For approximately two weeks on the waning edge of spring, “Snappy Sync” lightning bugs (Photuris frontalis) synchronize their bioluminescent mating signals like a silent rave in Congaree Creek Heritage Preserve in Cayce. These frisky flying beetles begin to emerge from the leaf litter looking for mates around dusk. Within the hour they are moving in and out of phase, initially in small groups, but under the right conditions they pulse together across large sections of forest before rising high into the tree canopy. By about 10 p.m., the congregation begins to disperse.

Most folks are surely familiar with the now well-documented natural occurrence out at our local Congaree National Park just down river, but the species and their display can be found wherever mature bottomland forests still remain. The state Department of Natural Resources’ foresight in preserving the Congaree Creek habitat means Lexington County residents can stay on the west side of the river to experience the phenomenon, among many other treats the preserve has to offer. 

However, before you douse yourself with bug spray and load the family in the car, it should be noted that DNR heritage preserves are closed from sunset to sunrise. This isn’t a guided experience with staff and interpreters such as it is at Congaree National Park. Intrepid folks will also notice the steel manufacturer and water treatment plant that flood light across the recently cut commercial timber that surrounds the preserve. And with any wild space there are risks, especially in the dark of night. Tread respectfully and the wilderness will reward you.

If anything, this photographer would encourage interested folks to engage with local and state authorities such as the City of Cayce and DNR to learn more about these wild spaces and their importance to our communities. After all, what’s good for frisky flying beetles is ultimately what’s good for the curious great apes who marvel at them.