The following information accompanied stocks donated to the Bloomington Stock Center by Nailah Orr, Dow Agrosciences, Indianapolis, IN. nAcRalpha-30DDAS1 and nAcRalpha-30DDAS2 are homozygous viable and fertile, EMS-induced mutations, which confer resistance to the insecticide spinosad. These mutations have been described in conference presentations under the gene synonym "resistance to spinosyn" (rsn).