Emerald damselflies mating

The blueish is the male and the greenish the female.

L. sponsa mate in the usual dragonfly manner and will form tandem pairs away from water. Copulation lasts from 30–60 minutes and after mating they stay paired for egg-laying. The female usually lays eggs in submerged vegetation and whilst egg-laying the female can remain submerged for 30 min.
The female pierces the tissue of aquatic plants and inserts her eggs. Occasionally females lay their eggs in vegetation above the water surface in places that will become submerged when the water level rises. The eggs start to develop and will continue to develop for the next few weeks. Then due to changing environmental conditions the development of the eggs slows down. In this state of slow development, called diapause the eggs overwinter.