Like, say they have a lifespan of a week. If they die out in winter because of lack of food or cold temperatures, how come we see them again in the spring? Where do they come from?
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Week long lifespan is only for adult bugs. They either lay eggs that either survive the winter or their eggs incubate into larva (like caterpillars) or nymph (basically a “baby insect”) that digs underground and hibernates during the winter. Cicadas, for example, can live for several years in this stage, only to reach adult form, emerge, breed and then die within weeks.
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