Mega congregation of the insects and their synchronised bioluminescence is observed during summer every year in the Anamalai Tiger Reserve, Tamil Nadu.
The researchers recorded the flashing patterns of fireflies (whether ascending or descending) in individual trees and the timing of flashing events.
They analysed their synchronisation phenomenon.
They also observed mating behaviours such as rapid pulsations and the duration of flashing sequences.
Three species of fireflies — Asymmetrica humeralis, Abscondita genus (species unknown) and Curtos sp — were identified from the ATR.