Ynghylch

Previously known as the Club-tailed Dragonfly, the Common clubtail is a medium-sized dragonfly on the wing from early May to July. It is elusive as an adult, mostly seen on emergence from its riverine habitat. Meandering rivers with silty substrates over a rocky bed are favoured by the burrowing larvae. Adults have a tightly synchronised emergence, with dense concentrations being found at favoured sites. Once emerged, adults quickly move away from the river to woodland up to 10km away, where they spend most of their time in the canopy of trees.