Housefly, an insect pest found in nearly all parts of the world. It is one of the true flies. Houseflies cannot bite, but they carry disease causing microorganisms on their bodies and in their digestive systems. By contaminating food, houseflies spread such diseases as typhoid fever, yaws, dysentery, cholera, and trachoma.

The houseflyThe housefly is found in all parts of the world.

The female housefly lays from 100 to 200 eggs at a time in garbage or other organic matter. After about 12 hours the eggs hatch into small, white larvae (maggots). The larval stage lasts about five days. The pupal stage lasts from five days in warm weather to a month in cold weather. Under favorable conditions, the adult lives 30 days.

The housefly has been brought under control in many areas by good sewerage systems, garbage disposal, and other elimination of its breeding places. Houseflies are also brought under control through the use of insecticides. Protection of food by the use of screens, refrigerators, and covered containers has checked the spread of disease by houseflies.

The housefly is Musca domestica of the order Diptera.