These bumblebees live on my balcony, in ventilation holes in doors and windows. I'm trying to find the exact name of the species, but I can't find any that look exactly like this. Their top segment is completely black and the bottom one is completely orange. I'm not 100% sure that these are bumblebees, but they behave like bumblebees, I mean, they fly horizontally and like nectar.
The location is in the southern part of Germany (Bavaria). The insects are ~20mm long, similar to the size of a honey bee.
The closest match is probably Bombus lapidarius, but Bombus lapidarius only have orange "tails", most of their bottom half is black.
It looks very similar or even identical to Bombus alpinus, but the problem here is that Bombus alpinus usually live in the mountains (and I'm in 300km from the closest mountains) and they are considered to be almost extinct in Germany.
Do you have any idea what they are called?