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Bombus terricola
''Bombus terricola'', the yellow-banded bumblebee, is a species of bee in the genus ''Bombus''. It is native to southern Canada and the east and midwest of the United States. It possesses complex behavioral traits, such as the ability to adapt to a queenless nest, choose which flower to visit, and regulate its temperature to fly during cold weather. It was at one time a common species, but has declined in numbers since the late 1990s, likely due to urban development and parasite infection. It is a good pollinator of wild flowers and crops such as alfalfa, potatoes, raspberries and cranberries.〔(【引用サイトリンク】title=Bumble bees: yellow-banded bumble bee (''Bombus terricola'') )〕
==Taxonomy and Phylogeny==
''B. terricola'' belongs to the order Hymenoptera, which consists of ants, bees, wasps, and saw flies. ''B. terricola'' belongs to the family Apidae, which encompasses bumblebees, honey bees, stingless bees, and more. Within this, it is part of the genus ''Bombus,'' which consists of bumblebees. Kirby first defined this species in 1837. Bombus occidentalis has been speculated to be a subspecies of ''B. terricola'', but most experts now agree that it is its own distinct species. ''B. terricola'' is also closely related to ''B. affinis'' both phylogenetically and in terms of pheromone signalling. Often times, the ''B. terricola'' is so similar to ''B. affinis'' that members of ''B. affinis'' can invade and dominate entire ''B. terricola'' nests without the hosts knowing.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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