Welsh dragon

Close to the place we were staying in Wales there was a little pond which apparently held a few different sorts of dragonflies. Over the few days that we were there I only saw one sort, the Southern Hawker and they were always in flight, never settled. I did, however mange to find a couple of empty larvae shells and on one occasion I saw what I assume is a Southern Hawker in a state of emergence.

Reminds me of Alien.