Description
    May beetles, also known as June beetles or June "bugs", are found throughout eastern United States.

    The adults are oval, robust insects that range in color from light straw to dark brown and in size from 1/2 to 3/4 inch long. The larvae, known as grubs, are milky white and C-shaped; they live underground and feed on plant roots. Adults are most often seen at night flying around lights or into windows and screens during late April, May, and June.

Injury
    The adults feed at night on the newly expanding buds and leaflets of black walnut and other trees. Entire buds may be killed. The beetles also chew holes in already expanded leaves, causing the characteristic shot-hole effect in young leaves in early spring.

Control
    Usually no control is necessary.