“A very successful method of dragon-fly-catching..is to use a captured female dragon-fly as a decoy. One end of a long thread is fastened to the insect's tail, and the other end of the thread to a flexible rod. By moving the rod in a particular way the female can be kept circling on her wings at the full length of the thread; and a male is soon attracted. As soon as he clings to the female, a slight jerk of the rod will bring both insects into the angler's hand. With a single female for lure, it is easy to capture eight or ten males in succession”