The Dot-lined Angle Geometer Moth (Psamatodes abydata) is a species of moth in the family Geometridae, commonly known as the geometer moths. The Geometridae family is known for its distinctive wing patterns and the characteristic looping movement of their larvae, which gives them the name "geometer" (meaning "earth measurer"). As a typical geometer moth, Psamatodes abydata is nocturnal and most active at night, flying around to find mates or feed.