Chlorogomphus is a genus of large to very large dragonflies native to Asia and the only living genus in the family Chlorogomphidae. The genus comprises about 50 described species distributed from the Himalayas and southern China to Japan, Southeast Asia and parts of Indonesia, where they inhabit forested mountain streams.

Chlorogomphus includes some of the largest living dragonflies. Many species exhibit marked sexual dimorphism, with females having broad, often brightly coloured wings, while the wings of males are usually transparent. Females also lack the long external ovipositor characteristic of the closely related spiketails (Cordulegastridae), instead possessing a short or obsolete ovipositor.

...