The Southern Damselfly (Coenagrion mercuriale) is a medium-sized insect in the Coenagrionidae family of damselflies which are similar to dragonflies. It is also known as the Mercury Bluet.
The Southern Damselfly has a long, cylindrical, slender abdomen with ten segments. The male is bright blue with black markings. The female is less colourful. It has a mark on the second segment of its abdomen that resembles the symbol for the planet Mercury. It has forewings and hindwings which are similar in appearance and are membranous. It has compound eyes (like the eyes of house flies) and three simple eyes (ocelli) on its forehead. It has small antennae.
The joint between its head and prothorax is flexible, which enables the damselfly to swivel its head.Continue reading “Southern Damselfly”