ScerGAL4GMR93G12 drives expression in the embryonic esophagus, in the developing foregut and hindgut, in midline glial cells, in the SNS, and in the brain lobes. At larval stages, ScerGAL4GMR93G12 drives expression in cells posterior to the proventriculus, in cell bodies in the anterior midgut, and possibly in the midbrain and imaginal rings.