Household Casebearer

Natural Habitat

Indoor environments, particularly on walls in humid, subtropical climates.

Diet & Feeding

Feeds primarily on natural fibers like wool and silk, as well as spider webs and insect remains.

Behavior Patterns

The larva constructs a spindle-shaped silk case covered in sand and debris. It carries this case while crawling and can turn around inside it to feed from either end.

Risks & Benefits

Generally harmless to humans but can occasionally damage clothing or carpets made of natural fibers; provides minor ecosystem service by cleaning up spider webs.

Identified on: 12/31/2025