Synonyms and other taxonomic changes
Eudryas unio – (Hübner, 
Explanation of Names
Species name unio is Latin for "onion" or "large pearl". The latter seems to be the context. (Based on Internet searches.)
Adult: dark band along outer margin of forewing is scalloped on the inside.
Eastern and central North America
usually found near marshy areas where both Epilobium and cattails (Typha) grow together.
adults fly June-August and later into fall in south
Larvae feed on Evening-primrose, grapes, other herbs.
Adults probably do not feed.
) dark band along outer margin of forewing is smoothly curved on the inside
Compare E. unio/E. grata:
Moth Photographers Group
- photos of living and pinned adults.
Lynn Scott, Ontario
live adult photos, description, foodplants, flight dates
pinned adult image (James Adams, Dalton State College)