| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Thamnophis | sirtalis | 8154 |
| 2 | Thamnophis | proximus | 2899 |
| 3 | Thamnophis | elegans | 1584 |
| 4 | Thamnophis | marcianus | 1343 |
| 5 | Thamnophis | sauritus | 538 |
| 6 | Thamnophis | cyrtopsis | 482 |
| 7 | Thamnophis | atratus | 439 |
| 8 | Thamnophis | ordinoides | 312 |
| 9 | Thamnophis | radix | 289 |
| 10 | Thamnophis | hammondii | 230 |
| 11 | Thamnophis | eques | 93 |
| 12 | Thamnophis | scaliger | 89 |
| 13 | Thamnophis | scalaris | 76 |
| 14 | Thamnophis | butleri | 57 |
| 15 | Thamnophis | couchii | 48 |
| 16 | Thamnophis | melanogaster | 32 |
| 17 | Thamnophis | pulchrilatus | 27 |
| 18 | Thamnophis | validus | 18 |
| 19 | Thamnophis | brachystoma | 11 |
| 20 | Thamnophis | chrysocephalus | 11 |
| 21 | Thamnophis | errans | 8 |
| 22 | Thamnophis | gigas | 7 |
| 23 | Thamnophis | rufipunctatus | 7 |
| 24 | Thamnophis | bogerti | 4 |
| 25 | Thamnophis | conanti | 4 |
| 26 | Thamnophis | sumichrasti | 3 |
| 27 | Thamnophis | fulvus | 3 |
| 28 | Thamnophis | lineri | 3 |
| 29 | Thamnophis | exsul | 1 |
| 30 | Thamnophis | nigronuchalis | 1 |
| 31 | Thamnophis | mendax | 1 |