De Mercuurwaterjuffer (Coenagrion mercuriale) in Nederland?

Recently, several species of damselfly that were considered to be extinct in The Netherlands were re-discovered. We describe the habitat and ecological requirements of Coenagrion mercuriale in order to provide an accurate search image for this species. The habitat is usually situated in agricultural landscape, in places mostly ignored by many observers. Our description of the ecological requirements may enable observers to search more specific for Coenagrion mercuriale in The Netherlands. The influx of other southern species and the recent discovery of a new population in Belgium give hope for success.