| Chalcosyrphus valgus |
| Authority | : | (Gmelin, 1790) |
| Nederlands | : | Kleine rooddij-bladloper |
| Norsk | : | rødbeint råtevedblomsterflue |
| Svenska | : | rödbent mulmblomfluga |
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| Fagne de Brackvenn, Belgium; 14 - 20 July 2013. | |
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| Fagne de Brackvenn, Belgium; 30 May 2014. | |