Lawn Moth (Larva/Caterpillar)

Scientific Name: Crambidae (various species)

Order & Family: Order: Lepidoptera, Family: Crambidae

Size: 10 to 25 mm in length depending on maturity

Lawn Moth (Larva/Caterpillar)

Natural Habitat

Typically found in turf grass, lawns, and grassy agricultural areas where they reside in the thatch or soil.

Diet & Feeding

Larvae feed on the roots, stems, and leaf blades of grasses, sometimes causing brown patches in lawns.

Behavior Patterns

Often nocturnal feeders, they construct silk-lined tubes in the turf thatch to hide during the day and undergo several molts before pupating into adult moths.

Risks & Benefits

Generally harmless to humans but can be considered a pest to lawns and turf managers; they contribute to the ecosystem as a food source for birds and predatory insects.

Identified on: 12/30/2025