No embryonic expression.In the leg imaginal disc there is a very small spot of expression at the very center of the disc.In the haltere imaginal disc there are 2-3 very small spots of expressionalong the A/P border, including one at the center of the disc.In the wing imaginal disc there are numerous small spots of expression oneither side of the D/V border. May include some of the regions where SMC'sarise, but does not appear to be restricted to the regions where the SMCsarise.In the eye/imaginal disc there is a very small spot of expression at theposterior end of the antennal portion of the disc.