Anageshna primordialis, the yellow-spotted webworm, is a species of moth of the Crambidae family. It is found in Alabama, Arkansas, Arizona, Florida, Georgia, Iowa, Illinois, Kansas, Louisiana, Massachusetts, Maryland, Maine, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, Texas, Virginia and West Virginia.
The wingspan is about 11 mm. Adults are on wing from August to November.
Hosts plants are unknown.