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Chalcosyrphus valgus · žiedmusė
- Sort træsmuldsvirreflue
- Rotbeinige Mulmschwebfliege
- punareisipuuhari
- Kleine rooddij-bladloper
- raudbeint ròtevedblomsterfluge
- imik osikowy
- rödbent mulmblomfluga
Adults do not fly to flowers or do so very occasionally. Larvae saproxylophagous, develop under the bark. Adult body length 12-15 mm. The antennal flagellum is light, orange. Chalcosyrphus femoratus is similar but it has black antennal flagellum.
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