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The yellowhead bumblebee, ''Bombus flavifrons'', is a species of bumblebee, common in western North America. == Description == The yellowhead bumblebee is a robust bumblebee; the queen has a body length between and a wing span of , the male is in length with a wingspan of , while the workers have body lengths from and wing spans from .〔(【引用サイトリンク】title=Bombus flavifrons )〕 The yellowhead bumblebee has a dense, untidy fur. The head is yellow with black hairs intermixed on the posterior part,〔 the thorax has a mixed black and yellow colouration, often (always with the queen) with a black, central field. The first two terga (abdominal segments) are yellow, on the females often with a black, central field on terga 1 to 2. Terga 3 and 4 are red, and the tail black, sometimes with yellow fields. ;Subspecies Subspecies include:〔(Bumblebee.org ) . accessed 3.30.2013〕 *''B. f. dimidiatus'' — with the red fur more or less entirely replaced with black 〔 *''B. f. flavifrons'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yellowhead bumblebee」の詳細全文を読む スポンサード リンク
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