Ficimia streckeri, commonly known as the Mexican hooknose snake or Tamaulipan hooknose snake, is a small species of colubrid snake. It is endemic to northeastern Mexico and the adjacent southwestern United States.
It is typically brown or gray in color, with as many as 60 brown or brown-green blotches down the back, which are elongated to almost appear as stripes. Its underside is white or cream-colored.
Its most distinctive feature is an upturned snout, much like hognose snakes, which gives it its common name. However, unlike hognose snakes, Mexican hooknose snakes have smooth dorsal scales. Also distinctive is the arrangement of the head shields. There are no internasals, and the rostral separates the prefrontals and contacts the frontal.
They inhabit woodlands along the Rio Grande river plain, near natural and man-made sources of water.
Its primary form of defense is making a popping sound by expanding its cloaca when harassed or handled.
Mexican hooknose snakes are oviparous.
- Beltz, Ellin. 2006. Scientific and Common Names of the Reptiles and Amphibians of North America - Explained. www.ebeltz.net/herps/biogappx.html#S.
- Smith, H.M., and E.D. Brodie, Jr. 1982. Reptiles of North America: A Guide to Field Identification. Golden Press. New York. 240 pp. ISBN 0-307-13666-3. (Ficimia streckeri, pp. 174-175.)
- Schmidt, K.P., and D.D. Davis. 1941. Field Book of Snakes of the United States and Canada. G.P. Putnam's Sons. New York. 365 pp. (Ficimia streckeri, p. 203.)
- Wright, A.H., and A.A. Wright. 1957. Handbook of Snakes of the United States and Canada. Comstock. Ithaca and London. 1,105 pp. (in 2 volumes) (Ficimia olivacea streckeri, pp. 279-282, Figure 86., Map 26.)
- Conant, R. 1975. A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition. The Peterson Field Guide Series. Houghton Mifflin. Boston. 429 pp. (Ficimia streckeri, pp. 216-217 + Plate 33 + Map160.)
Taylor, E.H. 1931. Notes on Two Specimens of the Rare Snake Ficimia cana and the Description of a New Species of Ficimia from Texas. Copeia 1931 (1): 4-7.