Ulmus glabra Hudson - Bergulme
P.H.
tentative as i'm not a leaf miner expert, but it is on Symphoricarpos so i believe this should be correct
27 Aug 2022.
Buckingham Springs, Bucks Co, PA.
Found on Ageratina altissima.
This submission is for the linear mine.
The leaf blotch is here:
https://www.inaturalist.org/observations/134044826.