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".