''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 __NOTOC__ Fennoscandia (Finnish language, Finnish, Swedish language, Swedish and no, Fennoskandia, nocat=1; russian: Фенноскандия, Fennoskandiya) or the Fennoscandian Peninsula is the geographical peninsula in Europe, which includes ...

, Estonia and northern Russia. It is also found in North America, where it ranges from Nova Scotia and Newfoundland and Labrador west to the Yukon. The wingspan is . The forewings are extensively dusted with light bluish gray. The hindwings are gray. 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 A sugar beet is a plant whose root contains a high concentration of sucrose and which is grown commercially for sugar production. In plant breeding, it is known as the Altissima cultivar group of the common beet (''Beta vulgaris''). Together wi ...

and

alfalfa Alfalfa () (''Medicago sativa''), also called lucerne, is a perennial flowering plant in the legume family Fabaceae. It is cultivated as an important forage crop in many countries around the world. It is used for grazing, hay, and silage, as w ...

. They web together the leaves of their host plant. The larvae are greenish or blackish.

References

Moths described in 1866 Moths of Europe Moths of North America Pyraustinae Taxa named by Francis Walker (entomologist) {{Loxostege-stub