Yellow Underwing or Cutworm Moth

Scientific Name: Noctua pronuba

Order & Family: Lepidoptera: Noctuidae

Size: Wingspan: 50–60 mm (2–2.4 in); body length roughly 20-25 mm.

Gardens, agricultural fields, grasslands, and suburban areas; frequently enters homes through open windows.

Adults feed on nectar from flowers; larvae (caterpillars) are generalists feeding on grasses, vegetables, and ornamental plants.

Nocturnal; strongly attracted to artificial light. Larvae are 'cutworms' that hide in soil by day and feed at night, often cutting stems at the base.

Harmless to humans; however, the larvae are significant agricultural pests. Adults serve as pollinators and a food source for bats and birds.

Identified on: 1/1/2026