This is a picture of Nematus latitarsus on a birch leaf at the Mckeldin Area of Patapsco Valley State Park in Carroll County, Maryland.
Holes on young fruits of Prunus domestica, less than 2 week after flowers dropped
Larvae of 6 mm
spruce larva (Picea abies)
https://www.inaturalist.org/observations/99457262
Found on Betula pendula
Collected with trap, stored in alcohol
Found on Pinus sylvestris
collected with a kind of tree trap and stored in alcohol