Housefly (<i>Musca domestica</i>) (IMAGE) University of Zurich Caption Depending on where the houseflies live, they use different methods for sex determination. Credit Peter Koomen Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.