• Local names

• Language	Vernacular name
  English (US)	Buckthorn Duskywing
  English (US)	Dyar's Duskywing
  English (US)	Pacuvius Duskywing

• Synonyms and other combinations

• Latin name	Author
  Nisoniades pacuvius	Lintner, 1878
  Thanaos callidus	Grinnell, 1904
  Thanaos lilius	Dyar, 1904
  Thanaos pernigra	Grinnell, 1905

• Erynnis (Erynnides) pacuvius is a member of the clade Erynnis martialis:

• Species	Author
  Erynnis (Erynnides) funeralis	(Scudder & Burgess, 1870)
  Erynnis (Erynnides) martialis	(Scudder, 1870)
  Erynnis (Erynnides) pacuvius	(Lintner, 1878)
  Erynnis (Erynnides) zarucco	(Lucas, 1857)

• Links

• Language	Website	Authors
  	Butterflies and Moths of North America
  	Butterflies of America	A.Warren, K.Davis, M.Stangeland
  	Butterflies of Canada
  	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.