Macrodactylus subspinosus (F.)
Adults are slender, long-legged and fawn-colored with a reddish-brown head and thorax.
Mike Haas, MSU
The rose chafer is a light tan beetle with a darker brown head and long legs. It is about 12 mm long. There is one generation per year. Adults emerge from the ground during late May or June, near grape bloom time, and live for 3 to 4 weeks. Females lay groups of eggs just below the surface in grassy areas of sandy, well-drained soils. The larvae (grubs) spend the winter underground, move up in the soil to feed on grass roots and then pupate in the spring. A few weeks later, they emerge from the soil and disperse by flight. Male beetles are attracted to females and congregate on plants to mate and feed.