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Anolis orcesi (LAZELL, 1969)

IUCN Red List - Anolis orcesi - Near Threatened, NT
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Higher TaxaAnolidae, Iguania, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Orces' Andes Anole 
SynonymPhenacosaurus orcesi LAZELL 1969: 14
Phenacosaurus orcesi — WILLIAMS & MITTERMEIER 1991
Anolis orcesi — POE 1998
Phenacosaurus orcesi — TORRES-CARVAJAL 2001
Dactyloa orcesi — NICHOLSON et al. 2012
Dactyloa orcesi — NICHOLSON et al. 2018 
DistributionEcuador (Napo)

Type locality: Ecuador, Napo, Mt. Sumaco  
Reproductionoviparous 
TypesHolotype: MCZ 38937; paraype: USNM 16533 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data. These details, e.g. detailed descriptions are available for collaborators and contributors. Please contact us if you need any of this material. 
CommentPopulations of this species have been redescribed as Anolis williamsmittermeierorum POE & YAÑEZ-MIRANDA 2007. Reports from Peru (WILLIAMS & MITTERMEIER 1991) may be based on the latter species.

Distribution: Probably in Colombia although there are no published records [Castro,F. (pers. comm.)]

Species groups: Dactyloa heteroderma species group (fide NICHOLSON et al. 2012). 
EtymologyNamed after Professor Gustavo Orces (1902-1999), a zoologist and herpetologist who worked at the Polytechnic, Quito and who had a large snake collection that he made available to other researchers (now at the Fundación Herpetológica Gustavo Orces at Museo Ecuatoriano de Ciencias Naturales, Quito. 
References
  • Arteaga, A.; Bustamante, L.; Vieira, J. 2024. Reptiles of Ecuador. Khamai Foundation & Tropical Herping, 1073 pp. - get paper here
  • Ayala-Varela, F., Venegas, P.J., García-Ayachi, L.A. & Poe, S. 2026. Mythic lizard rediscovered: redescription of Anolis laevis Cope 1876 (Squamata: Anolidae) from recent collections in Peru. Zootaxa 5752 (4): 516–530 - 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
  • Lazell,J.D., Jr. 1969. The genus Phenacosaurus (Sauria, Iguanidae). Breviora (325): 1-24 - get paper here
  • NICHOLSON, KIRSTEN E.; BRIAN I. CROTHER, CRAIG GUYER & JAY M. SAVAGE 2012. It is time for a new classification of anoles (Squamata: Dactyloidae). Zootaxa 3477: 1–108 - get paper here
  • NICHOLSON, KIRSTEN E.; BRIAN I. CROTHER, CRAIG GUYER & JAY M. SAVAGE 2018. Translating a clade based classification into one that is valid under the international code of zoological nomenclature: the case of the lizards of the family Dactyloidae (Order Squamata). Zootaxa 4461 (4): 573–586 - get paper here
  • Poe S, Anderson CG. 2019. The existence and evolution of morphotypes in Anolis lizards: coexistence patterns, not adaptive radiations, distinguish mainland and island faunas. PeerJ 6: e6040 - get paper here
  • Poe, S. 2013. 1986 Redux: New genera of anoles (Squamata: Dactyloidae) are unwarranted. Zootaxa 3626 (2): 295–299 - get paper here
  • Poe, Steven 1998. Skull characters and the cladistic relationships of the Hispaniolan dwarf twig Anolis. Herpetological Monographs 12: 192-236 - get paper here
  • Poe, Steven 2025. A Guide to the Anolis Lizards (Anoles) of Mainland Central and South America. Princeton University Press, 432 pp. - get paper here
  • Reyes-Puig, C., Brito-Zapata, D., Guayasamin, J.M. et al. 2025. Diversity of amphibians and squamate reptiles in the upper Napo River basin, Ecuador. COMMUNITY ECOLOGY (2025) - get paper here
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - get paper here
  • Torres-Carvajal, O. 2001. Lizards of Ecuador: Checklist, Distribution, and Systematic References. Smithsonian Herp. Inf. Serv. (131): 1-35 - get paper here
  • Williams, Ernest E. & Mittermeier, Russell A. 1991. A peruvian phenacosaur (Squamata: Iguania). Breviora (492): 1-16 - get paper here
 
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