Sieboldius is a genus of dragonflies in the family Gomphidae. The genus occurs in Asia and is closely related to the Dragonhunter Hagenius brevistylus of North America. The genus contains the following species: Sieboldius albardae Sieboldius alexanderi - Small Dragonhunter Sieboldius deflexus Sieboldius gigas Sieboldius herculeus Sieboldius japponicus Sieboldius maai Sieboldius nigricolor References Gomphidae Taxa named by Edmond de Sélys Longchamps Anisoptera genera