Phenomenal Fireflies - Alex Wild Photography
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Prior to his evening flight, a male Photinus pyralis big dipper firefly tests his flash with a quick pulse.

Urbana, Illinois, USA

Prior to his evening flight, a male Photinus pyralis big dipper firefly tests his flash with a quick pulse. Urbana, Illinois, USA

FireflyPhotinus pyralisLampyridaeBioluminescencelightning bug