This hoverfly caught visiting the Golden Rod is rather big and impressive. It’s a wasp-mimicking hoverfly, Volucella inanis (#681), which is a parasite on wasps, laying its eggs in the wasps nest where its larvae eat the wasp’s own larvae. This species is found across the South of England up to Midlands, and seems not so common though increasing its population in UK. A fine addition to the list.