Plaster Bagworm

Indoor environments, often on walls or in corners of homes and buildings

Wool, fur, silk, and organic debris

Larvae create a protective, flat, spindle-shaped case from silk and atmospheric debris, which they carry around as they feed. They are most active in humid environments.

Generally harmless to humans. However, their presence can be an indicator of underlying humidity issues, and they may cause minor damage to natural fabrics like wool or silk.