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Tony

I have recorded Episyrphus balteatus in every month of the year at Tower Hamlets Cemetery Park in east London. I have not witnessed them tucked away hibernating, but I have seen them on extremely cold but sunny days sitting on logs in small numbers, and giving the impression that they have just emerged from under the bark or similar. They were certainly too cold to fly and could barely crawl. I easily picked them up in my fingers.

I notice that the winter/very early specimens tend to be male.