Species list for Gnathonarium
| Taxon | Author | Action | Last updated |
|---|---|---|---|
| 1. Gnathonarium biconcavum | Tu & Li, 2004 | Catalog | - - |
| 2. Gnathonarium dentatum * | (Wider, 1834) | Catalog | 2025-01-05 |
| 3. Gnathonarium exsiccatum | (Bösenberg & Strand, 1906) | Catalog | 2024-12-19 |
| 4. Gnathonarium gibberum | Oi, 1960 | Catalog | 2023-06-13 |
| 5. Gnathonarium luzon | Tanasevitch, 2017 | Catalog | 2017-02-14 |
| 6. Gnathonarium suppositum | (Kulczyński, 1885) | Catalog | 2023-08-22 |
| 7. Gnathonarium taczanowskii | (O. Pickard-Cambridge, 1873) | Catalog | 2023-08-22 |