Saturday, August 13, 2011
Unlike most Junebugs that feed on the roots of grasses and turf as grubs, this species feeds on the roots of trees. As adults they feed on the foliage and fruit of grapevines. In large numbers this feeding habit could damage grapevines and the fruit. Normally though you will only see a few beetles, so feeding damage is minimal. Females will lay their eggs on rotting stumps or decaying trees. When the eggs hatch the young grubs must burrow into the soil and find the root system they will feed on. Once they reach full size they will create a pupation chamber to finish their development. The pupal stage lasts all winter with the adult beetles emerging the following June. There is only one generation per year.