EN
In the year 2011 Leucorrhinia pectoralis was recorded in the former borehole sulphur mine „Jeziórko” (E of Tarnobrzeg, south– eastern Poland). The species was observed in two drainage canals of mining subsidence (sites 1 and 3) as well as along the road running through the area of flood lands in mining subsidence (site 2). At sites 2 and 3 the species was very numerous (on May 28, more than 100 specimens per 100 m of observation transect), at site 3 numerous territorial males were observed. For the L. pectoralis the examined areas are typical secondary habitats to which this species is being adapted and in the suitable stages of succession it often forms large populations in Poland. New data is essential for the knowledge about the distribution of this species in Poland (Bernard et al. 2009). It fills the gap on the map of distribution situated between central Poland and the Lublin Region. It is also the first one from the central part of the Sandomierz Basin, the area with very little data in general so far. This situation results mainly from the lack of respectively targeted studies on odonatofauna of this macroregion.