• Local names

• Language	Vernacular name
  English	Mournful Duskywing

• Synonyms and other combinations

• Latin name	Author
  Thanaos tristis	Boisduval, 1852
  Thanaos tatius	Edwards, 1883
  Thanaos albomarginatus	Godman, 1899

• Erynnis (Erynnides) tristis is a member of the clade Erynnis juvenalis:

• Species	Author
  Erynnis (Erynnides) horatius	(Scudder & Burgess, 1870)
  Erynnis (Erynnides) juvenalis	(Fabricius, 1793)
  Erynnis (Erynnides) meridianus	Bell, 1927
  Erynnis (Erynnides) scudderi	(Skinner, 1914)
  Erynnis (Erynnides) telemachus	Burns, 1960
  Erynnis (Erynnides) tristis	(Boisduval, 1852)
  Erynnis (Erynnis) mercurius	(Dyar, 1926)

• Links

• Language	Website	Authors
  	Butterflies and Moths of North America
  	Butterflies of America	A.Warren, K.Davis, M.Stangeland
  	North American Moth Photographers Group

The QR code below, when scanned, automatically opens a page with a description of this species. Placing the code on a label under the specimen, on poster or information board in a museum or exhibition will allow for quick and easy display of full information about the species on the smartphone of the interested person.