| Reference no. | Oliver, W.R.B., 1914 |
| Ecosystem | Kermadec Island |
| Status | endemic |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Type locality, near Sunday Island (holotype of Caecum solitarium, 0.27 cm ShL, 0.04 cm at anterior end, and 0.03 cm at the posterior ShD) (Ref. 88739). C: Ref. 88739; O: Ref. 88739. |