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June Beetle
(John Obermeyer, Purdue University)
Common Name: June Beetle

Order: Coleoptera

Family: Scarabidae

Pest Status: June beetles (often called May beetles) feed on tree leaves as adults and grass roots as grubs. In most situations the damage is only minimal.

Appearance: June beetles range from 1/4 to 1-inch in length. The adults have red-brown or black bodies and have an oval shape.

Life Cycle: May or June beetles usually have a two-year life cycle. Females tunnel into the soil to deposit their eggs. In three to four weeks, the larvae hatch from the eggs and develop through three instars. In spring and early summer, the larvae pupate deep in the soil. Adults emerge in about three weeks.

Where to Collect: Adults are nocturnal and are highly attracted to lights in spring and early summer. Most species prefer open woods, meadows, lawns, grasslands, cultivated fields, and ornamental plant beds.