Cluster Flies

Cluster Flies (Pollenia rudis)

Statistics
About 5/16 inch long (7mm)

Colour
Non-metallic, light and dark grey areas on abdomen.

Description
The cluster fly is slightly larger than the common house fly. There are no distinct lines or stripes behind the head, and the abdomen has irregular light and dark grey areas.

Habitat
Adult flies of the last generation of the year become numerous during the late September to mid-October. As cold weather progresses, adults seek protected places to spend the winter. In many cases, this is within walls, attics, storage rooms, and cellars of houses. Screens offer no protection since these flies prefer to crawl in through small openings elsewhere around the building. For this reason they are extremely difficult to keep out of houses. Isolated houses in the country are especially prone to invasion, since they offer the only warm shelter for miles around.

Life Cycle
The female lays eggs in the soil near the burrows of earthworms. The tiny maggots that hatch from the eggs seek out earthworms to feed upon. The maggots of cluster flies have never been reared on any other food but living earthworms. When full grown, the parasitic maggot leaves the body of the host and enters the soil. There are about four generations a year.

Our cluster flies control services covers areas within South Birmingham and North Worcestershire which includes: Birmingham, Redditch, Bromsgrove, Halesowen, Barnt Green and Chaddesley Corbett

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