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Like all beetles, the firefly cycles through a complete metamorphosis—hatching from its egg as a crawling larva before pupating into a mature adult.

“I’m convinced he went through a complete metamorphosis,” retired Army Gen. Jack Keane told the Los Angeles Times in 2008.

But her co-workers told her to expect “a complete metamorphosis when the sun went down.”

As Maria discovered, all butterflies and moths undergo complete metamorphosis, which means they move through four very different phases: egg, larva, pupa, and adult.

So many species with such a wide range of incomplete to complete metamorphosis!