The grass flies or cluster flies or attic flies are the genus pollenia in the family polleniidae are completely harmless to human health.
Flies in the attic uk.
Thus the common name they have of attic flies.
Most commonly they move from the ground to your attic for the winter when it gets cold.
They are strictly parasitic on earthworms.
Cluster fly image licensed under cc.
Cluster flies are common in the loft and attic spaces of homes and business premises.
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.
Cluster flies do not reproduce indoors.
And the easiest entrance is usually through external gaps leading to your attic.
Cluster flies also known as attic flies are household pests.
They tend to travel in huge swarms of thousands of flies.
Cluster flies are commonly found in quiet undisturbed parts of your home such as attics and wall voids.
The tendency of clustering in large numbers inside attics.
Cluster flies seek refuge in cold weather and find their way into attic spaces and similar areas indoors.
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.
Light and dark gray checkered abdomens.
This name describes its characteristics very well i e.
A cluster fly is very much similar to a house fly.
The females lay their eggs near earthworm burrows and the larvae then feed on the worms.
Naturally your house is warmer.
Cluster flies are also known as attic flies.
Their aim is to over winter and they can find their way into loft attic or roof void spaces.
This is the same family to which bottle or blow flies belong.
Along the roof or attic.
Although cluster flies don t pose a direct health risk to humans they can be an annoyance.
Cluster flies come from the calliphoridae family.
You must be asking yourself are cluster flies dangerous.
The thorax of an adult cluster fly is covered in short golden hairs and the wings overlap when at rest.
What are the risks of a fly infestation.
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.
Adults measure 8 to 10 millimeters.
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.
By instinct they seek shelter away from the elements such as in the fall when it gets cold.
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.
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.
You may see a large group of cluster flies around a window as they are attracted to the light on sunny winter days.
They require warm places to hibernate over winter.