These literally brilliant damselflies are generally found near slow-moving streams and rivers, but could rock up in your Otley garden, like one of those below. The male is metallic blue and the female metallic green. Damselflies differ from dragonflies in that they have identical wings that they hold up together at rest, whilst dragonflies have two differing sets which they hold open and down. Female Demoiselles lay their eggs by injecting them into plant stems below the surface of the water. The larvae take two years to develop, overwintering in the mud at the bottom of the water.