Plaster Bagworm

Natural Habitat

Often found indoors on walls, especially in garages, closets, and underneath furniture. They thrive in high humidity environments.

Diet & Feeding

Feeds on spider webs, wool, hair, lint, and old insect skins/fragments.

Behavior Patterns

The larva constructs a flattened, pumpkin-seed-shaped case made of silk and debris (sand, paint, lint) which acts as camouflage. It drags this case around as it moves, capable of extending its head from either end to feed or move.

Risks & Benefits

Generally considered a household pest. They do not bite or sting humans, but can damage woolen fabrics and rugs. Their presence often indicates spiders or other insect debris nearby.

Identified on: 2/7/2026