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Zitronenfalter, Zitronen-Falter (Gonepteryx rhamni), Maennchen saugt Nektar an den Blueten von Wasserdost, Deutschland, Rheinland-Pfalz | brimstone (Gonepteryx rhamni), male sucking nectar at the blossoms of hemp agrimony, Germany, Rhineland-Palatinate (KEYSTONE/PICTURE ALLIANCE/Blickwinkel/J. Fieber)