Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Information about the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Species Eudryas unio - Pearly Wood-Nymph - Hodges#9299

Eudryas unio Eudryas unio pearly wood-nymph - Eudryas unio Eudryas unio 9299    Pearly Wood-nymph Moth     Eudryas unio - Eudryas unio Pearly Wood-Nymph - Eudryas unio Some sort of slug moth maybe? - Eudryas unio Caterpillar - Eudryas unio
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Noctuidae (Owlet Moths)
Subfamily Agaristinae
Genus Eudryas (Wood Nymphs)
Species unio (Pearly Wood-Nymph - Hodges#9299)
Hodges Number
Synonyms and other taxonomic changes
Eudryas unio – (Hübner, [1831]
Explanation of Names
Species name unio is Latin for "onion" or "large pearl". The latter seems to be the context. (Based on Internet searches.)
Wingspan 26-35 mm (1)
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.
See Also
Beautiful Wood-Nymph (Eudryas grata) dark band along outer margin of forewing is smoothly curved on the inside
Compare E. unio/E. grata:
Print References
Covell, p. 139, plate 27 (1)
Internet References
Moth Photographers Group - photos of living and pinned adults.
Lynn Scott, Ontario live adult photos, description, foodplants, flight dates
Georgia Leps pinned adult image (James Adams, Dalton State College)
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.