Oak apple due to the superficial resemblance and the preponderance of the oak marble gall in the wild. Other galls found on oak trees include the oak artichoke gall and the acorn cup gall, but each of these has its own distinctive form. Some common oak-apple-forming species are the "Biorhiza pallida" gall wasp in Europe, "Amphibolips confluenta" in eastern North America, and "Atrusca bella" in western North America. Oak apples may be brownish, yellowish, greenish, pinkish, or reddish. Oak galls have been used in the production of ink since at least the time of the Roman Empire. From the Middle Ages to
Oak Harbor, Ohio gender makeup of the village was 46.5% male and 53.5% female. Benton-Carroll-Salem School District operates one elementary school, one middle school and Oak Harbor High School. The village has a public library, the Oak Harbor Public Library Central Library. The village has a public library, the Oak Harbor Public Library. (See reference 10 below) (Sign posted on building, on front of building, website, letterhead) Oak Harbor is home to the annual Apple Festival which is held in early October. Many apple themed events are scheduled, including the "Apple Run", a five-kilometer race on the Sunday of the festival. Oak Harbor,