, but chances are good that they’re headed your way.
The beetles are strangely beautiful: roughly 3/8-inch long and 1/4-inch wide. They have shiny, metallic-green bodies and copper-colored wing covers.