The Bertha Armyworm (Mamestra configurata) is a moth of the Noctuidae family. It is found in the western part of the North America (including Alberta, British Columbia, Washington, New Mexico and California) and Mexico. Adults are grey-black with a silvery-whitish kidney shaped spot and fringe on each forewing. The larvae feed on Canola. First feeding on the leaves, but later also feeding on the pods. Full-grown larvae drop to the ground in mid to late August to pupate.