UASt regulatory sequences drive expression of an inverted repeat.
decreased body size | adult stage, with Scer\GAL4Ilp2.PR
decreased body size | larval stage, with Scer\GAL4btl.PU
decreased body size | pupal stage, with Scer\GAL4Ilp2.PR
lethal - all die before end of larval stage, with Scer\GAL4btl.PU