The Moth/Drain/Filter Fly

 
  

Appearance

 

This tiny fly is often referred to as the moth fly due it's many tiny hairs creating a furry moth like appearance.
 
The adults are black or brown and only around 2 mm long and have short bodies. Their leaf shaped wings carry straight pronounced veins.
 
 

 

Life Cycle

 

Between 50 - 100 eggs are laid in more solid material that collects in drains, sewers, septic tanks and ground that has been contaminated with sewage. 
 
The whole life cycle is completed between 10 - 20 days depending on conditions.  Eggs hatch within 48 hours. The larvae feed on sediment, decaying vegetation and microscopic plants and animals.  The larval stage lasts from 9 to 15 days before pupating. 
 
These flies are poor flyers and are generally seen flying only a few metres at a time often choosing to walk instead.
 
 

 

Treatment
Removing the breeding source is often the only means of breaking the life cycle.  This may require unblocking drains or applying deep cleans to affected areas prior to insecticide treatments.
 
In industrial environments such as sewer plants or water treatment facilities, more specialist treatments need to be implemented.  We work with entomologists to provide these specialist services.
 
 

 
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