Rangjun Shi

1 Introduction The leafcutter bee Megachile rotundata F. (Hymenoptera: Megachilidae) is one of the most economically important managed solitary bee pollinators worldwide, primarily used for commercial pollination of alfalfa (Medicago sativa L.) (Fabaceae).[1, 2] Females of M. rotundata can efficiently trip up to 80% of flowers they visit and significantly increase alfalfa seed yields.[1] As a representative species of solitary bees, M.

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