Distinguished with care from other Yponomeuto species by the terminal cilia on the forewing being pure white, as opposed to grey. This can be hard to determine in the field, please record as the aggregate if uncertain.
Best recorded in the larval stage, or bred specimens. Larval webs can be numerous where the foodplant occurs.
Verification Grade Comment: Occupied larval web or bred only
Recorded in 42 (61%) of 69 10k Squares. First Recorded in 1874. Last Recorded in 2019. Additional Stats