| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Natricidae | Nerodia | 10212 |
| 2 | Natricidae | Storeria | 3925 |
| 3 | Natricidae | Haldea | 1186 |
| 4 | Natricidae | Regina | 311 |
| 5 | Natricidae | Rhabdophis | 258 |
| 6 | Natricidae | Xenochrophis | 206 |
| 7 | Natricidae | Liodytes | 122 |
| 8 | Natricidae | Virginia | 121 |
| 9 | Natricidae | Tropidoclonion | 117 |
| 10 | Natricidae | Hebius | 69 |
| 11 | Natricidae | Amphiesma | 56 |
| 12 | Natricidae | Opisthotropis | 44 |
| 13 | Natricidae | Tropidonophis | 41 |
| 14 | Natricidae | Sinonatrix | 40 |
| 15 | Natricidae | Macropisthodon | 18 |
| 16 | Natricidae | Aspidura | 16 |
| 17 | Natricidae | Clonophis | 15 |
| 18 | Natricidae | Atretium | 6 |
| 19 | Natricidae | Natriciteres | 6 |
| 20 | Natricidae | Herpetoreas | 1 |
| 21 | Natricidae | Balanophis | 1 |