Known locations with biophysical regions depicted by black lines and counties by gray lines.

Known locations with biophysical regions depicted by black lines and counties by gray lines.

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

Vermont Distribution