Mededelingen Waar overnacht de Speerwaterjuffer (Coenagrion hastulatum)?

A roosting site of Coenagrion hastulatum near one of the largest populations in The Netherlands was found in dry open pine forest. The damselflies perched vertically in grassy vegetation in the undergrowth, preferably in the lighter parts of the forest. Remarkably, only males could be detected. The vast majority of the individuals roosted within 150 meters distance of the reproduction water. There is a lack of knowledge on species-related roosting sites in dragonflies. This can be important for a better understanding of the ecology and conservation of species.