Plaster Bagworm

Natural Habitat

Typically found indoors in high humidity environments, residing on walls, underneath furniture, and in closets. They are common in tropical and subtropical regions like Florida.

Diet & Feeding

The larva feeds on silk/cobwebs, woolen fibers, dead insects, and discarded hair or skin flakes found in house dust.

Behavior Patterns

The larva constructs a protective, flattened fusiform (spindle-shaped) case made of silk and debris (sand, soil, fibers) which it carries around. The larva stays inside the case, only protruding its head and legs to move and feed. They often attach themselves to walls to pupate.

Risks & Benefits

Generally considered a nuisance pest rather than a major threat. They do not bite or sting humans. However, a large infestation can cause minor damage to fabrics like wool or rugs.

Identified on: 2/12/2026