League of the DragonTree — Shon M. Shaffer

Courage... Teamwork... Trust...
All of these things will be necessary to nine newly emerged rebellious dragonflies who are determined to honor the beliefs and traditions of their kind, and yet live differently from all of those who came before. The choices they make will spare them from lives of solitude, loneliness and boredom and propel them into the adventure of a lifetime. However, adventures aren't always what they seem on the surface; much like unknown watery depths, they can be unpredictable, contain capricious currents and dark unexplored places.
The lives of these young adventurers will be changed forever as what is new emerges as the old passes away. What they become my ultimately save their lives and the world they love from a terrible invader.