Macrodactylus subspinosus (F.)
Distribution: Southeastern Canada and in most fruit-growing states in eastern US.
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. Larvae are larger C-shaped grubs that live in the soil. 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.