Which US state is mentioned as a location where B. fernaldii populations have been documented in the western part of its range?
Answer
Montana
The distribution of the Yellowish Cuckoo Bumblebee covers a vast stretch across North America, generally moving from the Great Lakes region eastward throughout much of the United States and into Canada. Although often associated with eastern and central areas, evidence confirms the species extends westward as well. Specifically, documentation places populations of *B. fernaldii* as far west as the state of Montana, indicating a degree of adaptability provided its specific host species are available in that region.

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