Neue Libellenfunde aus der Niederschlesischen Heide (Bory Dolnośląskie) in Polen (Anna Rychła)

In this study, the results of the investigation of Odonata, conducted in the years 2015 and 2016 in three boggy protected areas („Zacisze“, „Przygiełkowe Moczary“ und „Żurawie Bagno“) of the Lower Silesian Wilderness are presented. A total of 41 species was found. There were eight species new for the investigated area, six of which were of Mediterranean origin. The observation of Orthetrum albistylum (Selys, 1848) shows that this species has already reached the western border of Poland and a further expansion to Germany is to expected. The investigations did not reveal any new findings of Aeshna subarctica Walker, 1908 in the area, so the status of this species is still unclear. Of the rare species the new record of Leucorrhinia caudalis (Charpentier, 1840) in the NSG "Zacisze" was demonstrated. It is the first observation of this species in the Lower Silesian Wilderness and as far as the only one in the southern part of Lubuskie Voivodeship, but the status of the species remains unknown. The study confirms that the biodiversity in the areas is very high. The thermophilous species increase the local diversity in the peat bogs on one hand, but they are also regionally new faunal elements, which may cause strong changes in the bog’s dragonfly community on the other hand. Therefore, further systematic research in the peat bogs in this area is necessary.