White-clubbed Glasswing (Scaeva pyrastri) Wing length 9.25-11.25. Flight May-Mid August
Species of the week –1st December
The first thing you will notice if you spot this hoverfly, are its abdominal markings. They remind me of hockey sticks, but the shape is often referred to as clubbed or bowed. Some prefer to refer to them as smoothwing, others glasswing due to the lack of microtrichia (tiny hairs) on the wings. There are 5 species listed for the British Isles but there are only 2 that you are likely to come across anytime May to mid-August. These are pryrastri and selentica the main difference being white/cream abdominal markings for the former and yellow for the latter.
If this hoverfly seems familiar, even if you haven’t found one in the wild, it’s probably because you have seen the 1st edition of Britain’s Hoverflies by S. Ball and R. Morris published by WILDguides, where it is featured on the front cover.
