This is an educational guide to the common housefly. It covers topics such as the housefly's anatomy, behavior, and life cycle. It also provides tips on how to identify and control houseflies in your home. Finally, it offers advice on how to prevent houseflies from becoming
From Wikipedia
The housefly is a fly of the suborder Cyclorrhapha. It possibly originated in the Middle East, and spread around the world as a commensal of humans. Adults are gray to black, with four dark, longitudinal lines on the thorax, slightly hairy bodies, and a single pair of membranous wings. They have red compound eyes, set farther apart in the slightly larger female.