Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Magdalen Underwing (Catocala illecta) is a moth of the Noctuidae family. It is found from south-western Ontario south to Tennessee and South Carolina and west and south to Texas and north through Oklahoma and Kansas to Nebraska, Wisconsin, Indiana, Illinois and Michigan.The wingspan is 60-70 mm. Adults are on wing from May to July depending on the location. There is probably one generation per year.The larvae feed on Amorpha canescens, Gleditsia triacanthos and Robinia pseudoacacia.