| Reference no. | McLay, C., 2007 |
| Ecosystem | Kermadec Island |
| Status | endemic |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Type locality, Macauley Caldera, 161 m (holotype of Xenograpsus ngatama, male, 1.6 cm CW x 1.56 cm CL). Known from Macauley Caldera and northwest of Kermadec Ridge (Ref. 88737). C: Ref. 89503; O: Ref. 88737. |