Associated with a complex translocation.
Hemizygous males have small, slightly wrinkled wings which are held out at an angle of about 45o from the body. The postscutellar bristles are slightly erect. Heterozygous females have slightly shorter wings than normal which are curved down over the tip of the abdomen.
Allelic to m1.
Induced in: an In(1)scS1Lsc8R+S stock.