| Referens | Tsang, L.M., Kei Kei, A. Ho and W.K. Chow, 2020 Field guide to indicator invertebrates of Hong Kong Reef Check. Agriculture, Fisheries and Conservation Department, The Chinese University of Hong Kong and Reef Check Foundation, 80 p. |
| Ref. | 125532 Tsang, L.M., Kei Kei, A. Ho and W.K. Chow, 2020 |
| Sida | 53-54 |
| Named Used as Valid | Protula bispiralis |
| Observationsplats | |
| Distribution | Hong Kong. |