Cluster Flies

Cluster flies have a widespread distribution. Eight species are found in Britain and 31 in Europe. Pollenia species are also numerous in Australia and New Zealand (over 30 species); they are common in North America. P. rudis has spread widely in association with humans.

Common Hiding Place of Cluster Flies

when it gets cool, cluster flies cover up in breaks, fissure, and voids. Once inside, cluster flies can be found under a tire in storerooms, under blinds, behind pictures and furniture, and so on. Cluster flies additionally may leave their concealing spots and show up on radiant warm days during winter humming and “bunching” at windows.

What Do Cluster Flies Look Like?

Cluster flies are commonly dark gray with brilliant yellow hairs on the chest and sporadic light and dim ill defined situations on the mid-region. The wings of the grown-up cluster fly cover when the fly rests. Bunch fly hatchlings (or parasites) have long, wedge-molded bodies that are cream shaded.

Facts About Cluster Flies

Cluster flies are not destructive to property, they enter structures in the pre-winter essentially to rest.

They don’t have gnawing mount parts like pony flies or gnats. Not at all like blow flies cluster flies are not related with creature corpse, excrement, or woolens.

Cluster flies are carefully parasitic on night crawlers. Subsequent to incubating from eggs the cluster fly hatchlings find and tunnel into the body of a night crawler to take care of. The helpless worm doesn’t ordinarily endure the experience.

Common Types of Cluster Flies

Autumn Fly

It the same size and color as the housefly, with a yellow abdomen.

Common Cluster Fly

It is larger than a housefly, dull dusty brown/grey in color with a tessellated abdomen.

Green Cluster Fly

It has the same size as the house fly but shiny blue/green in color.

The problem of Cluster Flies

  • They are predominantly considered as a nuisance because of their habit of hibernating inside human houses. But they do not cause any damage the homes.
  • These flies sometimes leave tiny dark-colored spots of excrement on walls or windows, but these spots are not known to carry any human disease causing organisms.
  • Cluster flies may give out a strange odor when disturbed.
  • Also, if flies die in wall voids, they may attract larder beetles.

How To Eliminate Cluster Flies

  • Fill all the cracks or crevices, in walls, window or door frames with caulking. Make sure to seal every possible hole or crack like windows, doors, siding, behind chimneys, utility pipes, underneath the fascia etc.
  • If there are any damaged screens on doors or windows they should be repaired or replaced immediately.
  • Try to install insect screening or mosquito nets over air vents in soffits.
  • Contact professional pest control to eliminate cluster flies.