bbc.co.uk navigation

Group of fireflies in a forest

Fireflies

Fireflies are best known for the enchanting light emitted from their abdomens. The yellows, greens and reds result from a chemical reaction known as bioluminescence, used to attract both mates and prey. Males flash at night and if a female is impressed by the display she will flash back. If she isn't, she remains hidden in the dark. There are 2,000 species of these winged beetles, found in damp meadows and marshes. If enough gather together, it's rumoured to be possible to read a book from their light. There are day-flying fireflies that don't produce light.

Scientific name: Lampyridae

Rank: Family

Common names:

  • Glow-worms,
  • Lightning bugs

Watch video clips from past programmes (1 clip)

In order to see this content you need to have an up-to-date version of Flash installed and Javascript turned on.

Distribution

The Fireflies can be found in a number of locations including: North America, South America, United Kingdom, Wales. Find out more about these places and what else lives there.

Explore this group

About

Lampyridae is a family of insects in the beetle order Coleoptera. They are winged beetles, and commonly called fireflies or lightning bugs for their conspicuous crepuscular use of bioluminescence to attract mates or prey. Fireflies produce a "cold light", with no infrared or ultraviolet frequencies. This chemically produced light from the lower abdomen may be yellow, green, or pale-red, with wavelengths from 510 to 670 nanometers.

About 2,000 species of firefly are found in temperate and tropical environments. Many are in marshes or in wet, wooded areas where their larvae have abundant sources of food. These larvae emit light and often are called "glowworms", in particular, in Eurasia. In the Americas, "glow worm" also refers to the related Phengodidae. In many species, both male and female fireflies have the ability to fly, but in some species, females are flightless.

Read more at Wikipedia

This entry is from Wikipedia, the user-contributed encyclopedia. If you find the content in the 'About' section factually incorrect, defamatory or highly offensive you can edit this article at Wikipedia. For more information on our use of Wikipedia please read our FAQ.

Elsewhere on the BBC

BBC © 2013 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.