Sicus ferrugineus · lenktapilvė musė

• ferruginous bee-grabber
• Gemeine Breitstirnblasenkopffliege
• ślipień trzmielowiec

https://en.wikipedia.org/wiki/Sicus_ferrugineus Adults can be encountered from May through September, feeding on nectar or pollen. Their larvae are endoparasites of bumble bees of the genus Bombus. They pupate and overwinter in their victims. 1851