Dalgety Bay lesser dung fly

Found in leaf litter at Dalgety Bay, this lovely brachypterous fly is allegedly a common species. Presumably I've just been overlooking it. The only one already on the DB list is Leptocera fontinalis, so defintitely "could do better".

You can see the scutellum here with two pairs of marginal spines and no discals. You can see the middle tibia with two anterodorsals in the distal half. You can also see the costa "overshooting" R4+5 (is that the right designation? Sounds a bit off).

Anyway, glad to have it on my sphaerocerid list. Should be easy enough to recognise in the future too