lighting bug
A firefly; the glowing bug kids chase in the yard after dark.
Also called lightning bug, firefly.
Updated September 24, 2026
lighting bug pronunciation
/LITE-ing bug/
Meaning
Lighting bug is the country name for those beetles that blink yellow-green over the pasture and the ditch at dusk. Same critter other folks call a firefly. In the South and Midwest, kids grow up hollering about lighting bugs, not fireflies. Mason jars, bare feet, and a yard full of little sparks.
How folks use it
- “The kids are out catching lighting bugs in a jar.”
- “Field was full of lighting bugs after that rain.”
Origin and etymology
Regional American name for the bioluminescent beetle most books call a firefly. Lightning bug is the usual spelling; lighting bug shows up as a spoken or written variant. DARE and later polls find lightning bug strongest in the South and Midwest, while firefly leads out West and in New England.
Frequently asked questions
Is lighting bug different from lightning bug?
Same bug. Lightning with an n is the spelling you'll see most. Lighting is how some folks say or write it.