KELLETTVILLE, Pa. ― Every year in late June, Peggy Butler and her husband, Ken, welcome visitors to rural northwestern Pennsylvania for the chance to glimpse the rare and beguiling Photinus carolinus.

Fireflies can bring magic to summer nights — blinking in yards and putting on light shows in fields. But a study by a team that includes researchers from Penn State found that while fireflies' overall ...

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It’s not easy counting fireflies. Across North America, there are an estimated 170 fireflies species, which are technically beetles in the order Coleoptera, but inventorying them is a challenge. While ...

With the arrival of summer, many recalling childhood memories of watching fireflies blink across a dark landscape might be wondering, where did all the lightning bugs go? According to the Xerces ...

Light fades from the summer sky, and the spectacular light show put on by thousands of fireflies begins. While these remarkable bioluminescent insects have inspired poets and delighted children for ...

Those floating incandescent insects that are harmless, only come out during a short period in the summer, and are known by ...