Included taxa
Ono, H. (1997b). New species of the genera Ryuthela and Tmarus (Araneae, Liphistiidae and Thomisidae) from the Ryukyu Islands, southwest Japan. Bulletin of the National Museum of Nature and Science Tokyo (A) 23: 149-163. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Ryuthela ishigakiensis | Liphistiidae | 150 (elevated from subspecies) | Ryuthela ishigakiensis |
| Ryuthela owadai | Liphistiidae | 155, f. 15-18 (Dm) | Ryuthela owadai |
| Ryuthela sasakii | Liphistiidae | 151, f. 1-8 (Dmf) | Ryuthela sasakii |
| Ryuthela sasakii | Liphistiidae | 153, f. 9-10 (Df) [urn:lsid:nmbe.ch:spidersp:000022] | Ryuthela secundaria |
| Ryuthela tanikawai | Liphistiidae | 157, f. 19-20 (Df) | Ryuthela tanikawai |
| Tmarus shimojanai | Thomisidae | 159, f. 23-29 (Dmf) | Tmarus shimojanai |
Genera
No genus found for this reference