List of Danish species of bees, both wild and honey bees; foraging specialization [based on 63]; Danish Red List category [based on 57]; status as threatened (VU+EN+CR), not threatened (LC+NT), other (NA+DD) or Regionally Extinct (RE); total number of known Forage Plants (FP) for the bee species (0 when forage plants are unknown in the revised literature); number of the forage plants only visited by the wild bee species, but not by honey bees; overlap of forage plants that are visited both by wild bee species and by honey bees; MacArthur and Levins asymmetrical measure for niche overlap of honey bee species on wild bee species.

While the Bombus lucorum-complex in Denmark is near impossible to distinguish morphologically, in particular amongst the workers, they are here maintained separately because of certain known forage-differences [118]. Andrena albofasciata is considered a junior synonym of A. ovatula by [63, 64], but retained here in agreement with [57]. Lecty is not fully confirmed for Andrena nanula and Lasioglossum sexnotatulum. The former visits Compositae and Rosaceae in Denmark, although that might have been nectar sources, as it is suspected oligolectic on Apiaceae in neighboring countries [119]. The latter species is suspected polylectic based on forage plants in Finland [120]. Other species may be to strictly defined by Scheuchl and Willner [63], e.g. the polylectic Andrena ovatula, Colletes cunicularis, Hoplitis leucomelana, Megachile circumcincta and M. lagopoda which at least have specific pollen preferences [e.g., 121], and might be considered oligolectic.

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