A 580bp indirect flight muscle specific enhancer region (the "F3-580" fragment) from upstream of Mhc (nucleotides -5165 to -4586 relative to the transcription start site) is fused upstream of sequence encoding a GAL4 driver.
Drives expression in muscle at all developmental stages.
ScerGAL4Mhc.F3-580 drives expression in the indirect flight muscles from 40 hr APF.