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Which? White-tailed is not terrestris. I am not sure you could tell anyway from the picture.
When were standardised English names introduced for bumble bees?
You will find that white-tailed and buff-tailed have been around for several decades for lucorum and terrestris respectively, and are as standard as vernacular names can ever be. A number of Sladen's (1912) English names are still in use today.
Lat/Lng: 50.7226, -1.8478
OS grid ref: SZ108914