A black and white bee found in my back garden
No interactions present.
I agree with David that this is Andrena cineraria - I've never seen the much rarer A. vaga, but it is supposed to have all-white hairs on the thorax, rather than the white and black pattern of cineraria.
What's surprising though is the date - Andrena cineraria is supposed to fly in April and May! The BWARS atlas account for cineraria does say that "rare records ... from August may represent a second brood", but 28 October is extraordinarily late. Could this one have emerged inside a shed or greenhouse do you think? Have you seen any others? Maybe it's a very rare third brood!
Would be worth reporting to BWARS if you're not already in touch with them, see:
Entomologist and biological recorder
When Andrena cineraria was suggested, I thought it was a rather late date but I didn't think in terms of that late. It was found about 3 metres from a garage, but that has a solid concrete floor. If it was locally reared then I would be a bit surprised - in this area it is an insect more closely associated with well-drained Cotswold soils. I haven't seen any other examples. Record submitted to BWARS - thanks for the link.
In response to my record, the BWARS recorder suggests that the bee was affected by interupted hibernation due to the warm weather we experienced in October.
Lat/Lng: 51.9, -2.1
OS grid ref: SO9324