Drain Fly Larva (Psychodid Larva)

Moist, organic-rich environments such as sink drains, sewer pipes, septic tanks, and damp compost.

Decomposing organic matter, sludge, algae, bacteria, and fungi found in drain biofilm.

Larvae live submerged or partially submerged in gelatinous drain slime, feeding continuously until pupation. They are slow-moving and prefer dark, humid crevices.

Benefits: They act as decomposers, helping break down organic sludge in plumbing systems. Risks: While generally harmless to humans and non-biting, large populations can indicate poor hygiene or drainage issues, and rare cases of opportunistic myiasis or asthma triggered by airborne fragments of adults have been reported.