| Odonthalitus bisetanus Brown, 2000 |
| Odonthalitus conservanus Brown, 2000 |
| Odonthalitus fuscomaculatus Brown, 2000 |
| Odonthalitus improprius Brown, 2000 |
| Odonthalitus lacticus Razowski, 1991 |
| Odonthalitus mexicanus Razowski & Brown, 2004 |
| Odonthalitus orinoma (Walsingham, 1914) |
| Ofatulena Heinrich, 1926 |
| Ofatulena duodecemstriata (Walsingham, 1884) |
| Ofatulena luminosa Heinrich, 1926 |
| Olethreutes Hübner, 1822 |
| Olethreutinae Walsingham, 1895 |
| Orthocomotis Dognin, 1905 |
| Orthocomotis aphanisma (Razowski & Becker, 1990) |
| Orthocomotis chloantha (Walsingham, 1914) |
| Orthocomotis phenax Razowski & Becker, 1990 |
| Orthocomotis phenax subsp. phobetica Razowski & Becker, 1990 |
| Osmaria Razowski, 1991 |
| Osmaria psaeroptera (Razowski & Becker, 1986) |
| Paraptila Meyrick, 1912 |