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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 ...
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]
A bumblebee (or bumble bee, bumble-bee, or humble-bee) is any of over 250 species in the genus Bombus, part of Apidae, one of the bee families. This genus is the only extant group in the tribe Bombini , though a few extinct related genera (e.g., Calyptapis ) are known from fossils .
Bombus bifarius was first described by Ezra Townsend Cresson in the 1878 Proceedings of the Academy of Natural Sciences of Philadelphia. [2] It is a member of the order Hymenoptera and the family Apidae, which also includes orchid bees, honey bees, and bumblebees. [1]
The species is a common bumblebee found in the western North America from Alaska and British Columbia, and Washington, to northern Idaho, western Montana, and the coastal parts of California. [ 2 ] [ 4 ] The Sitka bumblebee has experienced mild population declines in parks in California due to competition with the yellow-faced bumblebee ( B ...
The obscure bumblebee is very similar to the yellow-faced bumblebee (B. vosnesenskii), and the two can only be definitively told apart by the structure of the male genitalia. [3]
Bombus centralis is a small bumblebee with a long face and proboscis [2] and light brown wings. The queen has a body length between 12.5 and 16 mm (0.49 and 0.63 in) and a wing span of 29 to 33 mm (1.1 to 1.3 in); the males have a length of 10 to 13 mm (0.39 to 0.51 in) and a wing span of 22 to 29 mm (0.87 to 1.14 in), while the workers are 9.5 to 12.5 mm (0.37 to 0.49 in) in length with a ...