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Yes Sarah, Gisela is right. It is a Chrysotoxum. It's one of two very similar species, I will not tell you which. That's up to you to find out :)

P.S.: look at the long antennae: Eupeodes never have that. It is a character for only a few syrphid genera, like Chrysotoxum. Also tipical for some Chrysotoxum-species is the darkened front-area of the wings, clearly shown in your picture. Two important things to immediately guess it's Chrysotoxum.