National Geographic Chooses Wisconsin for Mayflies

July 19, 2008 By: Marshall Cutchin

After deciding that LaCrosse, Wisconsin is the epicenter for mayfly activity, National Geographic cinematographers are spending a few weeks shooting footage of the abundant insects for an upcoming film called “Planet In Motion.” But they are taking advantage of a remarkable fact: that mayflies in their basement studio will emerge on a schedule identical with their river-bound brethren.