From BugGuide: Introduced from the Old World sometime after the 1930s.
Megachile_Eutricharaea_small_leaf-cutter_bee_female_on_Pycnanthemum_muticum_Jul_MMF
Small leaf-cutter bee,(Megachile, Eutricharaea) on Pycnanthemum muticum (mountain mint) in July. Photo © Mary Free
