Do earthworms turn into lightning bugs?

That earthworms turn into lightning bugs or fireflies is a common myth in some sections of the United States. No doubt this curious belief arose from the fact that the lightning bug or firefly is a species of beetle that passes through a larva stage. Adults, larvae and eggs are all luminous. Observation of the various species of glowworms may have contributed to the popular belief. None of these luminous creatures are closely related to the common earthworm.