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Filter Fly (Psychoda sp)

Filter Fly (Psychoda sp)

 


Filter flies are common but often overlooked insects associated with moist, highly organic areas such as sink drains, sewage treatment facilities, storm drains, dung and rotten vegetation. The immature stage or larva is considered beneficial, an essential part of the cycle that breaks down waste into water-soluble compounds. However, the adult flies can sometimes become numerous enough in the vicinity of breeding areas to be annoying to people.

Identification:
Adults: 2mm, wings almond shaped, hairy and carried at a roof-like angle in flight. Adults are small and very hairy, with a pair of pointed wings. They are frequently mistaken for small moths since the wings are held roof-like over the body when at rest. They are weak fliers and often appear to be jumping or hopping. Flight and mating activities normally occur in the evening hours when they are attracted to lights.

Biology:
Each female can produce about 100 eggs and, under optimum conditions, development can be completed in two weeks. Eggs hatch into small pale larvae which are the most resistant life stage, being capable of surviving temperature extremes and habitats often low in oxygen. Following a feeding period, larvae pupate and soon emerge as adult flies. Adults live only three to four days without food, but they can survive for weeks if nectar or other liquid carbohydrate sources are available.

Control:
Filter flies may become abundant around bathroom or kitchen sinks. Determine and eliminate the source of infestation by looking for concentrations of adult flies around potential larval habitats such as cooling towers, air conditioners or other places containing standing water and vegetation. Any lingering adult flies may be controlled by the use of a residual insecticide or ULV treatment

Products to control Filter Fly:

Ecorex Actio Plus (1L) 
Ecorex Action Plus is an insecticide product for professional use against flying and crawling insects.

Eradisect Flying and Crawling Insect Killer (600ml)
A good all round flying and crawling insect killer with rapid knock down and good flushing properties.

Eradisect Single Shot (530ml)
Single shot with total release trigger. Rapid action. Can be used in animal facilities including poultry houses.