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Common Brimstone (Gonepterix rhamni), Nissedal, Southern Norway
G. rhamni is one of the longest lived butterflies, living up to thirteen months, although most of this time is spent in hibernation. As it is often the first butterfly to be seen in the spring, sometimes as early as January when hibernating adults are awoken on a sunny day, there is a popular myth that it is this butterfly which gave us the word butterfly, a corruption of butter-coloured fly.