Dark-fly (IMAGE) Genetics Society of America Caption This is a scanning electron microscope image of the head of "Dark-fly," a Drosophila melanogaster line reared for 1,400 generations in a dark environment. Credit Naoyuki Fuse, Kyoto University. 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.