Scaeva pyrastri · žiedmusė

EN · pied hoverfly, white-clubbed glasswing
DE · Späte Großstirnschwebfliege, Blasenköpfige Schwebfliege, Halbmondschwebfliege
PL · bzyg brzęk

https://en.wikipedia.org/wiki/Scaeva_pyrastri
This species can be found in gardens, meadows and wasteland. Adults are common visitors to flowers of Apiaceae (Umbelliferae), but also of rape, honeysuckle and daisies. They fly from April to September, with the peak in July and August. The larvae feed on different aphid species. During the larval stages they may consume over 500 aphids.