New Hoverfly species - Volucella inflata

I have been remiss in identification of Hoverflies given that the Field Guide by Ball and Morris is so good but an expired hoverfly in the house gave me an opportunity to study one closely. It turned out to be Volucella inflata which is fairly close to the edge of its range in the UK here in Monmouthshire. The adults visit bramble (which we have plenty of) and the larvae inhabit sap runs on trees