Coenagrion is a genus of damselflies in the family Coenagrionidae,[2]commonly called the Eurasian Bluets (although three species are found in North America: Coenagrion angulatum, Coenagrion interrogatum, and Coenagrion resolutum[3]). Species of Coenagrion are generally medium-sized, brightly coloured damselflies.[4]
This genus's capacity for phenotypically plastic responses to the surface air temperature is important to species' ranges.[13] These thermal responses will also decide a great deal of these species' responses to climate change.[13] Nilsson-Örtman et al., 2012 find a high degree of thermal adaptation in high latitude populations of Coenagrion.[13] They found similar plasticity even for various sympatric species at the same locations, and despite the highly variable weather at such latitudes.[13]