The tree, Carpinus caroliniana, is within a couple feet of Campanula Americana - I did not observe the megachile at the time the cuts were made. I've suspicion proximity to food may have played a role, if megachile campanulae were the artists, which I have observed in the yard.
Big Spunk Rest Area
leafcutter bee cuts on leaves
observation for leafcutter bee cuts:
https://www.inaturalist.org/observations/189973884
Leafcutter bees have been snipping
Big Spunk Rest Area
I'm not sure on the plant ID. Some similar plants nearby were, I think, Snowberries.
https://www.inaturalist.org/observations/183795552
leafcutter bee in action on an ash tree
observation for bee: https://www.inaturalist.org/observations/167384607
there are cuts on the leaves from leafcutter bees. the observation for the bees is here: https://www.inaturalist.org/observations/178201769
On Common Pawpaw
Flat-tailed leafcutter bee photographed here earlier this month, forgot to post the plant itself. Volunteer silver maple seedling from an established one nearby.
Bee observation link: https://www.inaturalist.org/observations/171643845
evidence of leaf cutter bees but this observation is for the plant.
observation for the bee(s):
https://www.inaturalist.org/observations/178270022