Boreal Bluet damselflies are small, blue, damselflies that are more blue than black. The third abdominal segment is more than 50% blue. The black stripe on side of the thorax is not uniformly thick but is pinched in the middle.
These active creatures are harmless to humans, but they are voracious predators of small flying insects such as flies and mosquitoes. Vancouver Island has a large resident population of the Boreal Bluet Damselfly. You can see the Boreal Bluet from the arctic circle all the way to Mexico. From the Eastern seaboard to the Gulf of Mexico.