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Franklin's bumblebee
Franklin's bumblebee (''Bombus franklini'') is known to be one of the most narrowly distributed bumblebee species,〔 making it a critically endangered bee of the western United States. It is known only from a area in southern Oregon and northern California, between the Coast and Sierra-Cascade mountain ranges. It was last seen in 2006.〔 Franklin's bumblebee is known to collect and nectar pollen from several wildflowers, such as lupine, California poppy, and horsemint, which causes it to be classified as a generalist forager.〔http://eol.org/pages/1065361/details〕
==Description==
Franklin's bumblebee is accepted as a distinctive species separate from other species of ''Bombus'' and is hard to distinguish because it is very rare, but also because many species of ''Bombus'', including ''B. franklini'', are cryptic, therefore misleading, and almost impossible to identify. However, a member of ''B. franklini'' can be distinguished from other bumblebees by its distinctive pattern of yellow on the anterior top of the thorax that extends behind the wing bases to the top of its head. They have a solid black abdomen, its yellow thorax has a black and U-shaped design.〔http://phys.org/news162575495.html〕 Females have black hair on their faces and the vertices, while other bumblebees have yellow. Males of this species are similar except their malar spaces are long and wide. The hair on their faces is also yellow, and tergum 6 has some pale hairs laterally.〔http://www.xerces.org/franklins-bumble-bee/〕
The queen and workers of this species can be identified with a round face with an area between the bottom of the compound eye and base of mandible. They also have pitch black hair with some light hairs mixed above and below their antennal bases.〔
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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