Included taxa
Yoshida, H. (2001b). The spider genera Robertus, Enoplognatha, Steatoda and Crustulina (Araneae: Theridiidae) from Japan. Acta Arachnologica 50: 31-48. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Clubiona parvula | Clubionidae | 41 (Tm from Steatoda) | Clubiona parvula |
| Crustulina guttata | Theridiidae | 47, f. 53-55 (mf) | Crustulina guttata |
| Crustulina sticta | Theridiidae | 47, f. 56-58 (mf) | Crustulina sticta |
| Enoplognatha abrupta | Theridiidae | 38, f. 24-29 (f, Sm) | Enoplognatha abrupta |
| Enoplognatha caricis | Theridiidae | 37, f. 18-23 (mf, S) | Enoplognatha tecta |
| Enoplognatha lordosa | Theridiidae | 40, f. 30-32 (m) | Enoplognatha lordosa |
| Enoplognatha margarita | Theridiidae | 36, f. 12-17 (mf, S of Enoplognatha submargarita; rejected by Zamani & Marusik, 2021c: 958) | Enoplognatha margarita |
| Leptorhoptrum robustum | Linyphiidae | 34, f. 7-11 (Dm) | Robertus yasudai |
| Robertus kastoni | Theridiidae | 33, f. 5-6 (m) | Robertus kastoni |
| Robertus sibiricus | Theridiidae | 32, f. 1-4 (mf) | Robertus sibiricus |
| Steatoda albomaculata | Theridiidae | 43, f. 43-45 (mf) | Steatoda albomaculata |
| Steatoda cingulata | Theridiidae | 41, f. 33-38 (mf) | Steatoda cingulata |
| Steatoda erigoniformis | Theridiidae | 45, f. 49-52 (mf) | Steatoda erigoniformis |
| Steatoda grossa | Theridiidae | 43, f. 39-42 (mf) | Steatoda grossa |
| Steatoda japonica | Theridiidae | 41 (does not belong to Steatoda, nomen dubium) | Steatoda japonica |
| Steatoda minor | Theridiidae | 41 (does not belong to Steatoda, nomen dubium) | Steatoda minor |
| Steatoda triangulosa | Theridiidae | 44, f. 46-48 (mf) | Steatoda triangulosa |
Genera
No genus found for this reference