Flower-Visiting Insects of Spatterdock in Illinois
(Short-tongued bees collect pollen, while flies feed on pollen; Robertson doesn't describe it as such, but Lasioglossum nelumbonis is probably oligolectic on species of the Water Lily family; observations are from Robertson)
Halictidae (Halictinae): Lasioglossum nelumbonis cp olg
Syrphidae: Parhelophilus divisus fp
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