Family Teiidae
- Description:
- 3" to 4" snout-vent length; to 15½" overall. Color cream to tan, with checkered pattern of black or dark brown blotches arranged in regular rows between lighter narrow stripes. Head long and triangular. Scales on back small and granular; scales on underside larger and rectangular.
- Elevation Range:
- Below 6900' in southeastern Colorado.
This species is parthenogenic, consisting almost entirely of females which are capable of reproducing without benefit of male fertilization. The species is thought to have originated relatively recently, from hybridization between an individual Western Whiptail (C. tigris) and a C. gularis, producing a self-reproducing population having one set of chromosomes from each parent (2N). A member of this population is then thought to have hybridized with a Six-lined Racerunner (C. sexlineatus), which formed the Triploid Colorado Checkered Whiptail C. neotesselatus, having three complete sets of chromosomes (3N).
We follow Walker et al. (1997) in recognizing C. neotesselatus as a distinct species from C. tesselatus.
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Photo from Hammerson, 1986. Used with permission.
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