Historically broadly distributed in western North America. Bombus occidentalis occurs along the Pacific coast and western interior of North America, from Arizona, New Mexico and California, north through the Pacific Northwest and into Alaska. Eastward, the distribution stretches to the northwestern Great Plains and southern Saskatchewan.
Eureka! A Western Bumble Bee - Bug Squad - ANR Blogs
Is this a Western Bumble Bee / Bombus occidentalis? : r/bees
Oregon Invasive Species: Bumble Bees and Bureaucrats
Researchers look for answers as to why wester
Western bumble bee on a purple flower
Wyoming Researchers Search For Answers On Why Western Bumblebees
Bumble Bee Pollination in Tomato Greenhouses
Western Bumble Bee (Yosemite National Park Bumble Bee Guide
BirdsEye Photography: Review Photos
All about the Western Bumblebee - Earth Rangers
Identification of Bumble Bees from Western North America with
Is this a Western Bumble Bee / Bombus occidentalis? : r/bees
Get Your Buzz On • Nebraskaland Magazine
A potentially endangered bee species may be hiding in plain sight