Blue-eyed hook-tailed dragonfly

Onychogomphus uncatus

''Onychogomphus uncatus'', the large pincertail or blue-eyed hook-tailed dragonfly, is a species of dragonflies belonging to the family Gomphidae.

This dragonfly is bigger and rarer than the small pincertail. It is present in Belgium, France, Germany, Italy, Spain, Portugal and Switzerland.