Df(3L)Pc-MK/Df(3L)Pc-cp2 animals carrying PctPa develop into normal looking larvae which fail to hatch. Larvae removed from the vitelline membrane are immobile, but respond to pokes from a needle with slow, uncoordinated movements. The larval muscle pattern is indistinguishable from wild-type. The SNb nerve ends at muscle VO1, failing to innervate the VL1 muscles. RP3 motor axons fail to innervate muscle VL3 and VL4.