B. borealis is uncommon throughout the state, but can be locally common.This species is found all the way into the northernmost parts of Maine. In Vermont, they are often found in agricultural settings but can also be seen in meadows and fields. Queens emerge late in spring.
Select food plants: Vicia (Vetches), Cirsium (Thistles), Asters,
Prunella, Symphytum officinale (Comfrey), Eupatorium
Tongue Length: long
Nest: nests underground
Similar Species: B. fervidus
General Phenology:
queens: May – October
workers: June – October
males: July – October
Learn More:
Discover Life species page
Encyclopedia of Life species account