| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Macrostomum brandi Wang & Shi, 2022 |
Eastern Indian Ocean | ||
| Macrostomum curvituba Luther, 1947 |
Northeast Atlantic and the Arctic | ||
| Macrostomum littorale Wang & Shi, 2022 |
Northwest Pacific | ||
| Macrostomum shekouense Wang & Shi, 2022 |
Northwest Pacific |