Friends of Kootenay Blog

Access stories and photos about the natural and human history of Kootenay National Park and Columbia Valley Includes highlights about the Friends of Kootenay National Park activities and programs.

 

Alien Looking Pink Balls

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Cynipid wasps create these “alien looking” spiked ball on wild rose leaves
- by Larry Halverson

These spiny pink balls are the result of wasp laying eggs inside the leaf. A chemical reaction causes the leaf to mutate protecting the wasp larva and allowing it to grow safely inside.