| Citation | Miyake, S., 1939 Note on crabs of the genus Echinoecus Rathbun living commensally with echinoids (Parthenopidae, Eumedoninae). Annotationes Zoologicae Japonenses 18:83-94. |
| Ref. | 75251 Miyake, S., 1939 |
| Page | 84, 88 |
| Named Used as Valid | Echinoecus pentagonus |
| Locality | |
| Distribution | Nhatrang, Vietnam. |