RK2. Adults have small, egg-shaped, rough eyes. Wings are outspread or upheld to various degrees, and the edge is etched away (especially at the inner margin). Emergence is slightly delayed. Male viability is 20-60% of wild-type.
Eyes small, egg shaped and rough. Wings spread or elevated to varying degrees; edges incised, especially inner margin. Eclosion slightly delayed. Viability 20-60% wild type. male-sterile RK2.