Table 1.
Summary of taxa studied: a = number of known species in New Zealand/Chatham Is.; b = number of species endemic to Chatham Is.; c = number of species included in this study; NZ = New Zealand; Ch.Is. = Chatham Islands; Genetic dist. = maximum uncorrected genetic distances between sister taxa in NZ and Ch.Is.
| Order | Common name | Taxon | a | b | c | NZ habitat | Ch.Is. habitat | Genetic dist. (%) |
|---|---|---|---|---|---|---|---|---|
| Orthoptera | cave cricket | Talitropsis | (3/2) | 2 | 3 | forest | not specific | 4.7 |
| Orthoptera | grasshopper | Phaulacridium | (2/1) | 0 | 2 | open grassland | open grassland | 1.8 |
| Dermaptera | earwig | Anisolabis | (3/1) | 0 | 3 | coastal | coastal | 2.9 |
| Blattodea | cockroach | Celatoblatta | (13/1) | 1 | 12 | not specific | not specific | 3.7 |
| Coleoptera | carabid beetle | Mecodema | (66/1) | 0 | 35 | not specific | not specific | 2.9 |
| Coleoptera | stag beetle | Geodorcus | (7/2) | 2 | 5 | forest | not specific | 14.1 |
| Coleoptera | weevil | Hadramphus | (4/1) | 1 | 3 | host plant | host plant | 4.0 |
| Coleoptera | click beetle | Amychus | (3/1) | 1 | 3 | forest | not specific | 9.6 |