Axons of the ocellar and postvertical mechanoreceptors leave the epidermal surface and associate with the ocellar pioneer nerve in 50% of pupae expressing Nrt^Scer\UAS.cSa under the control of Scer\GAL4^Mz1407 in an Nrt⁵ background. Wing vein sensilla frequently have axons that turn back toward axons of the triple row, creating a loop that prevents both types of axons from leaving the wing in the direction of the central nervous system. Axons of the ocellar and postvertical mechanoreceptors leave the epidermal surface and associate with the ocellar pioneer nerve in 53% of pupae expressing Nrt^Scer\UAS.cSa under the control of Scer\GAL4^sca-537.4 in an Nrt⁵ background. In 16% of pupae before head eversion both sides of the head capsule come closer together than normal due to a fold along the midline of the head. Wing vein sensilla frequently have axons that turn back toward axons of the triple row, creating a loop that prevents both types of axons from leaving the wing in the direction of the central nervous system.