Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Sleepy Underwing or Pink Underwing (Catocala concumbens) is a moth of the Noctuidae family. It is found in eastern North America, west across the southern half of the Prairie Provinces to eastern Alberta.The wingspan is 60-75 mm. Adults are on wing in August in one generation depending on the location.The larvae feed on Populus and Salix species. A moth is an insect closely related to the butterfly, both being of the order Lepidoptera.