One of our earliest spring bumblebees. Unlike some of the other species it is still very common in most parts of the eastern United States. By late June/July you can see that the nests are producing males and beginning to wind down the season. (S. Droege, pers. comm)
Nests are categorized as existing cavities, and social behavior is categorized as primitively eusocial or semisocial (Selfridge et al., 2017).
There are 619 records in the project database.
GA | AL | WA | FR | CL | MO | HO | BA | BC | HA | CE | PG | AA | CV | CH | SM | KE | QA | CN | TA | DO | WI | SO | WO |