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Any of several swift teiid lizards, especially Aspidoscelis sexlineata (syn. Cnemidophorus sexlineatus) of the United States and northern Mexico, having a brownish body with longitudinal light-colored stripes.


(ˈreɪsˌrʌn ər)

a whiptail lizard, Cnemidophorus sexlineatus, common in the eastern and central U.S., that runs with great speed.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.racerunner - very swift lizard of eastern and central United Statesracerunner - very swift lizard of eastern and central United States
whiptail, whiptail lizard - any of numerous very agile and alert New World lizards
References in periodicals archive ?
Natural history of the six-lined racerunner (Cnemidophorus sexlineatus).
Aspidoscelis neotesselata is a parthenogenetic species that originated as the result of hybridization between a diploid unisexual Common Checkered Whiptail (Aspidoscelis tesselata), and a diploid sexual species, Six-lined Racerunner (A.
As a specialised supplier of mass storage combined with data acceleration software, WhipTail's Racerunner uses OCZ's SSDs as building blocks into a reliable and performance oriented platform.
Ecology and behavior of the six-lined racerunner, Cnemidophorus sexlineatus.
maculosus), Eastern Slender Glass Lizard (Ophisaurus attenuatus longicaudus), Southeastern Five-lined Skink (Eumeces inexpectatus), Broad-headed Skink (Eumeces laticeps), Eastern Six-lined Racerunner (Aspidoscelis sexlineata sexlineata), Northern Scarlet Snake (Cemophora coccinea copei), Red Cornsnake (Elaphe guttata), Milksnake (Lampropeltis triangulum), Southeastern Crowned Snake (Tantilla coronata), Eastern Hog-nosed Snake (Heterodon platirhinos), Eastern River Cooter (Pseudemys c.
Aspidoscelis sexlineata (Linnaeus, 1766), Six-lined Racerunner (I)
The six-lined racerunner (Cnemidophorus sexlineatus), bullsnake (Pituophis melanoleucus), and eastern hognose snake (Heterodon platirhinus) were also relatively common; however, I observed each in only two counties in northwest Indiana.
Already Blankinship has reports of use by many reptiles and amphibians in the newly planted habitats: Texas tortoise and Texas indigo snake, both endangered in the state; the giant toad, threatened in Texas; Gulf Coast toad; checkered whiptail; six-lined racerunner.
on the basis of size (small and large dentaries), it is likely that the fossils represent two or more species of Cnemidophorus, one in the size range of the Recent six-lined racerunner C.
Diet of the Texas yellow-faced racerunner, Cnemidophorus sexlineatus stephensi (Sauria: Teiidae), in southern Texas.
spinifera (LeSueur), spiny softshell I Order Squamata (lizards and snakes) Family Iguanidae (iguanids) Sceloporus undulatus Latreille, eastern S fence lizard Family Anguidae (glass lizards) Ophisaurus attenuatus Cope, NW slender glass lizard Family Teiidae (whiptails) Cnemidophorus sexlineatus NW, SW (Linnaeus), six-lined racerunner Family Scincidae (skinks) Eumeces fasciatus (Linnaeus), I five-lined skink E.