Drain Fly Larva

Natural Habitat

Damp environments rich in decaying organic matter, such as drains, sewage pipes, septic tanks, and wet compost.

Diet & Feeding

Feeds on the slimy film of bacteria, fungi, and organic debris found in drains and moist areas.

Behavior Patterns

The larvae live within gelatinous films in drains; as adults, they are weak fliers and often stay close to their breeding source. They undergo complete metamorphosis.

Risks & Benefits

They are considered a nuisance pest but do not bite or transmit serious diseases. Their presence can indicate a plumbing leak or buildup of organic matter that needs cleaning.

Identified on: 5/26/2026