Adults have large, abnormally shaped, rough eyes. Wings are abnormal in shape and are sometimes reduced in size. The surface of the wing is irregularly curved and the tips are curved. The inner costal margin is removed to various degrees in many flies and wing venation is abnormal. Both sexes are very infertile.
Eyes large, abnormally shaped and rough. Wings abnormally shaped and sometimes extremely small. Wing surface irregularly curved. Inner margin removed to various degrees and venation abnormal. Viability good; male-sterile female-sterile RK2.