The Serpentine Webworm Moth (Herpetogramma aeglealis) is a species of moth

Moth

A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the family Crambidae

Crambidae

The Crambidae are the grass moth family of Lepidoptera . They are quite variable in appearance, the nominal subfamily Crambinae taking up closely folded postures on grass-stems where they are inconspicuous, while other subfamilies include brightly coloured and patterned insects which rest in...

. It is found in eastern North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

.
The wingspan

Wingspan

The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

is 29-34 mm for males and 27-31 mm for females. 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. Females have a golden hue. There are two form, a darker and a typical form.

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