Herpetogramma aeglealis, commonly known as the serpentine webworm moth, is a species of moth in the family Crambidae.

It was first described by Francis Walker in 1859 and is found in eastern North America.

Adults are sexually dimorphic.

The hindwings of the males are dirty white with dark grey shading on the discal spot, wing veins, subterminal area and an irregular but contrasting postmedial line.

The larvae have been reared on a variety of herbaceous plants including ragwort, ferns, goldenrod, raspberry, pokeweed, wild ginger, and mayapple.