The Western patch-nosed snake, Salvadora hexalepis, is a nonvenomous colubrid snake found in southwestern U.S.A, and northern Mexico.


Adults are, on average, 20-46 inches long (record 58 inches[1]), and have a distinctive, thick scale curved back over the top of the snout, and free at the edges[2]. Four subspecies are recognized, all of which are yellowish with blackish lateral stripes in various arrangements. The dorsal scales are smooth, and the anal plate is divided.


The Western patch-nosed snake inhabits the arid deserts in its area. It feeds upon lizards, snakes, reptile eggs, and small rodents[3].


4-10 eggs are laid during spring or early summer and hatch in August through September.

  1. Bogert, C.M. 1939. A Study of the Genus Salvadora, the Patch-nosed Snakes. Publ. Univ. Calif. at Los Angeles, Biol., vol. I, pp. 177-236.
  2. Schmidt, Karl P. & D. Dwight Davis. 1941. Field Book of Snakes of the United States and Canada. G.P. Putnam's Sons. New York
  3. Conant, Roger. 1975. A Field Guide to Reptiles and Amphibians of Eastern and Central North America. Houghton Mifflin. Boston

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