Mouth hook material is in a position posterior to wild type and rarely possess maxillary cirri: defects in structures derived from the maxillary, mandibular and premandibular regions of the embryonic head.

Eyes smaller and more constantly kidney shaped than in Dfd^r. Wings thin, dull, uneven, slightly spread (about 60^o from body axis), and drooping. Body slightly smaller and lighter colored than normal. Bristles shortened and delicate. Last abdominal segment of male may be rotated. Viability low. Dfd^r2/Dfd^r slightly more extreme than Dfd^r/Dfd^r. RK2.