The Pennsylvania Firefly Festival festival celebrates the annual mating displays of over fifteen different species of firefly in the Allegheny National Forest area including the Synchronous firefly and the unique "Chinese Lantern" firefly along the Tionesta Creek.
The P. carolinus is unique in that its flash patterns are in synchrony with each other, so they appear to be a string of Christmas lights hanging in the forest. Other witnesses have likened it to camera flash bulbs at a sporting event. The only other confirmed habitat in North America is in the Great Smoky Mountains National Park in Tennessee.
Photo above courtesy Radim Schreiber. See more of his work HERE.