A set of transgenic insertion stocks derived by TE mobilization using the P-element construct P{GSV2}. The P{GSV2} construct construct carries a w+mC mini-white visible marker; it carries Scer\UAS binding sites for the Scer\GAL4 transcriptional regulator plus a core promoter adjacent to one terminus and oriented to direct transcription outward. The GAL4-UAS system allows regulated expression of genes proximate to the site of the insertion: genes properly oriented with respect to the Scer\UAS sequences can be conditionally expressed via transgene-derived Scer\GAL4 activity.