Eye colour: wild-type at 25oC; frequently homogeneous brownish shade in young flies at 16oC. Eye colour: like Pu1, with Pu1. Heterozygous with Pu1 viable but sterile; eye color like Pu1/+; often wings are opaque, bristles thin, trident dark, and eyes rough, dark, and sometimes variegated. RK3A.