Myathropa florea is a large, very common European and North African species of hoverfly.
It is sometimes called Dead Head Fly because of the marking on its thorax which can resemble a human face or death mask.

First 3 photos: Pfänder Mountain, Bregenz, Vorarlberg, Austria, 12 July 2013
Last 2 photos: Pfänder Mountain, Bregenz, Vorarlberg, Austria, 1 August 2020