(Anotogaster sieboldii)
Anotogaster sieboldii, as known as golden-ringed dragonfly, jumbo dragonfly, Siebold's dragonfly or oniyanma (オニヤンマ、鬼蜻蜓、馬大頭) in Japanese, 無霸勾蜓 in Chinese language and 장수잠자리("jang-su-jamjari", means 'General Dragonfly') in Korean language is the largest species of dragonfly native to Eastern Asia, especially Japan, China, Korean Peninsula. It can grow between 95 and 100 mm in length.