Body colour: flies have slight excess melanisation, particularly noticeable in the scutellum. Eye colour: browner than normal, dull. Expression is best seen immediately after eclosion. Eyes are occasionally misshapen. Males and females are fertile, with approximately 50% wild-type viability.
Body colour: slightly dark; darkened scutellum particularly noticeable. Eye colour: brownish (best detected immediately after eclosion). Eyes occasionally misshapen. Viability about 50% wild type.
Complements: s1.