| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Diaulula alba (White, 1952) |
Western Atlantic | 3.2 | |
| Diaulula farmersi Valdés, 2004 |
Western Atlantic | 1.6 | |
| Diaulula hispida (d'Orbigny, 1834) |
Southeast Pacific and Southwest Atlantic | 8 | |
| Diaulula hummelincki (Marcus & Marcus, 1963) |
Western Atlantic | 5 | |
| Diaulula punctuolata (d'Orbigny, 1836) |
Dotted bristle sea slug | Southeast Pacific and Southwest Atlantic | 10 |
| Diaulula sandiegensis (Cooper, 1863) |
Ringed doris | Pacific Ocean and the Arctic | 8 |