Common cockchafer
four years for the larvae to fully develop. The grubs are 10 to 20 mm in the first autumn, 30 to 35 mm by the following autumn, and 40 to 46 mm in the spring [...] genus Melolontha, in the family Scarabaeidae. Damage symptoms The common cockchafer ( Melolontha melolontha ) does most of its damage in the larval stage [...] common cockchafer ( Melolontha melolontha ) are 2 x 3 mm, but they increase in size by absorbing water. The larvae (grubs) have a whitish curved body, large