The dominant Sp phenotype is almost completely suppressed, 10% of individuals exhibit a mild Sp phenotype. Individuals in combination with wgSp-1, wgspd-j2, wgP and wgl-16 are pupal lethal. Individuals are adult viable and exhibit the wing phenotype when in combination with wg1. When in combination with wgl-17 individuals are pupal lethal, pharate escapers lack antennae, legs and anterior dorsocentrals.