• Actea Walker, 1854 (preocc. Germar, 1842)
• Mitradaemon Butler, 1878
• Retila Boisduval, 1870

Ephialtias is a genus of moths of the family Notodontidae. It consists of the following species:

• abrupta species group:
  • Ephialtias abrupta (Hübner, 1806)
  • Ephialtias choba (Druce, 1899)
  • Ephialtias consueta (Walker, 1854)
  • Ephialtias dorsispilota Warren, 1905
  • Ephialtias monilis (Hübner, 1806)
  • Ephialtias pseudena (Boisduval, 1870)
  • Ephialtias velutinum (Butler, 1878)
• bryce species group:
  • Ephialtias bryce (Walker, 1854)
  • Ephialtias draconis (Druce, 1885)
  • Ephialtias tenuifascia (Prout, 1918)

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