There are a number of color polymorphisms, with body hairs in shades of white, yellow, orange, red, brown, and black.

Some forms are similar to Bombus wilmattae, which may actually be the same species.

There may also be some similar specimens in the area that are an as yet undescribed species.

[1] Its restriction to high-elevation regions may have produced physical isolation that led to its many color polymorphisms.

[3] The overcollection of queens from the wild for use in agricultural operations is a potential threat to the species.