Metabolizes pyrethroid insecticides and other xenobiotics. No expression in eggs nor day 1 pupae, yet it is readily detectable in larvae and adults. By phenobarbital in susceptible CS (16-fold) and in the LPR (1.6-fold) strains. Alleles from the pyrethroid-susceptible strains CS (CYP6D1v2) (shown here) and Edinburgh (CYP6D1v1), and two alleles from the pyrethroid-resistant strains LPR (CYP6D1v3) and YPER (CYP6D1v4) are described here. Expressed at higher levels in LPR compared to susceptible flies. Belongs to the cytochrome P450 family.