An experimental analysis of the role of the tail in attaining high running speed in Cnemidophorus sexlineatus
(Reptilia: Squamata: Lacertilia).
Natural history of the six-lined racerunner (Cnemidophorus sexlineatus
Ecology and behavior of the six-lined racerunner, Cnemidophorus sexlineatus
racenmner (Cnemidophorus sexlineatus
[Linnaeus]) "is commonly found
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.
The extralimital slider turtle (Trachemys scripta, archaeological record) , and six-lined racerunner lizard (Cnemidophorus sexlineatus
which occurs in Michigan only in Tuscola County) may be relicts from the Middle Holocene warm, dr y period (hypsithermal).
These species were Bufo quercicus (oak toad), Bufo terrestris (southern toad), Gastrophryne carolinensis (narrow-mouth toad), Gopherus polyphemus (gopher tortoise), Anolis carolinensis (green anole), Cnemidophorus sexlineatus
(six-lined racerunner), Eumeces egregius (mole skink), Eumeces inexpectatus (southeastern five-lined skink), Neoseps reynoldsi (sand skink), Sceloporus woodi (Florida scrub lizard), Cemophora coccinea (Florida scarlet snake), Coluber constrictor (southern black racer), Masticophis flagellum (eastern coachwhip), Tantilla relicta (crowned snake), Aphelocoma coerulescens (Florida Scrub Jay), Cryptotis parva (least shrew), Peromyscus polionotus (oldfield mouse), and Podomys fioridanus (Florida mouse).
51 0.043 (13) 0.089 (39) Eumeces obsoletus 37 0.053 (16) 0.048 (21)
Ontogenetic and seasonal shifts in microhabitat use by the lizard Cnemidophorus sexlineatus
. Copeia 1988:1021-1029.
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.
It is suggested that the isolated population of the racerunner lizard (Cnemidophorus sexlineatus
) found in Tuscola County and nowhere else in the state, is a relict from the warm, xerophytic interval that occurred in the mid-Holocene.
Predation by the red imported fire ant, Solenopsis invicta (Hymenoptera: Formicidae), on eggs of the lizard Cnemidophorus sexlineatus