▁of ▁b umble be es . ▁They ▁are ▁relatively ▁host - specific ▁and ▁are ▁found ▁primarily ▁in ▁the ▁sub gen us ▁Bomb us ▁sens u ▁str ic to . ▁Be es ▁inf ested ▁with ▁the ▁m ite ▁have ▁a ▁reduced ▁lif es pan ▁in ▁labor atory ▁conditions , ▁and ▁although ▁in ▁one ▁study ▁they ▁for aged ▁at ▁a ▁rate ▁similar ▁to ▁un in fect ed ▁be es , ▁inf ected ▁be es ▁showed ▁a ▁greater ▁preference ▁for ▁a ▁single ▁flower ▁type . ▁Pre val ence ▁var ies , ▁but ▁in fection ▁appears ▁to ▁be ▁more ▁common ▁among ▁commercial ▁colon ies ▁than ▁wild ▁populations . ▁Among ▁colon ies ▁commer cially ▁imported ▁from ▁the ▁Netherlands ▁and ▁Belg ium ▁to ▁Japan , ▁inf est ation ▁rates ▁were ▁ 2 0 %. ▁In ▁South ▁America , ▁pre val ence ▁is ▁very ▁low ▁in ▁native ▁populations . ▁In ▁Canada , ▁there ▁was ▁evidence ▁that ▁commercial ▁b umble be e ▁populations ▁were ▁spread ing ▁L . ▁b uch ner i ▁to ▁wild ▁populations . ▁ ▁References ▁ ▁Category : T rom bid iformes ▁Category : Anim als ▁described ▁in ▁ 1 9 5 1 ▁Category : Par as ites ▁of ▁be es <0x0A> </s> ▁N iels ▁Th a an ing ▁( J anu ary ▁ 5 , ▁ 1 7 7 9 ) ▁was ▁a ▁Dan ish - born , ▁Norwegian ▁painter . ▁ ▁He ▁is ▁best ▁known ▁for ▁his ▁decor ations ▁in ▁Kong s berg ▁Church ▁( K ongs berg ▁Kir ke ) ▁from ▁ 1 7 6