Plaster Bagworm

Natural Habitat

Typically found indoors in warm, humid climates; they often inhabit dusty corners, closets, under furniture, or along walls and baseboards in houses (especially in garages and bathrooms).

Diet & Feeding

Detritovores feeding on spider webs, old insect skins, wool, animal hair, dust, lint, and sometimes dried insects.

Behavior Patterns

The larva constructs a distinctive flattened, pumpkin-seed-shaped case made of silk, sand, and debris, which it drags around while feeding. They are often seen attached to walls or hiding in crevices. When ready to pupate, they attach the case to a vertical surface.

Risks & Benefits

Generally considered a harmless household pest. They do not bite or sting humans, though they can cause minor damage to woolen fabrics or rugs if populations are high. Their presence usually indicates dust accumulation.

Identified on: 2/10/2026