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Surprising finding

One surprising finding of The Pieris Project so far was the source of introduction to New Zealand. It seemed logical that Pieris rapae hitched a ride on one of the many trade ships that visited from the UK in the 1930s, when the population was established here. As it turns out, Pieris rapae hitched a ride on a ship from San Francisco! After arriving in New Zealand, a small population then quickly made its way over to Australia.