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Bombus occidentalis, the western bumble bee, is one of around 30 bumble bee species present in the western United States and western Canada. [1] A recent review of all of its close relatives worldwide appears to have confirmed its status as a separate species.
Historically, Bombus occidentalis, the so-called "western bumble bee" was the most common species, with a distribution all the way from California to British Columbia and Alaska, but diseases introduced by commercial rearing operations in the eastern United States brought coastal populations of B. occidentallis to the brink of extinction, and B ...
Franklin's bumblebee (Bombus franklini) is one of the most narrowly distributed bumblebee species, [3] making it a critically endangered bee of the western United States. [4] It lives only in a 190-by-70-mile (310 by 110 km) area in southern Oregon and northern California , between the Coast and Sierra-Cascade mountain ranges.
The bumble bee population has declined sharply in the southern Plains states, including Mississippi. ... a small rabbit found in mountainous areas of the western U.S.; and the Railroad Valley toad ...
Suckley's bumble bee inhabits western meadows at a wide range of elevations. Like all bumble bees, Suckley's bumble bee requires suitable nesting sites for colonies, nectar and pollen resources during the colony period (spring, summer, and fall), and suitable overwintering sites for mated females.
Bombus bifarius, the two-form bumblebee, is a species of eusocial bumblebee of the subgenus Pyrobombus. B. bifarius inhabits mountainous regions of western North America, primarily the states of Colorado and Utah .
Suckley’s cuckoo bumble bee may be classified as endangered under the Endangered Species Act after a recommendation from the U.S. Fish and Wildlife Service. This social parasite is native to 15 ...
The list presented here is a checklist of global bumblebee [1] species (Tribe Bombini) based on the Bombus phylogeny presented by Cameron et al (2007) [2] and grouped by subgenus following the revision of Williams et al (2008). [3]