Plays an olfactory role that is not restricted to pheromone sensitivity. Localizes to both male and female antennae but not the leg, wing, gut, head or thoracic ganglia. Detected throughout the sensory epithelium, associating with both sex-pheromone sensilla and plant-volatile sensilla. Differentially expressed among different sensilla and different neurons within a given sensillum. Belongs to the CD36 family.