When I first saw these hoverflies basking on the leaves of tall reeds along the edge of a path at RSPB Radipole, I knew immediately they were something different, a species I hadn’t seen before. This was mostly due to their bright orange colour – they seemed almost to be glowing in the sunshine. I thought they were a species of Helophilus, as their body markings looked similar to Helophilus pendulus and H. trivittatus, but their orange gleam marked them out as something other.

I was wrong but close; these are a species of Parhelophilus, of which there are three species in Britain. One species, Parhelophilus consimilis, is rare and darker in colour, and the other two, P. frutetorum and P. versicolor, are so similar as to be very difficult to distinguish, one from the other.

If I had known what to look for – the male P. frutetorum has a small tubercle on the underside of its hind femur, I might have been able to get better photos that showed that area of the leg, but somehow I doubt it. And anyway, it’s not necessary to know the precise name of something to feel the pleasure of seeing it.