What do fireflies eat?

Fireflies are not flies at all, but they are kinds of beetles. They are also called lightning bugs. Firefly eggs hatch into little wormlike creatures called larvae. Some kinds of larvae glow in the dark, and those that do are called glowworms. The glowworms eat very small creatures such as other insects, snails, and slugs. Some adult fireflies also eat other insects. Some eat pollen and other flower parts, and some probably do not eat anything at all.

It is fun to capture several fireflies and watch them make their lights. The light of each firefly blinks on and off, but if there are several in a jar, some of their lights will be flashing most of the time.