THE CENTER FOR NORTH AMERICAN HERPETOLOGY
Reptilia
Squamata (part)
Scincidae
Gilbert's Skink
Plestiodon gilberti
(Van Denburgh, 1896)
Current SSAR Comments:
Richmond and Reeder (2002, Evolution 56: 1498–1513) presented mtDNA evidence that populations previously referred to
P. gilberti
represent three lineages that separately evolved large body size and the loss of stripes in late ontogenetic stages. Although they considered those three lineages to merit species recognition, they did not propose specific taxonomic changes. Subsequently, Richmond and Jockusch (2007, Proceeding of the Royal Society of London B 274: 1701–1708) and Richmond et al. (2011, American Naturalist 178: 320–332) have treated them as a single species based on extensive introgressive hybridization between two of the forms and the lack of prezygotic isolation between members of all pairs of them. The results of Richmond and Reeder (
op. cit.
) contradict the recognition of
P. g. arizonensis
, which is not differentiated from
P. g. rubricaudatus
and therefore has been eliminated from this list and indicate the existence of an unnamed and at least partially separate lineage within
P. g. rubricaudatus
(their clade C or Inyo clade). In addition, those results suggest that the former subspecies
P. g. gilberti
and
P. g. placerensis
form a single unit (their clade I or Sierran clade), while
P. g. cancellosus
and
P. g. rubricaudatus
also form a single unit (their clade A or southwestern clade), findings that are consistent with large areas of intergradation between the pairs of forms (e.g., Jones, 1985, Catalogue of American Amphibians and Reptiles. 372.1–3). We, therefore, recognize only three subspecies corresponding to the three lineages inferred by Richmond and Reeder (
op. cit.
).
Range maps are based on curated specimens and provided gratis by CNAH.
(Created by Travis W. Taggart; Version: 2023.04.10.08.04.16)
Download GeoJSON polygon range file:
- 1.75 MB
First instance(s) of published English names:
Red-headed Skink
(
Eumeces gilberti
: Van Denburgh, John.
1897
. The reptiles of the Pacific Coast and Great Basin: An account of the species known to inhabit California, and Oregon, Washington, Idaho, and Nevada. Occasional Papers of the California Academy of Sciences 5():9-236);
Gilbert's Skink
(
Eumeces gilberti
: Schmidt, Karl P.
1953
. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.);
Alameda Skink
(
Eumeces gilberti cancellosus
: Schmidt, Karl P.
1953
. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.);
Greater Western Skink
(
Eumeces gilberti gilberti
: Schmidt, Karl P.
1953
. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.);
Western Red-tailed Skink
(
Eumeces gilberti rubricaudatus
: Schmidt, Karl P.
1953
. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.);
Taxon Links:
Catalog of American Amphibians and Reptiles
The Reptile Database
NatureServe
iNaturalist
GenBank
USGS - Nonindigenous Aquatic Species Database
Pertinent LIterature:
1896
Van Denburgh, John. A list of some reptiles from Southeastern Arizona, with a description of a new species of
Cnemidophorus
. Proceedings of the California Academy of Sciences 2(6):338-349
THE CENTER FOR NORTH AMERICAN HERPETOLOGY — Accessed:
Thursday 30 January 2025 02:25
CT