Household Casebearer (often specifically the Plaster Bagworm or Case-bearing Clothes Moth larva)

Natural Habitat

Found indoors in homes, garages, and closets, particularly on walls, baseboards, carpets, and underneath furniture. They thrive in humid environments.

Diet & Feeding

Detritivores feeding on keratin-containing materials such as wool, hair, lint, spider webs, and dead insects. They consume the fibers of the materials they live on.

Behavior Patterns

The larva constructs a flattened, pumpkin-seed-shaped protective case out of silk and debris (sand, dust, lint) which it carries around. It can retract fully inside when threatened. They are often seen dragging their cases across walls or floors.

Risks & Benefits

Generally considered a household pest. While they do not bite or sting humans, they can cause damage to woolen clothing, rugs, and fabrics. Large infestations can be destructive to natural fibers.

Identified on: 3/2/2026