Agonum trigeminum, also known as triple harp ground beetle,[1] is a species of ground beetles, family Carabidae.

[1][3][4][5] It occurs in the eastern half of the North America in the Eastern United States and Eastern Canada.

[1][3][4] Agonum trigeminum measures 8.3–10 mm (0.33–0.39 in) in length and is deep black in color.

[2] It is associated with margins of eutrophic ponds and pools with dense vegetation.

This Platyninae-related article is a stub.