Hemizygotes generally form morphologically normal pharate adults that fail to eclose and appear grey due to a failure to develop the brown coloration typical of sclerotinised cuticle. 4% of hemizygotes, 3% of l(2)37Cd¹/l(2)37Cd⁵ and 22% of l(2)37Cd⁵/l(2)37Cd⁸ animals eclose, giving rise to adults which are smaller than normal, have a lighter body colour than normal, have thin bristles, a flattened dorsal side of the abdomen and incompletely sclerotinised wings which have delicate wavy edges. Females appear to have a foreshortened abdomen. l(2)37Cd⁵/l(2)37Cd⁸ and l(2)37Cd⁵/l(2)37Cd¹ females are sterile.