Answer to the Monday Night Mystery

What were those magical mystery circles cut into leaf margins, and who made them?

As so many of you recognized, they were the marks of leafcutter bees, furry little insects that use the leaves to make nests for their young.

For their correct answers, MrILoveTheAnts gets 5 points, and James Trager gets five points. And Tonya & Hp each get a point for making me laugh.