Arion gilvus

Arion gilvus is a medium-sized species, reaching an extended length of up to 65 mm The back is typically a yellowish to brown color. The body color lightens as it moves downward along the flanks. The flanks are marked by dark lateral bands. A distinctive feature is the presence of a yellowish-grey line running along the upper edge of these dark bands. The foot sole is white or a uniformly yellowish color. The slime secreted by the animal is a pale yellow.