Identity
Unique IDELEMENT_GLOBAL.2.100223
Element CodeARACH01090
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVertebrate Animal
IUCNLeast concern
Endemicendemic to a single nation
KingdomAnimalia
PhylumCraniata
ClassReptilia
OrderSquamata
FamilyScincidae
GenusPlestiodon
SynonymsEumeces multivirgatus(Hallowell, 1857)
Concept ReferenceBrandley, M. C., H. Ota, T. Hikida, A.Nieto, M. De Oca, M. Feria-Ortiz, X. Guo, and Y. Wang. 2012. The phylogenetic systematics of blue-tailed skinks (Plestiodon) and the family Scincidae. Zoological Journal of the Linnean Society 165(1):163-189.
Taxonomic CommentsFormerly in the genus Eumeces. Smith (2005) and Brandley et al. (2005) formally proposed that all North American species (north of Mexico) be placed in the genus Plestiodon. In a phylogenetic analysis of Eumeces based on morphology, Griffith et al. (2000) proposed splitting Eumeces into multiple genera, based on the apparent paraphyly of Eumeces.
There has been disagreement over whether the southern subspecies should be called E. m. epipleurotus or E. m. gaigeae (see Hammerson 1999). The name eplipleurotus went long unused but has priority, and a recent informal ICZN evaluation concluded that epipleurotus is the name that should be used (Axtell and Smith 2004). Hammerson (1999) suggested that the variable skink (subspecies epipleurotus) might be a distinct species; genetic study is needed to resolve the question.
Conservation Status
Review Date2005-08-26
Change Date1996-10-28
Edition Date2005-08-26
Edition AuthorsHammerson, G.
Threat ImpactMedium
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 - 300
Range Extent CommentsThe northern part of the geographic range includes southern South Dakota, Nebraska, southeastern Wyoming, and northeastern Colorado; the southern segment encompasses southern Colorado, southeastern Utah, Arizona, New Mexico, western Texas, and possibly Chihuahua. Elevational range is 910-2,620 meters (3,000-8,600 feet) (Stebbins 2003).
Occurrences CommentsThis species is represented by a large number of occurrences or subpopulations. For example, Degenhardt et al. (1996) mapped 70-75 collection sites in New Mexico. Hammerson (1999) mapped about 60 localities in Colorado. The species is secretive and undoubtedly occurs in sites not yet documented.
Threat Impact CommentsIn prairie and shrubland regions, conversion of habitat to agricultural uses has caused local declines.