The Green Dragontail Butterfly (Lamproptera meges) is a species of swallowtail butterfly found across Southeast Asia. The butterfly is known for its long, white-tipped tail, transparent forewings, and its quick and erratic flight patterns.
Video credit: Kazuo Unno
Source: https://www.goo.ne.jp/green/life/unno/movie/movie.html?movieid=1340715995