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Fireflies or lightning bugs use specific flash patterns to signal potential mates. Their glow also lets predators know that they taste bad.

Firefly - Wikipedia

en.wikipedia.org/wiki/Firefly

The Lampyridae are a family of insects in the beetle order Coleoptera. They are winged beetles, commonly called fireflies or lightning bugs for their conspicuous use of bioluminescence during twilig...

Why fireflies light up | Earth | EarthSky

earthsky.org/earth/bugs-firefly-light

Jun 3, 2016 ... Bottom line: Why do fireflies light up? It's because of a chemical reaction between an organic compound in the fireflies' abdomens – called ...

How and why do fireflies light up? - Scientific American

www.scientificamerican.com/article/how-and-why-do-fireflies/

Fireflies produce a chemical reaction inside their bodies that allows them to light up. This type of light production is called bioluminescence. The method by ...

How do fireflies light up? | HowStuffWorks

animals.howstuffworks.com/insects/question554.htm

Fireflies or lightning bugs make light within their bodies. This process is called bioluminescence and is shared by many other organisms, mostly sea-living or ...

Why do fireflies glow? | MNN - Mother Nature Network

www.mnn.com/earth-matters/animals/stories/why-do-fireflies-glow

May 7, 2013 ... So how do fireflies glow? Turns out it's not quite so magical after all, since it's the product of a complex chemical reaction going on inside their ...

How Do Fireflies Glow? Mystery Solved After 60 Years - Latest Stories

news.nationalgeographic.com/2015/07/150724-fireflies-glow-bugs-summer-nation-science/

Jul 24, 2015 ... Scientists have sussed out the chemical secret of these bright summertime beetles—and it may someday improve human health, a new study ...

Fireflies! 12 things you didn't know about lightning bugs | MNN ...

www.mnn.com/earth-matters/animals/stories/fireflies-12-things-you-didnt-know-about-lightning-bugs

Jun 25, 2014 ... Actually, let us restate that: it doesn't have fireflies that light up. ... Well maybe not the whole spectrum, but they do come in yellow, light red, ...

Facts About Fireflies and Lightning Bugs in the US and Worldwide ...

www.firefly.org/facts-about-fireflies.html

In some firefly species, only one sex lights up. In most, however, both sexes glow; often the male will fly, while females will wait in trees, shrubs and grasses to ...

How Do Fireflies Glow? | Wonderopolis

wonderopolis.org/wonder/how-do-fireflies-glow

So why do fireflies spend so much time flipping the lights on and off? Fireflies are born knowing how to glow as larvae. Some people call them “glow worms.".