Embryos exhibit a ventral cuticle phenotype.
Lethal when in homozygous or heterozygous combination with hhA, hhAC, hhAE or hhAM.
At 25oC naked cuticle is absent between most denticle belts of almost all segments. In a su(wa) background at 25oC denticle bands are of normal morphology and the corresponding regions of naked cuticle. In a su(wa) background at 18oC the regions of naked cuticle are larger.
Weak phenotype. Mutant embryos show fusions that delete the naked cuticle usually between abdominal segments 1 and 2 and 6, 7 and 8.