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Cluster fly:

Adults live harmlessly outdoors in summer but may enter buildings (usually roof spaces and lofts) in autumn to hibernate. 

Egg laid in damp soil, rotten vegetation by the female. Hatches within a week, soon after emergence seeks out parasite earth worms which are eventually killed.

Pupae in soil. Adults are a severe nuisance if a large number enter inhabited parts of buildings.

 Common house fly:

Often in association with human activity. Highly mobile and capable of travelling several miles. Breeds in rotten vegetable matter or animal faeces.

A female lays her eggs in batches on average between 75 and 150 per batch and will lay 5-6 batches in her lifetime.

Eggs are laid in moist material (rotting vegetables or animal faeces) and the larvae (maggots) hatch in about 8 hrs to 48 hrs.An egg to adult development is 1-2 weeks depending upon the conditions.

Adult usually live 15-25 days.
Many people die or get ill from diseases passed on by horse flies such as food poisoning and diarrhoea.

Fruit fly:

Fruit fly attracted to fresh fruit and vegetable because of the fermenting yeast. They are not only attracted to decaying food but also fermenting liquids such as sour milk, beer, wine.

Female lays 500 eggs on suitable food material such as fermenting fruit and vegetables. The whole fly cycle can take as little as 8 days. They are very rapid breeders (one generation in 7-8 days at 30 degrees).


Blow fly:

Blow flies breed in carcasses, meat and meat products. They will also use animal excrement and decaying vegetation. Blow flies are potentially disease carriers because of their feeding habits and they are pests of meat industry and slaughter houses and may breed on dead rodents, birds within buildings. 

Female lays up to 180 whitish eggs in batches on carcasses on meat.

Hatches into maggots within 1-2 days. Adults are very strong flyers and have a range of between 5-25 miles.

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