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Ctenotus lancelini FORD, 1969

IUCN Red List - Ctenotus lancelini - Vulnerable, VU
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Higher TaxaScincidae, Sphenomorphinae (Sphenomorphini), Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Lancelin South-west Ctenotus 
SynonymCtenotus labillardieri lancelini FORD 1969
Ctenotus lancelini — COGGER 1983: 148
Ctenotus lancelini — COGGER 2000: 432
Ctenotus lancelini — WILSON & SWAN 2010 
DistributionAustralia (Western Australia(Lancelin Island),)

Type locality: Lancelin Is., W. A.  
Reproductionoviparous 
TypesHolotype: WAM R18872 
DiagnosisDiagnosis: A large pale member of the labillardieri group with yellow legs streaked with blackish brown (Storr 1974: 90).

Description. Snout-vent length (mm): 68-80 (75.7). Length of appendages (% SVL): tail 189-194 (192), foreleg 20-23 (20.8), hindleg 32-38 (33.4). Nasals separated (usually narrowly). Pre frontals narrowly separated. Supraoculars 4, first 2 (3 in one specimen) in contact with frontal. Supraciliaries 7 or 8 (7.4). Palpebrals 11-13 (11.4). Second loreal 1.4-1.8 (1.62) times as wide as high. Upper labials 8. Ear lobules 3 or 4 (3.4), subacute or obtuse, second the largest. Nuchals 3 or 4 (3.4). Midbody scale rows 24. Lamellae under fourth toe 22-24 (23.0), each bearing a wide callus. Dorsally pale brown, irregularly marked with dark brown (markings tending to orientate longi tudinally). Poorly defined blackish brown laterodorsal stripe from temples to base of tail, enclosing an irregular series of pale spots. White dorsolateral line from orbit to base of tail. Blackish upper lateral zone enclosing an irregu lar series of whitish spots and short dashes. White midlateral stripe from ear aperature to base of tail. Dark brown lower lateral zone variably marked with white, including in one specimen a ventrolateral stripe (Storr 1974: 90). 
CommentLimb morphology: 5 digits, 5 toes (Singhal et al. 2018, Cogger 2014)

Conservation: this is one of the most-threatened reptile species in Australia (Geyle et al. 2021). 
EtymologyNamed after the type locality. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp. - get paper here
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Couper, P., Covacevich, J., Amey, A. & Baker, A. 2006. The genera of skinks (Family Scincidae) of Australia and its island territories: diversity, distribution and identification. in: Merrick, J.R., Archer, M., Hickey, G.M. & Lee, M.S.Y. (eds.). Evolution and Zoogeography of Australasian Vertebrates. Australian Scientific Publishing, Sydney, pp. 367-384
  • Ford, J. 1969. Distribution and variation of the skink Ctenotus labillardieri (Gray) of southwestern Australia. J R. Soc. West. Aust. 51: 68-75
  • Geyle, H. M., Tingley, R., Amy, A., Cogger, H., Couper, P., Cowan, M., Craig, M., Doughty, P., Driscoll, D., Ellis, R., Emery, J-P., Fenner, A., Gardner, M., Garnett, S., Gillespie, G., Greenless, M., Hoskin, C., Keogh, S., Lloyd, R., ... Chapple, D. 2020. Reptiles on the brink: Identifying the Australian terrestrial snake and lizard species most at risk of extinction. Pacific Conservation Biology - get paper here
  • KAY, GEOFFREY M. & J. SCOTT KEOGH 2012. Molecular phylogeny and morphological revision of the Ctenotus labillardieri (Reptilia: Squamata: Scincidae) species group and a new species of immediate conservation concern in the southwestern Australian biodiversity hotspot. Zootaxa 3390: 1–18 - get paper here
  • Singhal, Sonal; Huateng Huang, Maggie R. Grundler, María R. Marchán-Rivadeneira, Iris Holmes, Pascal O. Title, Stephen C. Donnellan, and Daniel L. Rabosky 2018. Does Population Structure Predict the Rate of Speciation? A Comparative Test across Australia’s Most Diverse Vertebrate Radiation. The American Naturalist - get paper here
  • Storr, G. M. 1974. The genus Ctenotus (Lacertilia: Scincidae) in the South-west and Eucla Divisions of Western Australia. J R. Soc. West. Aust. 56: 86-93 [1973]
  • Storr, G. M., Smith, L. A. & Johnstone, R. E. 1981. Lizards of Western Australia. I. Skinks. Perth: University of Western Australia Press and Western Australian Museum, 200 pp.
  • Storr, G. M.; L. A. Smith, and R. E. Johnstone 1999. Lizards of Western Australia. I. Skinks. Revised Edition. Western Australian Museum
  • Wilson, S. & Swan, G. 2010. A complete guide to reptiles of Australia, 3rd ed. Chatswood: New Holland, 558 pp.
 
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