Veins heavy, confluent and dilated at junctions; strong deltas at tips. Wings spread wide; margins and tips snipped and nicked. Ocelli sometimes fused with disturbance of hairs and bristles in the region. Acrostichals irregular. Male sterile. Less abnormal phenotype and fertile with Su(dx) mutants. RK2.
Su(dx)1, dxst has male fertile phenotype
Bridges, 3rd Jan. 1931.