Alfalfa looper

Adults have silvery-gray forewings marked with an ivory colored "dog leg" mark similar to that found on the forewings of cabbage looper. The dog leg on the alfalfa looper is thinner and brighter compared to the cabbage looper. Alfalfa loopers are larger and brighter in color than cabbage loopers with a wingspan of 30 to 40 mm. Alfalfa larvae closely resemble the cabbage looper in color, but usually have a dark top stripe edged with white lines and two obscure white top-lateral lines. Again, it is difficult to separate the larvae of these two species in the field.