Eyes are small and very rough, with the anterior border indented to give a kidney-shaped appearance. Wings are small, abnormal, outspread or upheld. Veins are thick and are often interrupted or fail to reach the wing margin. The wing margin is usually incomplete. The antennae are deformed. Macrochaetae are straggly and occasionally one is missing. Flies are short lived; 50% die less than 24 hours after eclosion. Sterile, probably because the flies are too weak to mate.

Eyes small and extremely rough; anterior border indented, giving a kidney shape. Wings small, abnormal, outspread, or upheld. Veins thick and often interrupted or fail to reach wing margin, which is usually incised. Deformed antennae. Bristles straggly; occasionally, one is missing. Flies short lived; 50% die less than 24 hr after eclosion. Sterile, probably because they are too weak to mate. RK3.