Caddisfly larva (case-bearing caddisfly)

Freshwater streams, ponds, and wetlands; larvae typically live among submerged leaf litter, wood, or stones. Adults are attracted to lights and may enter buildings near water.

Larvae generally graze on algae and decaying plant material, though some species capture small aquatic organisms. Adults usually do not feed or consume only liquid substances.

The larva constructs and carries a protective case from plant fragments, sand, or other debris, enlarging it as it grows. It pupates underwater; winged adults emerge briefly to mate and lay eggs.

Harmless to people, pets, and household materials. Larvae help decompose organic matter and serve as important food for fish and other aquatic wildlife.