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Grubs in the lawn?
Penn State Fact Sheet
White Grubs in Home Lawn
Home lawn areas in Pennsylvania are often subject to severe and extensive injury by the larval stages (grubs) of various species of scarab beetles including: Japanese beetle, Asiatic garden beetle, European chafer, oriental beetle, as well as those of several common May or June beetles.
Ohio State Fact Sheet
Control of Japanese Beetle Adults and Grubs in Lawns
The Japanese beetle, Popillia japonica Newman, is the most abundant and important landscape pest in Ohio. This pest was detected in New Jersey in 1916, having been introduced from Japan. It is common for this pest to be abundant in one part of a town and not others.