Actual research deals mainly with ultrasounds, whose role is mostly unknown.
Spectral and temporal analyses were then performed to reveal the structure and the temporal patterning of the signals. Research on moth courtship behaviour has focused primarily on female pheromones and male behavioural responses to them. Several studies have demonstrated that the complete sequence of courtship behaviour also involves male pheromones and other types of communication, including sound production. Sounds produced by these moths consist of regular sequences of ultrasonic pulses with a frequency range up to 80 kHz, emitted by wing-fanning males during courtship behaviour. Ultrasonic communication in these moths plays a significant role in mating behaviour.