Like their European honey bee relatives, alfalfa leafcutting bees are vulnerable to a disease known as “chalkbrood.”

像它的欧洲蜜蜂同类一样，苜蓿切叶蜂容易受到一种叫做“蜜蜂白垩病”的疾病侵袭。

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In fact, the work of America's wild bees might be especially needed in view of the blows being dealt to the nation's No. 1 pollinator, the "domesticated" European honey bee, Apis mellifera.

事实上，由于美国的头号授粉蜂，即“已驯化了”欧洲蜜蜂(Apis mellifera)受到打击，美国野蜂的工作也许特别需要。

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Africanized honey bees, which are hybrids of African and European bees, can be highly defensive around their nests and swarm more frequently than other honey bees, according to the U.S. Department of Agriculture.

CNN: Africanized bee swarm kills Texas man

Last week the European Food Safety Authority warned that neonicotinoid pesticides should not be used on crops attractive to honey bees.

BBC: Week ahead in committees