In early pupal development, expression is observed in most, but not all, olfactory neurons, particularly in early projecting olfactory neurons.
Adult expression reveals that olfactory neuron sensory arbors are located in a `doughnut-like' arrangement on the periphery of the glomerulus.
Pupal expression is observed in cells with bipolar morphology typical of olfactory neurons. Adult expression is observed in the outer nerve layer of the antennal lobes, and in many antennal glomeruli.
Expression is observed in a majority of sensory neurons plus a subset of neurons in the central nervous system in larvae and adults.
Adult expression is observed in olfactory sensory neurons of the third antennal segment, with stronger expression in the coeloconic and trichoid sense organs.
Larval expression is observed in a ring pattern on the leg disc, in the dorsal and ventral wing blade region of the wing disc, and in the dorsal and ventral surfaces of the haltere disc. In the third instar, expression is observed in clusters of cells in presumptive antennal segment 3, and in the maxillary palpus region. Pupal expression observed in antennal sensory neurons and in the antennal nerve. Adult expression is observed in the olfactory receptors and the CNS processing centers of the olfactory receptors, specifically in sensory neurons of antennal segment 3 and the maxillary palpus, afferents from those sensilla projecting into the antennal lobe, their interneurons, relay interneurons from the antennal glomeruli to the calyx of the mushroom body, and the calyx of the mushroom body.