Here’s a helpful illustrated fact sheet from USDA APHIS-PPQ: https://www.aphis.usda.gov/publications/plant_health/fs-box-tree-moth-check-boxwoods.508.pdf.
Box tree moth in the US is still confined (last check) to Niagara County, NY but adjacent Erie and Orleans Counties are also under quarantine. BTM is an entry in the Cornell Guidelines or contact us if you need a list of management options for NY.