Plaster Bagworm (or Household Casebearer)

Typically found indoors in warm, humid climates; they often inhabit closets, bathrooms, and garages, sticking to walls (especially stucco or plaster) and floors.

Larvae feed on detritus, including spider webs, old silk, woolen fibers, human hair, lint, and dead insects.

The larva constructs a distinctive flattened, pumpkin-seed-shaped protective case out of silk and debris (like sand, soil, or lint). It drags this case around as it moves and can retreat inside when threatened.

Risks: They are generally harmless to humans (they do not bite or sting) but can be distinct household pests if they infest fabrics or woolen goods. Benefits: They can act as minor cleaners by eating cobwebs and dead insect parts, though their presence is usually considered a nuisance.