Army Cutworm/Miller Moth
Euxoa auxiliaris
Identification
army cutworm (caterpillar):
- immature stage of the miller moth
- grayish black with patterns of gray and brown stripes
miller moth:
- adult stage of the army cutworm
- larger moths; wingspan 1 1/2 – 2 inches long
- gray or light brown wings with different colored markings
Nesting Habits
- lay eggs in thick vegetation, turfgrass and weedy areas surrounding wheat or hay fields
- seek dark sheltered spaces during the day, such as dense vegetation
- mass migrations of moths in late spring can inundate homes and buildings
Diet
- army cutworm: variety of plants, including lawn grasses, and broad leaf weeds
- miller moth: nectar from flowering plants
Significance
- cutworms common in lawns in spring; may damage garden plants, field crops and hay
- moths can be a nuisance during migration in late spring (2 - 3 weeks long)
IPM Recommendations
- Seal any openings, especially around windows, doors and ventilation systems prior to migration period (late spring).
- Reduce lighting in and around the building at night.
- Use a vacuum to remove moths indoors and outdoors.