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Bombus mixtus
Bombus mixtus is a species of bumble bee in the Pyrobombus subgenus. Native to western North America and described in 1878.〔http://www.xerces.org/wp-content/uploads/2009/02/occidentalis_pocketid.pdf〕 These relatively small bees can be identified by hair markings on the adbdomen and thorax. The bees are noted for a red tail tip separated by a black stripe form pale hairs on T1 and T2. Males may appear similar to ''Bombus frigidus'', but can be differentiated by a distinctive patch of dense hairs located on basal segments of their flagellum and separation of the red tail tip from yellow basal tergal segments.
One proposed common name, "Fuzzy-horned Bumble Bee", has been criticised as being too long, unrelated to the Latin name, and only applicable to male specimens. A proposed alternate name, "Mixed Bumble Bee" is closer to the Latin, but is not very descriptive, though reportedly "refers to a diagnostic character present in both sexes."〔(【引用サイトリンク】url=http://bugguide.net/node/view/180221 )〕 Neither name seems to have caught on.
The bees are widely distributed throughout their range, which includes: Alaska, Washington, Oregon, California, Idaho, Colorado, Wyoming.〔(【引用サイトリンク】url=http://www.bumblebee.org/NorthAmerica.htm )〕 They are common in mountain meadows.
Synonyms and other taxonomic names: Bombus edwardsii var russulus Frison, 1927〔
==References==
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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