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Ctenotus ariadnae STORR, 1969

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Higher TaxaScincidae, Sphenomorphinae (Sphenomorphini), Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Ariadna's Ctenotus 
SynonymCtenotus ariadnae STORR 1969: 104
Ctenotus ariadnae — COGGER 1983: 143
Ctenotus ariadnae — COGGER 2000: 414
Ctenotus ariadnae — WILSON & SWAN 2010 
DistributionAustralia (Western Australia)

Type locality: 24 mi ENE of Laverton, in 28° 31’ S, 122° 45’ E, W. A.  
TypesHolotype: WAM R30006 
DiagnosisDiagnosis: “A moderately large member of the taeniolatus group closely related to dux and quattuordecimlineatus but distinguishable from both by its shorter appendages, paler coloration and almost complete lack of lateral pattern between ear and foreleg (especially failure of white midlateral and ventrolateral stripes to extend anteriorly beyond arm).” (Storr 1969)

Description. “SVL (mm) 29-64. Length of appendages (% SVL) tail 162-186, foreleg 21-30, hindleg 34-47. Nasals in contact. Prefrontals in contact. Supraoculars 4, first 3 in contact with frontal. Supraciliaries 6 or 7. Palpebrals 9-12. Second loreal 1.0-2.0 times as wide as high. Upper labials 8. Ear lobules 4-7, obtuse in juveniles. long and acute in adults. Nuchals 1-4. Midbody scale-rows 29-34. Lamellae under fourth toe 20-24, each with a narrow brown callus or obtuse keel.” (Storr 1969)

Coloration: “Head olive grey or brown. Tail and limbs pale reddish brown, Back and sides dark brown (adults) or blackish (juveniles) with about 18 pale lines or stripes well-defined dorsally but increasingly ill-defined on sides. Pale brown paravertebral line from nape to middle of tail. Pale brown dorsal line from nape to base of tail. Whitish dorsolateral line from above temples or ear to distal part of tail (on which it is wider and suffused with brown). or 4 pale-brown upper lateral lines, upper extending anteriorly almost to level of ear, lower not reaching forward to or past level of arm. White midlateral stripe more or less narrow and indistinct, not reaching for ward to axilla. Pale ventrolateral stripe indistinct or absent, not reaching forward to axilla. Underneath whitish except for greyish lateral margins of ventrals (and sometimes also of gulars)”. (Storr 1969) 
CommentAbundance: not uncommon, with more than 200 specimens collected (Pianka 2011)

Limb morphology: 5 digits, 5 toes (Singhal et al. 2018, Cogger 2014) 
EtymologyNamed after Mrs Ariadna Neumann (Librarian, Western Australian Museum). 
  • Anonymous 1969. Type Specimens in the Western Australian Museum (Part 10). Annual Report, Western Australian Museum, 1968-69, Perth, pp. 58-60
  • Aplin KP & Adams M 1998. Morphological and genetic discrimination of new species and subspecies of gekkonid and scincid lizards (Squamata: Lacertilia) from the Carnarvon Basin of Western Australia. J. Royal Soc. Western Australia 81: 201-223 - 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
  • 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
  • Gynther, Ian; Harry Hines, Alex Kutt, Eric Vanderduys and Megan Absolon 2009. A verteAbrate faunavsurvey of Cravetns Peak Rbeserver, farawestetrn Qeueenslanfd auna survey of Cravens Peak Reserve, far western Queensland. Cravens Peak Scientific Study Report - get paper here
  • Pianka, E. R. 1969. Sympatry of desert lizards (Ctenotus) in Western Australia. Ecology 50: 1012-1030 - 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 1969. The genus Ctenotus (Lacertilia: Scincidae) in the Eastern Division of Western Australia. J. Royal Soc. Western Australia 51: 97-109 - get paper here
  • 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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