Phenotype is much more extreme than saw1. Wings are strongly warped up or down and are papery in texture, especially in the female. Hairs along the wing edges are arranged so that the edge appears serrated (looking like the teeth of a saw). Viability is much reduced; the flies become stuck in the food due to the warped wings.
RK2.
Edmondson, June 1951.
Edmondson, June 1951