Coluber constrictor etheridgei

Coluber constrictor etheridgei, commonly known as the tan racer, is a nonvenomous colubrid snake, a subspecies of the eastern racer (Coluber constrictor). It is endemic to the southern United States.

Coluber constrictor etheridgei
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Coluber
Species:
C. constrictor
Subspecies:
C. c. etheridgei
Trinomial name
Coluber constrictor etheridgei
Wilson, 1970

Geographic range

C. c. etheridgei is found in Louisiana and Texas.

Etymology

The subspecific name or epithet, etheridgei, is in honor of the American zoologist and paleontologist Richard Emmett Etheridge.[1]

Description

The tan racer, as its name implies, is typically a solid tan in color. Juveniles have a pattern of dark brown dorsal blotches, which fade to solid tan at about a year of age. The underside is typically gray or white, sometimes with yellow spotting. It typically grows from .75 – 1.5 m (30 to 60 inches) in total length (including tail). It has large eyes, with round pupils, and excellent vision.

Behavior

Like all racers, the tan racer is diurnal and highly active. Its diet consists of a wide variety of prey, but primarily includes rodents, and lizards. It is fast moving, and generally seeks to use its speed to escape if approached.

Habitat

The tan racer prefers habitats of pine flatwoods.

Reproduction

Mating occurs in the spring, and a clutch of approximately 30 eggs is laid typically in the month of May, to hatch mid summer.

References
  1. Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Coluber constrictor etheridgei, p. 86).

Further reading
  • Behler JL, King FW (1979). The Audubon Society Field Guide to North American Reptiles and Amphibians. New York: Alfred A. Knopf. 743 pp., 657 color plates. ISBN 0-394-50824-6. (Coluber constrictor etheridgei, p. 597).
  • Powell R, Conant R, Collins JT (2016). Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, Fourth Edition. Boston and New York: Houghton Mifflin Harcourt. xiv + 494 pp., 47 plates, 207 figures. ISBN 978-0-544-12997-9. (Coluber constrictor etheridgei, pp. 369-370).
  • Smith HM, Brodie ED Jr (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN 0-307-13666-3. (Coluber constrictor etheridgei, p. 190).
  • Wilson LD (1970). "The racer Coluber constrictor (Serpentes: Colubridae) in Louisiana and eastern Texas". Texas Journal of Science 22 (1): 67–85. (Coluber constrictor etheridgei, new subspecies).


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