Shows a mild multiple wing hair phenotype with fy6. The hairs on the scutellum point anteriorly, and thorax microchaetae are routinely split. On the leg, hair polarity is abnormal, and more multiple leg hairs are found than in fz1 mutants. Mispositioned bracts are not a feature of the phenotype, though bracts may be multiplied. Joint duplications are rare.
The pupal wing cells of homozygotes produce multiple prehairs.
Hairs on abdomen and thorax irregular and directed toward midline. Hairs on wing margins erect. Hairs on legs also show abnormal polarities (Held, Duarte, and Derakhshanian, 1986). Resembles fz. Fertility and viability below normal. RK2.