Cystidia stratonice Stoll, 1782

蜻蜓尺蛾(Cystidia stratonice)是尺蛾科(Geometridae)枝尺蛾亞科(Ennominae)的成員，本種的前翅為前翅為黑色底，略為半透明，後中線有一條彎曲的寬白帶，翅基有一塊白斑延伸到中室頂端；本種的後翅亦為黑色底，略為半透明，亞外緣線至後中線有一條彎曲的寬白帶，翅基為白色。Cystidia stratonice represents the only species of Cystidia distributed in Taiwan and shares no similar wing pattern with other geometrid moths. In Matsu, it is a common species and may feed on flowers in the daytime, however is is very rare in Taiwan island.