This is a hover fly I have been intrigued by for a long time. After stacking I finally found the answer why this fly, Rhyngia campestris, has such a strange snout. It is clearly designed to keep its cigarette dry when it rains!
I think so, I found it attending flowers. It seems to have a more stiffened proboscis compared to other flies which have retractable ones. I think that is why they have this projecting nose where the proboscis fits in.