Yay, another day of not-shells, and more to follow! This stitch looked quite intriguing in the book, but unfortunately fell flat in my rendition. In fact, my square looks almost nothing like the picture in the book, and the only recognizable element between the two is the columns of posts on the front, and the book's are much less pronounced than mine. Perhaps the name of this stitch refers to the possible crude dragonflies or butterflies that the stitch creates? Alas, we may never know.
I used Red Heart Super Saver White with a J hook.