Tantilla rubra, also known commonly as the red black-headed snake, the Big Bend black-headed snake, and la rojilla in Spanish, is a species of snake in the subfamily Colubrinae of the family Colubridae. The species is native to southern Mexico and western Guatemala.
Tantilla rubra is found in the Mexican states of Chiapas, Guanajuato, Guerrero, Hidalgo, Nuevo León, Oaxaca, Puebla, Querétaro, San Luis PotosÃÂ, and Tamaulipas and in western Guatemala.
The preferred natural habitat of Tantilla rubra is forest, at altitudes from sea level to .
Tantilla rubra is terrestrial.
Tantilla rubra is oviparous.