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Tracheloptychus madagascariensis PETERS, 1854

IUCN Red List - Tracheloptychus madagascariensis - Least Concern, LC
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Higher TaxaGerrhosauridae (Zonosaurinae), Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Madagascar Keeled Cordylid
G: Madagaskar-Kiel-Schildechse 
SynonymTracheloptychus madagascariensis PETERS 1854: 617
Tracheloptychus madagascariensis — ANGEL 1942: 102
Tracheloptychus madagascariensis — BRYGOO 1985: 6
Tracheloptychus madagascariensis — GLAW & VENCES 1994: 300
Tracheloptichus [sic] madagascariensis — VAN BEEST 2004
Tracheloptychus madagascariensis — RECKNAGEL et al. 2013 
DistributionSE Madagascar

Type locality: Madagascar (St. Augustins-Bay)  
Reproductionoviparous 
TypesLectotype: ZMB 6122, designated by BRYGOO 1985. 
DiagnosisDiagnosis (genus): The two Malagasy species of Tracheloptychus possess keeled dorsal scales (in contrast to Zonosaurus which have smooth scales), and keeled scales underneath digits (rounded in Zonosaurus) (Recknagel et al. 2013).


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CommentType species: Tracheloptychus madagascariensis PETERS 1854: 617 is the type species of the genus Tracheloptychus PETERS 1854.

Phylogenetics: While Tracheloptychus is monophyletic in recent studies (Recknagel et al. 2013) the genus may also be included as a synonym in Zonosaurus.

Reference images: see Uetz et al. 2024 for high-resolution reference images for this species. 
EtymologyNamed after the type locality.

The genus was named after the Greek trachelos (τραχηλος) = neck, and Greek ptychos, ptyche (πτυχός, from πτύξ), fold, leaf, layer, plate. 
References
  • Angel, F. 1942. Les Lézards de Madagascar. Mem. Acad. Malagache, Tananarive XXXVI: 193 pp.
  • Barbour, Thomas 1918. Vertebrata from Madagascar. 2. Amphibia and Reptilia. Bull. Mus. Comp. Zool. Harvard 61 (14): 479-489. - get paper here
  • Barts, M. 2008. Schildechsen: Gattungen und Arten im Überblick. Reptilia (Münster) 13 (69): 18-25 - get paper here
  • Brygoo, E.R. 1985. Les Gerrhosaurinae de Madagascar, Sauria (Cordylidae). Mém. Mus. Natl. Hist. Nat. (nouv. sér., sér. A, Zool.) 134: 1-65 - get paper here
  • D'Cruze, Neil; Annette Olsonn, David Henson, Sunil Kumar, and David Emmett. 2009. The Amphibians and Reptiles of the Lower Onilahy River Valley, a Temporary Protected Area in Southwest Madagascar. Herp. Cons. Biol. 4: 62-79 - get paper here
  • Glaw ,F. & Vences, M. 1994. A Fieldguide to the Amphibians and Reptiles of Madagascar. Vences & Glaw Verlag, Köln (ISBN 3-929449-01-3)
  • Meier, H. 1988. Zur Ökologie, Ethologie und Taxonomie einiger Schildechsen der Gattungen Tracheloptychus und Zonosaurus auf Madagaskar, Teil 1. Herpetofauna 10 (57): 22-26 - get paper here
  • Nopper, J., Lauströer, B., Rödel, M.-O. and Ganzhorn, J. U. 2016. A structurally enriched agricultural landscape maintains high reptile diversity in sub-arid south-western Madagascar. J Appl Ecol., doi:10.1111/1365-2664.12752 - get paper here
  • Peters,W.C.H. 1854. Diagnosen neuer Batrachier, welche zusammen mit der früher (24. Juli und 17. August) gegebenen Übersicht der Schlangen und Eidechsen mitgetheilt werden. Ber. Bekanntmach. Geeignet. Verhandl. Königl.-Preuss. Akad. Wiss. Berlin 1854: 614-628
  • Raselimanana, Achille P.; Brice Noonan, K. Praveen Karanth, Jacques Gauthier, Anne D. Yoder 2009. Phylogeny and evolution of Malagasy plated lizards. Molecular Phylogenetics and Evolution 50 (2): 336-344 - get paper here
  • Recknagel, Hans; Kathryn R. Elmer, Brice P. Noonan, Achille P. Raselimanana, Axel Meyer, Miguel Vences 2013. Multi-gene phylogeny of Madagascar’s plated lizards, Zonosaurus and Tracheloptychus (Squamata: Gerrhosauridae). Molecular Phylogenetics and Evolution - get paper here
  • Uetz, P.H.; Patel, M.; Gbadamosi, Z.; Nguyen, A.; Shoope, S. 2024. A Reference Database of Reptile Images. Taxonomy 4: 723–732 - get paper here
  • Van Beest, Piet 2004. Herpetologische waarnemingen op Madagascar - deel 2: Fianarantsoa en verder naar het zuiden. Lacerta 62 (3): 92-103 - get paper here
 
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