Flies

Cluster Fly – Pollina rudis

Markings :

Non metallic grey, lack stripes on thorax  (segments with the legs and wings attached) Yellow or Golden hairs on the back, behind the head and around base of wings.

Location :

Attics and wall voids of structures. Cluster around windows, on walls.

Detection :

Visual sightings.

General Information :

Cluster flies are close relatives of blow flies and are a similar size to house flies, but have a more robust body structure.

Biology :

The female flies mate in the spring and lay their eggs in soil crevices. The eggs hatch in 3 days and the larvae burrow into the bodies of earthworms where they develop. Development (egg to adult) requires 27 – 39 days. There are normally four generations a year.

Reasons for Control :

On warm days in winter and spring, these flies annoy building occupants when they become active and crawl sluggishly over walls and windows.