The dragonhunter (Hagenius brevistylus) is a clubtail dragonfly of the eastern United States and southeastern Canada.

The dragonfly is much larger than any other North American clubtail, at 3.3 inches (84 mm), with black and yellow markings and green eyes.

Males can be distinguished at a distance by their habit of curling their abdomens under while flying, forming a sideways J shape.

It is slow-moving and lives among bark and leaf litter at the edges of streams, where its dark color provides camouflage.

[3][4] It also takes monarch butterflies, eating the thorax and abdomen first to avoid the greatest concentration of cardenolide toxins.