Plaster Bagworm

Natural Habitat

Typically found inside residential buildings, garages, and on the exterior walls of houses in humid climates.

Diet & Feeding

Larvae scavenge for organic debris, including spider silk, wool, fur, hair, and dead insects.

Behavior Patterns

The larva constructs a protective silk case covered in sand, soil, and debris. It can turn around inside the case to protrude its head from either end, allowing it to move in both directions. It eventually attaches the case to a vertical surface to pupate.

Risks & Benefits

They are considered a minor household pest because they can damage silk or wool fabrics and carpets, but they pose no physical risk to humans or pets. They help the ecosystem by consuming detritus and spider webs.

Identified on: 1/15/2026