[3] Acanthocephala terminalis is usually around 18–25 millimetres (0.71–0.98 in) long[1] with a dark gray to black color.

The fourth (and last) segment of their antennae have orange coloration, and the tibia of their hind legs have a flat, leaf-like, appearance.

[1] Acanthocephala terminalis is usually found in the eastern half of the United States and parts of southeast Canada.

[5] Acanthocephala terminalis will begin its mating period in late spring, and females will lay eggs on host plants.

[6] Food plants include staghorn sumac, riverbank grape, and ninebark.