
Community identification
Drain Fly
Psychodidae
- Order & Family
- Order: Diptera, Family: Psychodidae
- Size
- 1.5 mm to 5 mm (approx. 1/16 to 1/5 inch)
Natural Habitat
Damp environments high in organic matter, such as bathroom drains, sewer pipes, septic tanks, and kitchen sinks.
Diet & Feeding
Larvae feed on the organic 'slime' (biofilm) that accumulates in drains; adults primarily feed on liquid carbohydrates like nectar or polluted water.
Behavior Patterns
Poor fliers that often crawl or take short, jerky flights; they are mostly nocturnal and are frequently found resting on walls near drains. Their life cycle is rapid, often completing in 1 to 3 weeks.
Risks & Benefits
They do not bite or transmit diseases to humans but are considered a nuisance pest. Their presence often indicates a clog or a buildup of organic material in the plumbing system.