Bagworm (likely household casebearer)

Indoors on walls, ceilings, carpets, and sheltered corners; also in humid outdoor areas. The larva lives inside a portable silken case covered with dust and debris.

Larvae feed on old spider webs, wool, fur, feathers, dead insects, and other keratin-rich organic debris. Adults generally do not feed or feed only minimally.

The larva crawls while carrying its tapered case and retreats inside when disturbed. It pupates in the case; adults are tiny, grayish moths that are weak fliers and mainly reproduce.

Harmless to people and pets, with no biting or stinging risk. Small infestations may damage wool, fur, or other natural-fiber materials, while larvae help recycle household organic debris.