Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Thin-lined Owlet (Isogona tenuis) is a moth of the Noctuidae family. It is found from Ontario, Wisconsin, Ohio and New Jersey, south to Florida and Texas.The wingspan is 28 30 millimetres (1.1 1.2 in). Adults are on wing from May to August in the north and from April to October in the south. The larvae feed on Celtis species.A moth is an insect closely related to the butterfly, both being of the order Lepidoptera.