About Sonora semiannulata Baird & Girard, 1853
Sonora semiannulata, commonly known as the western ground snake, reaches a total length including the tail of 8 to 19 inches, or 20.3 to 48.3 centimeters. This species displays very wide variation in color and patterning. Individual snakes can be brown, red, or orange, and may have black banding, orange or brown striping, or a completely solid-colored body. The underside is typically white or gray. It has smooth dorsal scales, a small head, and round eye pupils. S. semiannulata is native to the Southwestern United States, where it occurs in Arizona, Nevada, California, Colorado, Kansas, Missouri, New Mexico, Oklahoma, Oregon, Texas, and Utah. It is also found in northern Mexico, in the states of Chihuahua, Coahuila, Durango, Nuevo León, and Sonora. The western ground snake prefers dry, rocky habitats with loose soil. This species is oviparous, and carries out breeding and egg laying throughout the summer months.
