Cribos (Drymarchon)
Lower Classification
- Indigo snake, yellow-tailed indigo snake (Drymarchon corais)
- Falcon indigo snake (Drymarchon caudomaculatus)
- Eastern indigo snake (Drymarchon couperi)
- Margarita indigo snake (Drymarchon margaritae)
- Middle American indigo snake (Drymarchon melanurus)
- Black-tailed cribo (Drymarchon melanurus melanurus)
- Texas indigo snake (Drymarchon melanurus erebennus)
- Orizaba indigo snake (Drymarchon melanurus)
- Mexican red-tailed indigo snake (Drymarchon melanurus)
- Unicolor cribo (Drymarchon melanurus unicolor)