D.melanogaster ewg sequence from downstream of the site of the deletion in ewgtcgERΔ7.elav.Tag:HA,Tag:VSV-G has been replaced with the equivalent D.virilis ewg sequence.
ewg::Dvir\ewgtcgERΔ7v.elav.T:Ivir\HA1,T:VSV\G rescues the lethality of ewg2 mutants.