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There are two possible options, judging from the photo alone.
1. C. producta Lw. - more common, associated mainly with Sonchus plants.
2. C. punctella - less common, but certainly present in Scandinavia, associated with Tragopogon or Scorzonera.

Differences are in ceratin seta coloration, length of proboscis and phallus structure, which are not visible here.