Cluster Fly
Description
Adults are about 3/8" long, slightly larger than the common house fly. Their coloration is a non metallic dark gray. The thorax lacks distinct stripes and has numerous short golden hairs. The abdomen has irregular lighter areas. They are slow moving and when crushed smell of buckwheat honey.
Habitat
Cluster flies are a nuisance because they overwinter as adults in the attics and wall voids of structures, especially older frame buildings. They enter the structure in early fall to seek shelter from cooling temperatures. Soon a cluster of adult flies accumulates in wall voids and dark corners, under shelving, beneath curtains, and in other protected areas. They are stimulated by warmth and are often found on the south and west side of buildings. Once stimulated cluster flies are attracted to light.
Hazards
* Contaminate foods.
* A nuisance pest.
