TL: USA, Texas, New England
36-49 mm
Regional distr. - legend
- Local names
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Language Vernacular name 
EnglishHorace's Duskywing
- Primary hostplants
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Family Latin name Vernacular name Fagaceae Quercus gambelii Gambel oak Fagaceae Quercus ilicifolia Bear oak Fagaceae Quercus muehlenbergii Chinkapin oak Fagaceae Quercus nigra Water oak Fagaceae Quercus phellos Willow oak Fagaceae Quercus stellata Post oak Fagaceae Quercus texana Nuttall's oak Fagaceae Quercus velutina Eastern black oak Fagaceae Quercus virginiana Southern live oak
- Synonyms and other combinations
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Latin name Author Nisoniades horatius Scudder & Burgess, 1870 Nisoniades virgilius Scudder & Burgess, 1870 Nisoniades petronius Lintner, 1881
- Erynnis (Erynnides) horatius is a member of the clade Erynnis juvenalis:
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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 (E.) mercurius (Dyar, 1926)
- 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
Scanning the QR code below automatically opens the description page for this species. Placing this code on a specimen label, poster, or museum display board provides visitors with quick and easy access to full species details directly on their smartphones.
 | Extinct |
 | Extinct in the wild |
 | Critically endangered |
 | Endangered |
 | Vulnerable |
 | Near Threatened |
 | Least Concern |
 | Lower Risk |
 | Legally protected |
 | CITES |