Once common, today the Tucson shovel nosed snake, C. o. klauberi, can be difficult to find.
The insectivorous (some arachnids are also eaten) genus Chionactis, the shovel-nosed snakes, contains 2 fossorial species, palarostris and occipitalis. The former, the Sonoran shovel-nose, Chionactis palarostris, contains 2 subspecies (palarostris and organica) while the western shovelnose, C. occipitalis, contains 4 (occipitalis, annulata, klauberi, and talpina) .

The ground color of both species is white (or cream or yellow), with well separated saddles of black or brown and (often) saddles, or at least a hint, of red (or orange) alternating with the black. Some saddles, especially the dark ones, may extend ventrally and encircle the body. Colors and patterns vary both subspecifically and individually.

These small (14-17 inches), slender, burrowers feed on insects and arachnids. Seldom seen (unless flipped) by day, they are often found above ground at night and can be remarkably abundant when atmospheric conditions are ideal.

Rarely seen in the United States, the range of Chionactis palarostris, includes nwSN and extreme scAZ. Conversely, C. occipitalis, the western shovel-nose, ranges primarily in the sw USA (scAZ and scCA northward to sNV), entering MX only in nBaja and nwSN.