Bumble bee species recorded in the study.

The bumble bee species found in the 16 allotment gardens, the mean number of individuals of each species per site, plot and 5 min (SE within parenthesis) and their respective size and tongue length categories, Lt = Long tongue, St = Short tongue, L = Large, S = Small. The cuckoo bumble bees B. bohemicus and B. rupestris were not included in the tongue length and size categories. Bumble bees were divided into two groups based on tongue length according to [16], [for B. hypnorum 54]. They were also divided into two size groups based on information on body size [44].