southwestern blackhead snake
Smith's black-headed snake
tantilla hobartsmithi latin

The southwestern blackhead snake (Tantilla hobartsmithi) is a species of small colubrid snake native to the southwestern United States and northern Mexico.

The southwestern blackhead snake is found in the southwestern United States, in Arizona, California, Colorado, Nevada, New Mexico, Texas, and Utah, as well as in northern Mexico, in Chihuahua, and Coahuila, and Sonora.