Synonyms and other taxonomic changes
Used to be genus Psithyrus which is now considered a subgenus of Bombus.
Psithyrus tricolor
Psithyrus wheeleri
Explanation of Names
Author of species is (Franklin, 1911).
Range
Widespread in Canada and the United States, from Alaska to California in the West, New Brunswick to North Carolina in the East.
Internet References
common name reference; PDF doc (Committee on Common Names of Insects, Entomological Society of America)