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Phrynosoma ditmarsi STEJNEGER, 1906

IUCN Red List - Phrynosoma ditmarsi - Data Deficient, DD

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Higher TaxaPhrynosomatidae, Phrynosomatinae, Phrynosomatini; Iguania, Sauria, Squamata (lizards)
Common NamesE: Rock Horned Lizard
S: Camaleón de Roca 
SynonymPhrynosoma ditmarsi STEJNEGER 1906
Phrynosoma ditmarsi — SMITH & TAYLOR 1950: 104
Phrynosoma ditmarsi — LINER 1994
Phrynosoma ditmarsi — PIANKA & VITT 2003: 161 
DistributionMexico (Sonora)

Type locality: State of Sonora, not far from the boundary of Arizona.  
TypesHolotype: USNM 36022 
CommentHabitat: montane

Group: Belongs to the Tapaja clade fide LEACHE & MCGUIRE 2006.

Diet: With 11% of its diet being ants this species seems to be the least dependent and specialized on ants (Fabian 2014). 
EtymologyNamed after Dr. Raymond Lee Ditmars (1876-1942), Curator of Reptiles at the Bronx Zoo, New York (1899-). Ditmars also worked in the Department of Entomology at the American Museum of Natural History (1893-1897) and as a reporter for the New York Times (1898). 
  • Aguilar-Morales, Cecilia and Thomas R. Van Devender 2018. Horned Lizards (Phrynosoma) of Sonora, Mexico: Distribution and Ecology. Sonoran Herpetologist 31 (3): 40-50 - get paper here
  • Baur, B. 1986. Die Felsen-Krötenechse. Herpetofauna 8 (40): 27 - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Burkhardt, Timothy R. and Scott Trageser. 2015. Geographic Distribution: Phrynosoma ditmarsi (rock horned lizard). Herpetological Review 46 (1): 60 - get paper here
  • Enderson, Erik F.; Thomas R. Van Devender, Robert L. Bezy 2014. Amphibians and reptiles of Yécora, Sonora and the Madrean Tropical Zone of the Sierra Madre Occidental in northwestern Mexico. Check List 10 (4): 913-926 - get paper here
  • Fabian, B. F 2014. Überlegungen zur Ernährung von Krötenechsen. Reptilia (Münster) 19 (107): 24-29
  • Hodges W L. 1995. Phrynosoma ditmarsi. Catalogue of American Amphibians and Reptiles (614): 1-3. - get paper here
  • Jones, L.L. & Lovich, R.E. 2009. Lizards of the American Southwest. A photographic field guide. Rio Nuevo Publishers, Tucson, AZ, 568 pp. [review in Reptilia 86: 84] - get paper here
  • Leaché, Adam D. and Jimmy A. McGuire 2006. Phylogenetic relationships of horned lizards (Phrynosoma ) based on nuclear and mitochondrial data: Evidence for a misleading mitochondrial gene tree. Molecular Phylogenetics and Evolution 39 (3): 628-644 - get paper here
  • Lemos-Espinal JA, Smith GR, Rorabaugh JC 2019. A conservation checklist of the amphibians and reptiles of Sonora, Mexico, with updated species lists. ZooKeys 829: 131-160 - get paper here
  • Lowe, Charles H., Jr;Robinson, Michael D.;Roth, Vincent D. 1971. A population of Phrynosoma ditmarsi from Sonora, Mexico. Journal of the Arizona Academy of Science 6 (4): 275-277 - get paper here
  • Meyers, J.J.; Herrel, A. & Nishikawa, K. 2006. Morphological correlates of ant eating in horned lizards (Phrynosoma). Biological Journal of the Linnean Society 89: 13–24 - get paper here
  • Molina-Padilla, G; Van Devender, T R & Salazar-Martínez, J A; 2019. Geographic Distribution: Phrynosoma ditmarsi (Rock Horned Lizard) Mexico: Sonora: Municipality of Bacoachi. Herpetological Review 50 (3): 527 - get paper here
  • Pianka, E.R. & Vitt, L.J. 2003. Lizards - Windows to the Evolution of Diversity. University of California Press, Berkeley, 347 pp. [review in Copeia 2004: 955] - get paper here
  • Reeder,T.W. & Montanucci,R.R. 2001. Phylogenetic analysis of the horned lizards (Phrynomomatidae: Phrynosoma): evidence from mitochondrial DNA and morphology. Copeia 2001 (2): 309-323 - get paper here
  • Roth, V.D. 1997. Ditmars' Horned Lizard (Phrynosoma ditmarsi) or the case of the lost lizard. Sonoran Herpetologist 10 (1):2-6. - get paper here
  • Sherbrooke, Wade C. 2003. Introduction to Horned Lizards of North America. University of California Press, Berkeley, 178 pp. - get paper here
  • Sherbrooke, Wade C.;Martin, Brent E.;Lowe, Charles H. 1998. Geographic Distribution. Phrynosoma ditmarsi. Herpetological Review 29 (2): 110-111 - get paper here
  • Stejneger, Leonhard 1906. A new lizard of the genus Phrynosoma, from Mexico. Proc. US Natl. Mus. 29 (1437): 565-567 - get paper here
  • Turner, D. S., T. R. Van Devender, H. Silva-Kurumiya, N. León Del Castillo, C. Hedgcock, C. Roll, M. Wilson, and F. I. Ochoa-Gutierrez. 2017. Distribution of Phrynosoma ditmarsi Stejneger, 1906, with notes on habitat and morphology. 2017. Mesoamerican Herpetology 4(4): 979–985 - get paper here
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