<P> Fireflies hibernate over winter during the larval stage , some species for several years . Some do this by burrowing underground , while others find places on or under the bark of trees . They emerge in the spring . After several weeks of feeding on other insects , snails , and worms , they pupate for 1.0 to 2.5 weeks and emerge as adults . The larvae of most species are specialized predators and feed on other larvae , terrestrial snails , and slugs . Some are so specialized that they have grooved mandibles that deliver digestive fluids directly to their prey . Adult diet varies : some are predatory , while others feed on plant pollen or nectar . Some , like the European glow - worm beetle , Lampyris noctiluca , have no mouth . </P>
where do lightning bugs go in the winter time
Fireflies hibernate over winter during the larval stage