Eyes reduced or absent, often asymmetrically; dorsal thorax anteriorally indented in midline with disarranged hairs and bristles. Penetrance good, viability and fertility somewhat depressed.
Hinton (1970) referred to this mutant as Dana\ey (eyeless); symbol preoccupied and changed to Dana\re indicating possible homology with re-b of D.melanogaster.
Hinton, 1970.