Early larval development takes approximately 4 to 6 weeks. Larvae slow development over the winter, and in mid-April they suddenly spring back to activity and eat until October. They then hibernate until the third year, when they resume feeding in July and become fully mature in August. However, the fully mature adults do not become active until the following spring, giving the cockchafer a lengthy life cycle.
Development - Life Cycle: metamorphosis
- Blum, M. 1985. Fundamentals of Insect Physiology. New York: John Wiley and Sons.