Status: - This species is confined in the British Isles to areas of England south of the wash. Even here quite large regions seem unable to support this species.
Habitat: - Unshaded slow flowing rivers and canals with floating and emergent vegetation. Also found on stream fed and drained lakes containing carp.
Flight period: - Late May to mid August.
General: - Mating takes about thirty minutes and eggs are laid on the underside of floating leaves and into the stems of emergent vegetation. Larvae live on the bottom of the water body among the rotting leaf litter.
Adult emergence can be highly synchronized, with large numbers taking to the air all at once, when tall vegetation used for emergence is disturbed. Males are territorial and use their feathery legs both as a threat display and for attracting females.