Adults measure 8 to 10 millimeters.
Flies in attic uk.
Cluster fly larvae develop inside earthworms living in the ground outside of homes.
Cluster fly image licensed under cc cluster flies also known as attic flies are household pests.
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Flies that gather in roofs around windows and on walls inside in the autumn and winter are called cluster flies also known as attic flies.
The females lay their eggs near earthworm burrows and the larvae then feed on the worms.
And the easiest entrance is usually through external gaps leading to your attic.
Cluster flies are large black coloured flies with the scientific name pollenia rudis they show up in homes from late fall through early spring.
Cluster flies are often known also as attic flies.
These are not the same as the blue bottles that buzz hard against the windows in the warmer weather or the house flies and smaller flies that are active in summer too.
Most commonly they move from the ground to your attic for the winter when it gets cold.
August 06 2020.
Cluster or attic flies are the genus pollenia in the blowfly family calliphoridae.
Naturally your house is warmer.
Attic flies which are also known as cluster flies are insects that often migrate into homes in the fall where they hibernate for the cooler fall and winter months one of the best tips for getting rid of attic flies is to keep them from entering the house in the first place as trying to eliminate them after they are in hibernation can be difficult.
The warmth generated here means that flies are naturally drawn into these cavities and voids particularly during the months of october and november where they congregate in groups or clusters.
What do they look like.
The grass flies or cluster flies or attic flies are the genus pollenia in the family polleniidae are completely harmless to human health.
A cluster fly is very much similar to a house fly.
Cluster flies then re emerge around late winter spring time when they can become a problem again.
The anomaly is that cluster flies may try to get into one house but may stay clear of a neighbouring house even if it is a pair of semi detached properties.
They are strictly parasitic on earthworms.
Cluster flies come from the calliphoridae family.
Can you prevent cluster flies.
Unlike more familiar blow flies such as the bluebottle genus phormia they do not present a health hazard because they do not lay eggs in human food.
Thus the common name they have of attic flies.
