Adult expression is observed in two cells at the tip of the prothoracic leg.
Ablation of Scer\GAL4Gr22c.PD-expressing neurons does not affect sensitivity to (S,Z,Z)-CH503 (a more potent stereoisomer of the gustatory sex pheromone CH503). As in wild type flies, courtship defects are seen in response to (S,Z,Z)-CH503.