Map of the study area with localization of the sampling sites along the Álamos and Sabinas River in Coahuila and Nazas River in Durango. Sampling sites as in Table 1.

 
 
  Part of: Czaja A, Cardoza-Martínez GF, Meza-Sánchez IG, Estrada-Rodríguez JL, Saenz-Mata J, Becerra-López JL, Romero-Méndez U, Estrada-Arellano JR, Garza-Martínez MA, Paulín JAD (2019) New genus, two new species and new records of subterranean freshwater snails (Caenogastropoda; Cochliopidae and Lithoglyphidae) from Coahuila and Durango, Northern Mexico. Subterranean Biology 29: 89-102. https://doi.org/10.3897/subtbiol.29.34123