Wings are short and very broad, and the longitudinal veins frequently fail to reach the wing margin and are often divergent. Eyes are large and slightly rough. Head bristles are reduced in number; ocellar bristles are most often affected. The thorax is broad, one or more macrochaetae are occasionally absent and microchaetae are more widely separated than normal. Male viability is approximately 40% of wild-type.

Wings short and very broad; longitudinal veins frequently do not reach wing margin and often diverge. Eyes large and slightly rough. Head bristles reduced in number (ocellars most frequently affected). Thorax broad, one or more bristles occasionally absent; hairs more widely separated, with noticeable hairless areas. Males sterile. Viability 40% wild type. RK3.