Form: They are 28~32mm sized. They go through the season ‘winter’ in brown, but in spring when they prepare mating they become blue. In other words, they have a protective coloration in winter and a nuptial coloration in spring.
Other characters: Most of them live in forests. They appear from April to November. They act as an imago like “Sympecma paedisca (Brauer)”, and they experience “incomplete metamorphosis“. In Dongbaekdongsan(Gotzawal in Jeju), you can see them at the wetland “Meonmulkak”‘s surface. Damselflies including this dragonfly tend to hunt near water, so as soon as you arrive in Meonmulkak, you can see them immediately.