Last week I spent a great day in the company of Jason, Alan & John, focusing on the invertebrates of Flitwick Moor in the morning and Maulden Wood in the afternoon.
We found all kinds of stuff through the day but this was my favourite fly, the Square-spot Deerfly, Chrysops viduatus. Before now I have only ever come across the Twin-lobed Deerfly, Chrysops relictus, in Bedfordshire. The names refer to the shape of the black mark on the top of the abdomen. Identification cannot be confined to this marking alone, but the wing markings help to confirm that it is, indeed, C. viduatus. I’ve got a healthy fear of these Deerflies, the females of which can give a painful bite, usually on the back of the neck.
I’ve shown a photo similar to this in the past. These hats appear to be remarkably effective in Deerfly areas!!