The role of Dragonflies for the sustainability of ecosystems is enormous, one of them being a predator for several pests. His life as a predator from nymph to adulthood, controls other insect populations. The role played by dragonflies creates a balance in the ecosystem. Besides that there are other benefits that can be felt directly by humans. When the Dragonflies are nymphs, the role is as a predator of mosquito larvae, so the number of mosquito populations in nature can be reduced. After growing adult dragonfly to help farmers in the fight against agricultural pest insects such as aphis, fruit flies, lice, and other insect pests.