40% eclosion rate. In addition to 100% penetrant defects in leg wing and thorax, rough patches in the eye appear at low frequency. Anterior crossvein is displaced posteriorly.
RK1 as heterozygous dominant RK3 as homozygote. Heterozygote has uniformly widely spaced posterior scutellar bristles; wings a bit short and blunt; crossveins close together. Homozygote resembles dsd and dsd2 with viability 40% wild type. homozygous viable
Although originally described as a dominant mutation, a dominant effect is no longer detectable.