Bombus lucorum
Habitat: Parks, gardens and other open areas
Size: Queens 19-22mm, workers and males 11-17mm
Species account: A large species, only slightly smaller than the similar B.terrestris. Queens and workers look alike, the former being told from B.terrestris by its white tail and paler lemon yellow banding. Males are easily distinguished by their yellow faces.
B.lucorum also has two extremely similar sister species, Bombus magnus and Bombus cryptarum. Only queens of these species can be distinguished, and even this is not always possible. B.magnus is found in the uplands of the north and west, and is somewhat larger and pales than B.lucorum. B.cryptarum queens have a dark mark through the upper yellow band, close to the wing. See here for an ecample. The distribution of this species is not yet fully understood, but it does not appear to be common in the UK
Queen
Male (indistinguishable from cryptarum and magnus)
