The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T64116A12745692
Sceloporus jarrovi, Mountain Spiny Lizard
Assessment by: Hammerson, G.A., Vazquez Díaz, J. & Quintero Díaz, G.E.
View on www.iucnredlist.org
Citation: Hammerson, G.A., Vazquez Díaz, J. & Quintero Díaz, G.E. 2007. Sceloporus jarrovi. The
IUCN Red List of Threatened Species 2007: e.T64116A12745692.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
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THE IUCN RED LIST OF THREATENED SPECIES™
Taxonomy
Kingdom
Phylum
Class
Order
Family
Animalia
Chordata
Reptilia
Squamata
Phrynosomatidae
Taxon Name: Sceloporus jarrovi Cope, 1875
Synonym(s):
• Sceloporus lineolateralis
Common Name(s):
• English:
Mountain Spiny Lizard, Yarrow's Spiny Lizard
Taxonomic Notes:
Wiens and Penkrot (2002) examined variation in S. jarrovii using morphological and DNA data and found
that three approaches each supported division of S. jarrovii into five species, but only two species were
the same among the three approaches. They found the greatest support for the five species that were
delimited by mtDNA data. Following Wiens and Penkrot (2002) and Wiens et al. (1999), S. jarrovii occurs
in Arizona, New Mexico, and Mexico and the other four species (S. cyanostictus, S. minor, S. oberon, and
S. sugillatus) occur in Mexico. These species do not strictly conform with traditional subspecies
circumscriptions. We currently follow Wiens and Penkrot (2002) in retaining S. lineolateralis within S.
jarrovi.
Assessment Information
Red List Category & Criteria:
Least Concern ver 3.1
Year Published:
2007
Date Assessed:
March 1, 2007
Justification:
Listed as Least Concern in view of the relatively large and stable extent of occurrence, area of
occupancy, number of subpopulations, and population size. No major threats have been identified.
Geographic Range
Range Description:
Southeastern Arizona and extreme southwestern New Mexico south into Mexico, south to Durango and
Zacatecas according to the systematic arrangement of Wiens and Penkrot (2002). Elevational range is
about 1,370 to 3,550 m (4,500 to 11,600 feet) (Stebbins 2003). At the northern end of the range, this
lizard occurs on major mountain ranges and certain minor mountain ranges (e.g., Winchester
Mountains, Galiuro Mountains) (see Rosen and Persons 2002).
Country Occurrence:
Native: Mexico; United States
© The IUCN Red List of Threatened Species: Sceloporus jarrovi – published in 2007.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
1
Distribution Map
© The IUCN Red List of Threatened Species: Sceloporus jarrovi – published in 2007.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
2
Population
This species is represented by many collection sites. The total adult population size is unknown but
surely exceeds 100,000. Density ranges from a few dozen per hectare to more than 200 per hectare (see
Degenhardt et al. 1996). The extent of occurrence, area of occupancy, and population size are large and
probably stable. It is very common.
Current Population Trend: Stable
Habitat and Ecology (see Appendix for additional information)
This is a montane species, attracted to rocky canyons, cliffs, and hillsides, including areas of oak
woodland, thornscrub, and mixed oak and pine (Stebbins 2003). Typically it occurs on rocky outcrops,
sometimes climbs trees.
Systems: Terrestrial
Threats
No major threats have been identified.
Conservation Actions (see Appendix for additional information)
In view of its wide range, it seems likely that this species is present in some protected areas. No direct
conservation measures are needed for this species as a whole.
Credits
Assessor(s):
Hammerson, G.A., Vazquez Díaz, J. & Quintero Díaz, G.E.
Reviewer(s):
Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating
Team)
© The IUCN Red List of Threatened Species: Sceloporus jarrovi – published in 2007.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
3
Bibliography
Bell, E.L., Smith, H.M. and Chiszar, D. 2003. An annotated list of of the species-group names applied to
the lizard genus Sceloporus. Acta Zoologica Mexicana (n.s.) 90: 103-174.
Degenhardt, W.G., Painter, C.W. and Price, A.H. 1996. Amphibians and Reptiles of New Mexico.
University of New Mexico Press, Albuquerque, New Mexico. Xix + 431 pp.
IUCN. 2007. 2007 IUCN Red List of Threatened Species. Available at: www.iucnredlist.org. (Accessed:
12th September 2007).
Rosen, P.C. and Persons, T.B. 2002. Geographic distribution: Sceloporus jarrovii. Herpetological Review
33: 322-323.
Sites Jr., J.W., Archie, J.W., Cole, C.J. and Flores-Villela, O. 1992. A review of phylogenetic hypotheses for
lizards of the genus Sceloporus (Phrynosomatidae): implications for ecological and evolutionary studies.
Bulletin of the American Museum of Natural History 213: 1-110.
Stebbins, R.C. 2003. A Field Guide to Western Reptiles and Amphibians. Third Edition. Houghton Mifflin
Company, Boston, Massachusetts.
Weins, J.J. and Reeder, T.W. 1997. Phylogeny of the spiny lizards (Sceloporus) based on molecular and
morphological evidence. Herpetological Monographs 11: 1-101.
Wiens, J.J. and Penkrot, T.A. 2002. Delimiting species using DNA and morphological variation and
discordant species limits in spiny lizards (Sceloporus). Systematic Biology 51(1): 69-91.
Wiens, J.J., Reeder, T.W. and Montes de Oca, A.N. 1999. Molecular phylogenetics and evolution of sexual
dichromatism among populations of the Yarrow's Spiny Lizard (Sceloporus jarrov). Evolution 53(6): 18841897.
Citation
Hammerson, G.A., Vazquez Díaz, J. & Quintero Díaz, G.E. 2007. Sceloporus jarrovi. The IUCN Red List of
Threatened Species 2007: e.T64116A12745692.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
Disclaimer
To make use of this information, please check the Terms of Use.
External Resources
For Images and External Links to Additional Information, please see the Red List website.
© The IUCN Red List of Threatened Species: Sceloporus jarrovi – published in 2007.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
4
Appendix
Habitats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Habitat
Season
Suitability
Major
Importance?
1. Forest -> 1.4. Forest - Temperate
-
Suitable
-
1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
-
Suitable
-
0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
-
Suitable
-
Conservation Actions in Place
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Conservation Actions in Place
In-Place Land/Water Protection and Management
Occur in at least one PA: Yes
© The IUCN Red List of Threatened Species: Sceloporus jarrovi – published in 2007.
http://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64116A12745692.en
5
The IUCN Red List Partnership
The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species
Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN
Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation
International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas
A&M University; Wildscreen; and Zoological Society of London.
THE IUCN RED LIST OF THREATENED SPECIES™