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Size: Butterflies come in a variety of sizes. The world’s smallest known species, the blue pygmy found in southern California, has a wingspan of just over half an inch. The largest species, New Guinea’s Queen Alexandra's birdwing, can measure up to twelve inches from wingtip to wingtip.
Lifespan: The average lifespan for an adult butterfly is 20 to 40 days. Some species live no longer than three or four days; others may live up to six months.