Adult strawberry rootworms are brown to black, shiny, oval-shaped beetles with four blotches on the shell-like wing covers. Adult beetles overwinter in mulch and soil crevices and become active in May and June. They eat small holes in leaves, and females lay eggs on older leaves near the soil surface. Larvae burrow into the ground to feed on strawberry roots during the summer. New adults begin emerging in mid-summer, and these beetles feed on strawberry foliage through early fall.