Bee ID required

[Lostash]

I have been advised by Leicestershire Naturespot to post these pics here in the hope of obtaining ID for these bees if possible? Leicestershire, two weeks ago...all over yellow Yarrow plants...in twos or threes. Quite small, max 7mm length. Can anyone assist?

[piros]

Colletes sp., I think. Possibly C. daviesanus.
If you post it in the Aculeata section of the Forum, you might get a firmer ID.
Regards,
Henrik