| Common Name | Purple rock crab |
| Language | English |
| Type | Vernacular |
| Official Trade Name | No |
| Rank | 2 - (Preferred common name (unique)) |
| Country | New Zealand |
| Locality | |
| Ref. | McLay, C. L. and C. D. Schubart, 2004 |
| Life Stage | juveniles and adults |
| Sex | females and males |
| Core | morphology |
| 1st Modifier | habitat/ecology |
| 2nd Modifier | color pattern(s) |
| Remarks | 'crab' from Old English 'ceorfan', i.e., 'to curve'. 'rock', from Old English 'rocc', i.e., 'stone', used to describe the habitat where it is usually found. |