Alsophila pometaria, commonly known as the fall cankerworm, is a species of moth that is found in North America. This species is notorious for its ability to defoliate trees during the fall season. There are a number of synonyms for Alsophila pometaria that researchers and scholars use in discussing this species. Some of the most commonly used synonyms for this moth include Anisopteryx pometaria, Paleacrita pometaria, and Ectropis pometaria. While the scientific name for the fall cankerworm may change over time, its role in the ecosystem as an important defoliator species remains constant.