Those floating incandescent insects that are harmless, only come out during a short period in the summer, and are known by many names—most commonly either lightning bugs or fireflies.

“Fireflies tend to be heavily dependent on moisture, and they love humid nights after a rain,” said Hetherington. What's the ...

There are threats to fireflies as well ... The name firefly, lightning bug or glow worm can be interchanged and belongs to the beetle family of which there are more than 2,000.