Sieboldius

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 Selys, 1886
 * Sieboldius alexanderi (Chao, 1955) - small dragonhunter
 * Sieboldius deflexus (Chao, 1955)
 * Sieboldius gigas (Martin, 1904)
 * Sieboldius herculeus Needham, 1930
 * Sieboldius japponicus Selys, 1854
 * Sieboldius maai Chao, 1990
 * Sieboldius nigricolor (Fraser, 1924)