Dragonfly - Macro Photography

A couple of weeks ago, while harvesting groundnut, I stumbled upon this creature. It is a dragonfly with blue color and transparent wings. It came perching on the harvested groundnut leaves. Since the leaves were still fresh, I noticed it was chewing it.

This is my first time of coming across this animal eating a groundnut leave. It is obvious they are among those pests that destroy crops in the farm but I don't think their damages is severe when compared with grasshoppers.