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Western bumble bee workers have three main color variations. [3] The first color variation is found from northern California, north to British Columbia, and east to southwest Saskatchewan and Montana. [3] B. occidentalis in these areas have yellow hair on front part of thorax.
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 ...
[2] [3] Suckley's bumble bee is a generalist pollinator and represents a rare group of obligate, parasitic bumble bees (cuckoo bumble bees). Suckley's bumble bee is a social-parasite because it invades the nests of the host bumble bees, including the western bumble bee (Bombus occidentalis), and relies on host species workers to provision its ...
The bumble bee population has declined sharply in the southern Plains ... workers can grow to as large as three-quarters of an inch (18 mm). ... an amphibian found in western North Carolina; the ...
Experimental analysis of worker division of labor in bumblebee nest thermoregulation (Bombus huntii, Hymenoptera: Apidae). Behavioral Ecology and Sociobiology, 61(5), 783–792. Xu, J., et al. (2013). Detoxification and stress response genes expressed in a western North American bumble bee, Bombus huntii (Hymenoptera: Apidae). BMC Genomics, 14 ...
A worker bee is any female bee that lacks the reproductive capacity of the colony's queen bee and carries out the majority of tasks needed for the functioning of the hive. While worker bees are present in all eusocial bee species, the term is rarely used (outside of scientific literature) for bees other than honey bees , particularly the ...
Bombus bifarius has a relatively small body size ranging from 8 to 14 mm (0.31 to 0.55 in) for workers and 15–19 mm (0.59–0.75 in) for queens, with short, even hair covering their bodies. [5] Hair on the faces of B. bifarius individuals is usually yellow or white in color and sometimes exhibits black coloration on the top of the head. [ 5 ]
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 .