I have keyed this fly out to Clusiidae, using Oosterbroek. From there I attempted to get further with Stubbs (1982), but I'm not really convinced by either determination and I wondered if anyone could point me in the right direction please?
Found on 2020-11-22 in a field on young crop in North Shropshire, not far from manure heap.
- Body length ~ 8mm.
- Cannot see any spots on wings. R4+5 not forked. Haltere orange. Vein Sc complete; separate from R1 and does not meet costa near R1.
- Plinial suture present. Various vibrissae. Some in-curved F bristles. Arista long with a few small hairs near base. P-bristles appear parallel.
- Coxae of mid legs not far apart. 1st segment of hind tarsi not short. Dorsal preapical bristle present on mid and hind tibiae.
I can take further photographs if need be. Any help would be much appreciated.
Thank you in advance.
I'm afraid you're on the wrong track here. Try Scathophaga.
Thanks for pointing me in the right direction. After running through the key by Ball for Scathophagidae, I think it is Scathophaga stercoraria. Does that sound better to you?
Thanks again for your help.
Yes, that looks good. The cleft in the second antennal segment, clearly visible in your fifth picture, is the give-away for Calyperates.