Males call for females with ultrasonic sound pulses that attract virgin females and initiate courtship Once females get closer, males produce a sex pheromone to initiate mating. There are many known kinds of sex pheromone including nonanal, decanal, hexanal, heptanal, undecanal, 6,10,14 trimethylpentacanol-2 and 5,11-dimethylpentacosane. It is also known that these pheromones are often used to create traps to attract females. However, as traps baited with these pheromones do not attract virgin females over long distances, acoustics have to be used to draw females in first.
