Mexican Jumping Beans Are Found Only In A Small Area Of Mexico, Where A Jumping Bean Is Known As A Brincador ~ Or "Hopper". In The Spring, The Female Jumping Bean Moth Lays Eggs On The Blooming Flowers Of The (Sebastiana Pavoniana) Trees. Several Weeks Later The Eggs Hatch, And The Very Small Worm Insect Eats Into The Small Pod Or "Bean" Of The Host Flower. The Pod Or "Bean" Will Fall To The Ground And The Pods That Have A Moth Larva Living Inside Will Begin To Jump And Bounce Around On The Ground. Jumping Beans Jump As A Way Of Surviving. This Enables Them To Bounce To A Cooler Place To Avoid The Heat And The Sun. Eventually, After Several Months, The Larva Will Start To Spin A Cocoon Inside The Pod. After This Stage, Metamorphosis Will Occur, And A Jumping Bean Moth Will Emerge From The Pod Through A Small Hole. Incredible!

source: http://www.amazingbeans.com