Loxostege commixtalis, the alfalfa webworm, is a species of moth in the family Crambidae. It was described by Francis Walker in 1866. It is found in Fennoscandia, Estonia and northern Russia.[1] It is also found in North America, where it ranges from Nova Scotia and Newfoundland and Labrador west to the Yukon.
The wingspan is 20–.[2] Adults are on wing from June to July in North America and from May to July in Europe.
The larvae feed on various succulent plants, including sugar beet and alfalfa.