| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Iwatanemertes piperata | (Stimpson, 1855) | accepted name | Yes | senior synonym |
new combination |
| ! Iwatanemertes piperatus | (Stimpson, 1855) | synonym | No | senior synonym |
new combination |
| Lineus piperatus | (Stimpson, 1855) | synonym | No | senior synonym |
new combination |
| Meckelia piperata | Stimpson, 1855 | synonym | No | senior synonym |
original combination |