Heterozygotes show medium to strong thickening of vein L2, the posterior crossvein and L5 from the posterior crossvein to the wing. Deltas are variably formed. There is a weak eye effect.
Delta58a17 has visible | dominant phenotype, suppressible by H12/H[+]
Delta58a17 has wing vein L2 phenotype, suppressible by H12/H[+]
Delta58a17 has posterior crossvein phenotype, suppressible by H12/H[+]
Delta58a17 has wing vein L5 phenotype, suppressible by H12/H[+]
Thickening of L2 and the posterior crossvein-L5 junction is partially suppressed by H12.
Allelism to Dl based on only small crossover counts with nearby markers and on the phenotype.