翅の表面は濃い青色と黒色を帯びており、翅には白い縁取りがあり、その上に2つの赤い斑点が見られる。翅の形は三角形に近く、名の通り非常に素早く飛び回る。
A butterfly with the upper side of the wings a deep blue and black, and especially, there is a white border along the edge of the wings. Also, there are two red spots on the top. The shape of the wings is close to a triangle, and as the name suggests, it flies very fast and nimbly.