Schemes including Thamnophis atratus atratus

• The Reptile Database (Thamnophis_atratus_atratus) Thamnophis atratus atratus
• NatureServe Explorer: An online encyclopedia of life. Version 7.1 (ELEMENT_GLOBAL.2.105853) Thamnophis atratus atratus
• GBIF (7061659) Thamnophis atratus atratus