Phenomenal Fireflies - Alex Wild Photography
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When a female Photinus pyralis firefly spots a male's signal, she signals back with a quick flash.

Urbana, Illinois, USA

When a female Photinus pyralis firefly spots a male's signal, she signals back with a quick flash. Urbana, Illinois, USA

Photinus pyralisLampyridaeFireflyBioluminescenceLightning buginsectsbiochemistryvisual communication