Bees Hotel

I don't know the exact Eucera species, so I put in the Anemone (which are easier for me to ID...)
it was a cool day - 10 Celsius degrees, so the bees took refuge inside the Anemone, to keep warm together.
the flower was tilted down with their weight, I saw there was something inside the flower, I held the camera from under it and thought they were the "regular" flower-beetles that I usually find in Anemones - and was pleasantly surprised to find the Eucera bees!