For a parasitic species, B. citrinus is a common bumble bee. Though its range extends into Georgia, it is a northern species with population concentrations from New York to northern Vermont. Though few records were found during the survey, its two host species, B. impatiens and B. vagans, have robust populations in Vermont.
Select food plants: Asclepias (Milkweeds), Rubus, Verbena (Vervains), Eupatorium, Trifolium (Clovers), Solidago (Goldenrods)
Hosts: B. impatiens, B. vagans and possibly others
Similar Species: B. affinis, B. perplexus, B. vagans
females: April – October
males: June – October