The Blue Dasher Dragonfly is a common resident around ponds, wetlands and marshes across North America. Males can be quite territorial, often chasing away other males and displaying their purple-blue abdomen. When at rest, the Blue Dasher sits with its abdomen sticking up. This fascinating insect is about 1-1.75 in/20-25 cm long and has a wingspan of 2.25-2.5 in/55-89 cm. The longipennis part of its scientific name means "long-winged."