ナショナルジオグラフィックのインスタグラム(natgeo) - 7月18日 11時02分

photo by @salvarezphoto (Stephen Alvarez) They are known by many names, big Dipper firefly, common eastern firefly, here on the Cumberland Plateau they are called Lightning Bugs. Photinus pyralis are the most common species of firefly in North America. Their distinctive light is a mating ritual, a way for lonely insects to find each other. They rise from the forest floor at dusk in a swarm of phosphorescence, searching for mates. They quickly pair up and the forest fades to darkness. Check out @salvarezphoto for more.  #firefly #lightningbug #tennessee

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