Beetle overwintering in Combe Bank caves.
No interactions present.
I'm afraid that's the best photo I got. I was helping with a bat survey and I was restricted to torchlight so as not to disturb the bats. It was quite active and it left the scene after this shot. If I recall rightly, it was about 2 cm long.
Sorry, didn't read your comment until after I'd posted the ID! Nebria brevicollis is supposed to be 11-14mm long, but that might fall within the range of "about" 2cm I guess!
Entomologist and biological recorder
Thanks. Yes, it could well fall within that range as my impression is probably influenced by the legs. I will add a small ruler to my photography kit!
altus silva is quite correct that the photo shows a notch on the inside edge of the left front tibia, and this rules out Nebria - apologies, I clearly didn't look closely enough before suggesting my ID.
However, I'm not entirely convinced that it is Laemostenus terricola either, the carabid shown in this observation seems to have its pronotum (top of thorax) too rounded to be Laemostenus.
So for now I've gone back to agreeing with Matt's undoubtedly correct ID at family level.
What do others think?
The brush of golden hair on metatibias and the cave would suggest again a Laemostenus. I agree that the pronotum is not a perfect fit; but as far as I know L. algerinus, which would be a better one, does not occur in British Isles. And it is not Sphodrus either.
Yes, the point about the golden hair on the inside edge of the hind tibia is a good one, and I'm persuaded that it is Laemostenus - thanks for persevering with this one!
Lat/Lng: 51.280241666667, 0.11892333333333
OS grid ref: TQ478555