The most common and widespread Onychogomphus species and the only one occurring in large parts of Europe. Males perched on streamside rock, with their claspers raised, are a typical sight in the summer, especially in the south.


Total: 46-50 mm.
Abdomen: 31-37 mm.
Hindwing: 25-30 mm.


Largely unshaded (usually rocky) rivers and streams. Occasionally occurs at large lakes.

Flight Season

From May to September.

Range and Status

Rare in Denmark.