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Mixed meadow wetland area.
Like Megacyllene caryae, but active in late summer / fall.
Found on brackish water steam edge feeding on goldenrod
Megacyllene robiniae, commonly known as the locust borer, is a species of cerambycid beetle endemic to eastern North America. It is a serious pest to Robinia pseudacacia, the black locust tree, with which it is sympatric.