Drain Fly Larva

Moist environments high in organic matter, such as drains, sewage treatment plants, septic tanks, and wet soil.

Scavengers that feed on decaying organic matter, sludge, algae, and bacteria found in biofilm.

Larvae are aquatic or semi-aquatic, living within the gelatinous film of drains. They undergo complete metamorphosis (egg, larva, pupa, adult) over 1 to 3 weeks.

Generally harmless to humans but can be a nuisance in homes. They help decompose organic matter in sewage, though large infestations may spread bacteria from drains to food surfaces.