Drymarchon is a genus of large nonvenomous colubrid snakes, commonly known as indigo snakes, endemic to the Southeastern United States, Central America, and South America. Three to four species are currently recognized.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0