A cuckoo bumblebee, reproducing in colonies of Bombus affinis and B. terricola. With the catastrophic decline of B. affinis, this species has also become rare in much of its range.
There are 2 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 |
