Orange-banded arion (Arion fasciatus) is a common, exotic, land slug. It is native to northern Europe and was introduced into North America during the colonial era. It has slowly spread from New England north to Quebec, south to North Carolina, and west to Minnesota. It is listed as invasive in Wisconsin, but not in Minnesota and not nationally. It is found in ground litter and on herbaceous plants in forests, wet meadows adjacent to streams, and open and cultivated areas, including old fields and gardens.
Orange-banded arion is 1¼″ to 2″ long and slender when extended, short and bell-shaped when contracted. It is grayish to yellowish-brown and is covered with rows of pale bumps, giving it a granular appearance. There are two lateral, dark, blurry, longitudinal stripes. The area just below each stripe is yellowish, and the area below that is whitish. The head and tentacles are black.