I’m always happy to see dragonflies at our lake home in northern Minnesota, where all these photos were taken, because they are fierce predators of mosquitos and deer flies. This is an adult male Chalk-fronted Corporal. His field marks include a mostly black body, white “corporal stripes” behind his head, a white area in the middle of his abdomen, and mostly clear wings. These insects average 1.6 inches long. Their preferred hunting technique is to sit on the ground or a rock and then chase a potential victim when it flies over. They are very social insects and we often see a dozen or more of them perched on a large rock in our front yard.