Over the past month there have been quite few hoverflies that mimic bees or wasps about. Some of the mimicry is really good and some less convincing, at least to our eyes. Harmless species that have evolved to look like potentially dangerous or distasteful species are examples of Batesian mimicry. There are many examples in the hoverfly family. Here are some photos that I have taken over the past few weeks.
There are many others I could have shown. Look carefully at the "bees" and "wasps" and you might be surprised at how many turn out to be hoverflies or indeed other families of fly (Conopidae for example) or other insects such as wasp beetles.