Flies are slightly smaller than normal. Macrochaetae are thin and weak, and are mostly almost completely unpigmented, giving a silvery appearance, especially at the tips. Microchaetae are almost unaffected. Males are sterile and have reduced viability.
Fly slightly smaller than normal. Bristles thin, weak and most are unpigmented; hairs unaffected. male viability low. male-sterile RK3.