Small - length ~15mm. On Vibernum tinus
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Thanks for the id. Please can you tell me how you decided it is this species. In my book pratorum is depicted with a yellow abdominal stripe, which seems to be missing in this individual.
Yes, Bombus pratorum does usually have a yellow stripe on the abdomen, but as alcon_blue noted the amount of yellow can vary and the stripe is sometimes missing.
There's a good online bumblebee key produced by the Natural History Museum (and it allows for the yellow stripe being present or absent!):
Entomologist and biological recorder
The abdominal stripe is almost or entirely missing from most workers of this species, and may be broken (but never in my experience missing) in queens.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Somehow I managed to miss alcon_blue's note about the abdominal stripe. Apologies! Thanks for the helpful links.
Lat/Lng: 51.7, -2.6
OS grid ref: SO6302