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Bombus bifarius (Two Form Bumble Bee) is a species of Hymenoptera in the family Apidae. They visit flowers of largeflower hawksbeard, Scouler's woollyweed, western coneflower, and thinleaf huckleberry.

EOL has data for 11 attributes, including:

Known occurrences, collected specimens and observations of Two Form Bumble Bee. View this species on GBIF