lightning bug 
noun
North American term for firefly.I've thought that fire ants had killed off most of the lightning bugs like they have the horned toads....
- The favorite ‘hangouts’ of lightning bugs are east of the Rocky Mountains and away from city lights.
- This is a rare phenomenon in which the lightning bugs in an area flash in unison.
- power steering
- power strip
- power stroke
- power structure
- power struggle
- power suit
- power-suited
- power supply
- power surge
- power system
- power take-off
- power tie
- power tool
- power-to-weight ratio
- power tower
- power train
- power transformer
- power transistor
- power trio
- power trip
- power-tripping
- power tube
- power unit
- power-up
- power user