About Bombus morrisoni Cresson, 1879
Bombus morrisoni Cresson, 1879 is a species of bumblebee, commonly known as the Morrison bumblebee. It is native to western North America, where it occurs in western United States and British Columbia. This bumblebee inhabits open scrub habitat. It can nest underground, aboveground in existing structures, and in grass hummocks. It forages on a wide variety of plant types, including milkweed, milkvetch, rabbitbrush, thistles, bee plants, goldenbushes, sunflowers, and goldenrods. In some parts of its range, it acts as an important pollinator of alfalfa. This species has experienced some population declines, and has not been detected recently in multiple well-sampled areas within its native range. It remains secure and common in other areas of its range.