Wings reduced; may have tendency to be halterelike. Duplications of the notum as well as the costa and ventral hinge of the wing accompanied by deficiencies for the rest of the wing; outgrowths from wing formed by duplications of the costa. Little cell death in third larval instar. Expression variable; overlaps wild type; enhanced by oss. Penetrance temperature-sensitive (0-1% at 29oC, 35% at 15oC). RK3.
No evidence for wing to haltere transformation is observed.
Goldschmidt.