Description
Adults are about 3 – 6mm long, with the female being larger than the male. They are dull gray, with the face having 2 velvety stripes.
Biology
The adult female will lay a total of 75 – 150 eggs per batch and will lay 5 – 6 batches in her lifetime. The eggs hatch in less than a day. The maggots (larvae) will develop in 3 – 7 days. Adults will live between 15 – 25 days. House flies will eat anything and regurgitate fluids to turn their food into liquid to feed.
Habit
A Females seek almost any warm, moist material with sufficient food for larval development for egg-laying purposes. Daytime house flies tend to rest less than 5 feet from the ground on walls, floors, and various objects. At night they rest primarily above 5 feet on ceilings, walls, plants, etc. usually near their daytime food source.