Video recording of the collective display of Photuris frontalis fireflies

Photuris frontalis fireflies are known for their synchronous flashing when
swarming in large numbers. Here, we provide a continuous, high-resolution
video recording of their collective display. This recording was obtained
at Congaree National Park, South Carolina, USA, on May 23, 2021, in the
fireflies' natural habitat. It started at 8:38 pm EDT and continued
for about 130 min without human interference. The flashes seen in the
video appear usually synchronous, and at times produce more complex
patterns akin to the mathematical phenomenon known as "chimera
state".