Bombus subterraneus

Bombus subterraneus

Observation - Bombus subterraneus - UK and Ireland. Description: Found these bees going in and out of a compost bin. I used the Natural History Museum ID guide here http://www.nhm.ac.uk/research-curation/research/projects/bombus/_key_colour_world/worldcolourkey.html and got to B.subterraneus. It's not exactly how my

Found these bees going in and out of a compost bin. I used the Natural History Museum ID guide here http://www.nhm.ac.uk/research-curation/research/projects/bombus/_key_colour_world/worldcolourkey.html and got to B.subterraneus. It's not exactly how my Collins Insects by Michael Chinery shows it to be, any other ideas most welcome