Recorded once over 150 years ago. This is considered an Irish species on the basis of a record believed to come from Youghal Co. Cork in the mid-nineteenth century and collected by Miss Ball a respected entomologist. There is a possibility that undetected populations could occur on the large rivers in the south and east. The Club-tailed Dragonfly is found on large slow-flowing rivers. In Britain the adult flight period extends from mid May to early July.

This species is unlikely to be confused with any other Irish species.

KEY IDENTIFICATION FEATURES

• a medium sized species with club-shaped abdomen
• males black with extensive yellow markings on thorax and abdomen which turn green when mature
• females black with extensive yellow markings