Table 2. Tests for neutral molecular evolution.
| taxon | unit | N | H | Tajima's D | Fu's Fs |
| CM | complete | 325 | 39 | −0.975 | −6.461 |
| MOTU1 | 160 | 17 | −1.784* | −8.521* | |
| MOTU2 | 13 | 2 | 0.782 | 7.801 | |
| MOTU3 | 28 | 5 | 0.644 | 1.034 | |
| MOTU4 | 105 | 9 | −1.656* | −3.232 | |
| MOTU5 | 19 | 6 | 0.516 | 2.683 | |
| CT | complete | 417 | 39 | −1.587* | −18.265* |
| MOTU1 | 270 | 14 | −1.977* | −18.308* | |
| MOTU2 | 5 | 2 | −0.817 | 0.090 | |
| MOTU3 | 18 | 4 | −0.110 | 1.143 | |
| MOTU4 | 22 | 4 | 1.115 | 2.312 | |
| MOTU5 | 70 | 7 | −0.216 | −0.889 | |
| MOTU6 | 24 | 4 | −1.279* | −1.936 | |
| MOTU7 | 7 | 3 | −0.330 | 1.222 | |
| MOTU8 | 1 | 1 | n. c. | n. c. |
Tajima's D and Fu's Fs neutrality tests for the complete COI-datasets and single molecular operational taxonomic units (MOTUs) of Carychium minimum (CM) and C. tridentatum (CT). Significantly deviating values from zero are indicated in bold and marked by an asterisk; n. c. = not calculable.