In the Philippines, people call fireflies alitaptap. When you walk near a river or a grassy field at night, seeing these small insects blink in the dark feels like magic. Because they are so mysterious, people have made up many stories about them over a long time. Let us look at four common beliefs about fireflies. We will check what people say, what is actually true, and how scientists know.
Belief One: Fireflies Are Actually Flying Stars
Many old stories around the world say that fireflies are tiny stars that fell down from the night sky to visit the ground. When children see bright lights floating above the grass, it is easy to imagine they dropped down from the clouds.
What is actually true: Fireflies are insects, not pieces of space rock or stars. They belong to the beetle family, known to scientists as Lampyridae. They spend most of their lives crawling around in the dirt and eating snails before they ever grow wings to fly.
How we know: Scientists study the bodies of fireflies up close. Under a microscope, you can see six legs, hard wing covers, and antennae. They are bugs, just like beetles and ants.
Belief Two: Every Firefly Flashes Its Light
People often think that all fireflies blink on and off to make patterns in the dark. If you picture a firefly, you probably picture a flashing light.
What is actually true: Not all fireflies flash. Some kinds of fireflies do not make any flashes at all. For example, the European Glow-worm glows with a steady, soft light instead of blinking on and off. People spot them glowing steadily in places like Tver in Russia, Dunakeszi in Hungary, and Ebensee in Austria.
How we know: Researchers and nature observers watch these insects carefully over many hours. They record whether the light pulses or stays steady. When people log sightings on maps like Alitaptap, they help show which bugs flash and which ones just glow.
Belief Three: Fireflies Only Come Out During Warm Summer Nights
Lots of books and movies show fireflies only during hot July evenings when children are out on summer break.
What is actually true: Fireflies can be found active in other seasons too. In late October, people still spot them in many places. The Winter Firefly comes out when the weather turns chilly. Observers have recently logged Winter Fireflies in places like Voorheesville in New York, Apsley in Canada, and Concord in North Carolina.
How we know: Citizen science projects collect observations from all over the world every single day. When someone takes a photo of a Winter Firefly in October and shares the date and location, it proves that these insects do not just vanish when summer ends.
Belief Four: Fireflies Make Light That Gets Hot
Because fireflies shine so brightly, people sometimes think their tails must get very hot, just like a tiny light bulb or a candle flame.
What is actually true: Firefly light is cold light. It does not waste energy making heat. If it made heat, the firefly would burn itself up.
How we know: Chemists and biologists study the special chemicals inside a firefly's tail, called luciferin and luciferase. When these chemicals mix with oxygen inside the insect's body, they create light without heat. Scientists can measure the temperature of the light and prove it stays cool.
Next time you see an alitaptap or look at a map of firefly sightings, you will know the real science behind the glow.