32-35 mm
Regional distr. - legend
- Local names
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Language Vernacular name 
English (US)Buckthorn Duskywing English (US)Dyar's Duskywing English (US)Pacuvius Duskywing
- Primary hostplants
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Family Latin name Vernacular name Rhamnaceae Ceanothus California lilac Rhamnaceae Ceanothus fendleri Fendler ceanothus
- Synonyms and other combinations
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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:
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Species Author Erynnis (Erynnides) funeralis (Scudder & Burgess, 1870) Erynnis (Erynnides) martialis (Scudder, 1870) Erynnis (Erynnides) pacuvius (Lintner, 1878) Erynnis (Erynnides) zarucco (Lucas, 1857)
- Links
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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
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 | Extinct |
 | Extinct in the wild |
 | Critically endangered |
 | Endangered |
 | Vulnerable |
 | Near Threatened |
 | Least Concern |
 | Lower Risk |
 | Legally protected |
 | CITES |