Erythemis simplicicollis

Erythemis simplicicollis, the eastern pondhawk or common pondhawk, is a dragonfly of the family Libellulidae that lives around ponds and other still waters in the eastern two thirds of the United States, southern Ontario and Quebec, the Bahamas, the West Indies, Mexico and Central America as far south as Costa Rica. The female is bright green with a banded abdomen, while the mature male turns from green to blue and finally a powdery bluish-grey, with a green face. Adults are 36 to 48 millimetres long and have wings with dark margins near the tips. It is a fast, athletic predator that catches damselflies and other insects in flight. Males defend floating algal mats where females lay eggs, and the species is widespread and abundant.