Lethality occurs during larval and pupal stages. Adult escapers are sterile and exhibit the Minute phenotype. l(2)37Cc6/Df(2L)TW130 hemizygotes have unexpanded held down wings, incompletely sclerotized thoracic cuticle and Minute bristles at 18-25oC.
Flies have unexpanded wings, the posterior half of which is heavily melanised.
Wright.