Don’t squish these ones!

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These caterpillars, photographed near Wainwright Alberta, are the larvae of the Spurge Hawk-Moth, and only eat spurge. In this case, leafy spurge. They were first introduced from Eastern Europe all over North America in 1965 for control of the noxious weed. Although they are rarely introduced anymore, there are still some strong populations scattered throughout western Canada.

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