Literature data and new records of Sympetrum pedemontanum in Polish lowlands are presented and referred to information in Askew's book. Habitats and abundance of the species at the Polish localities are analysed. Polish and East German data are compared.
This article discusses an interesting case of wing teratology in Sympetrum sanguineum (O. F. Muller, 1764). The wing is small and deformed. Some veins have a modiffied course or are missing. This a resuls from larval wing primordium damage, which decreased the oxygene and haemolymph inflow.