Head drawings of the holotype of Thamnophis ahumadai sp. nov. (INIRENA 2933). A solid line depicts 1 cm. Drawings by Iván T. Ahumada-Carrillo.

 
 
  Part of: Grünwald CI, Mendoza-Portilla MdelCG, Grünwald AJ, Montaño-Ruvalcaba C, Franz-Chávez H, García-Vázquez UO, Reyes-Velasco J (2024) A new species of Thamnophis (Serpentes, Colubridae) from Jalisco, Mexico, with a discussion on the phylogeny, taxonomy, and distribution of snakes related to Thamnophis scalaris. Herpetozoa 37: 157-179. https://doi.org/10.3897/herpetozoa.37.e122213