CycE5L is a deletion generated by imprecise excision of P{PZ}CycE05278 (within the first intron of the Type II, maternal, CycE transcript) similar to those generated in FBrf0129877. The deletion is larger than the deletion in CycE7L (FBal0119677) but likely smaller than that in CycE19L (FBal0119678). CycE5L causes a regulatory mutation resulting in decreased transcription of CycE in the anterior, posterior and hind gut of the embryo.