Expression in procephalic neuroblasts stage 9-11: tritocerebrum - d3, d5, v4, v5; deuterocerebrum - d1-3, d5-9, d11-13, v3, v5, v6, v8; protocerebrum - pd2, pd5, pd8, pd10, pd11, pd15, pd16, pd18, pd20, pv2
hh reporter gene expression is detected in a stripe in the neuroectoderm of the intercalary procephalic segment. A broad zone of expression is detected throughout the antennal segment and the posterior of the ocular segment. All neuroblasts that are derived from this zone also express hh.