Topographical map with physiographic provinces of the state of San Luis Potosí, Mexico. The thicker black lines delineate the major habitat types found in San Luis Potosí (from west to east): Central Plateau, Sierra Madre Oriental, and North Gulf Coastal Plains (INEGI 2009). Maps modified from Cervantes-Zamora et al. (1990); http://www.gifex.com/fullsize/2009-09-17-3/Mapa-de-Amrica.html; García E – Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (2008).