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Lerista walkeri (BOULENGER, 1891)

IUCN Red List - Lerista walkeri - Least Concern, LC

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Higher TaxaScincidae, Sphenomorphinae (Sphenomorphini), Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Coastal Kimberley Slider 
SynonymLygosoma walkeri BOULENGER 1891: 405
Rhodona walkeri — SMITH 1937: 230
Lygosoma (Rhodona) walkeri — GLAUERT 1960
Lerista walkeri — GREER 1967
Lerista walkeri — STORR 1976: 249
Lerista walkeri — COGGER 1983: 177
Lerista walkeri — COGGER 2000: 536
Marrunisauria walkeri — WELLS 2012: 228
Lerista walkeri — WILSON & SWAN 2010 
DistributionAustralia (Western Australia)

Type locality: Roebuck Bay and Condillac Is., W. A.  
Reproductionoviparous 
TypesSyntypes: BMNH 1946.8.15.59, BMNH 1946.8.15.62 
DiagnosisDiagnosis: Moderately small Lerista with digits 2 + 2 (locally 2 + 3), eyelid movable, frontonasals fused or paired, and dorsal pattern of dark dots. Distinguishable from L. borealis by small last supraciliary (much smaller than third and fourth), long suture between nasals, darker and more heavily spotted coloration, greater size, shorter limbs and fewer subdigital lamellae. (Storr 1976)

Description (based on Prince Regent River series): Snout-vent length (mm): 41-63 (55.7). Length of appendages etc. (% SVL): foreleg 5-8 (5.8); hindleg 10-15 (11.6); tail 75-110 (90.8); snout to foreleg 22-28 (24.9). Digits 2 + 2.
Nasals forming a long median suture. Prefrontals widely separated. Frontoparietals fused (7 specimens) or paired with long to moderately long median suture (6 specimens); shorter than interparietal. Nuchals 0-4 (2.2). Supraoculars normally 3, with first two contacting frontal (on one side of R46726 first and second supraoculars fused to each other and to second supraciliary). Supraciliaries normally 5; third and fourth largest, second and fifth smallest. Upper secondary temporal much the largest; lower secondary smallest. Midbody scale rows 22. Lamellae under longer toe 6-10 (8.2).
Coloration: upper surface dark greyish brown with a small obscure blackish brown spot in centre of each dorsal scale; spots aligning longitudinally and becoming larger and darker distally and extending to flanks and under tail. Ventrals whitish, fuzzily edged with greyish brown. Under digits grey. (Storr 1976) 
CommentLimb morphology: 2 digits, 2 toes 
EtymologyNamed after James John Walker (1851-1939) who served in the Royal Navy and was an amateur natural historian and entomologist. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Boulenger, G. A. 1891. Description of a new scincoid lizard from North-western Australia. Ann. Mag. nat. Hist. (6) 8: 405 - 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
  • Glauert, L. 1960. Herpetological miscellanea. XII. The family Scincidae in Western Australia. Pt. 2. The genus Lygosoma. Western Australian Naturalist 7 (4): 81-99 - get paper here
  • Greer, Allen E. 1967. A new generic arrangement for some Australian scincid lizards. Breviora (267): 1-19 - get paper here
  • Skinner, Adam; Michael S Y Lee and Mark N Hutchinson 2008. Rapid and repeated limb loss in a clade of scincid lizards. [Lerista]. BMC Evolutionary Biology 8:310 - get paper here
  • Smith, M.A. 1937. A review of the genus Lygosoma (Scincidae: Reptilia) and its allies. Records of the Indian Museum 39 (3): 213-234
  • Storr, G. M. 1971. The genus Lerista (Lacertilia: Scincidae) in Western Australia. J R. Soc. West. Aust. 54: 59-75
  • Storr, G. M. 1976. Revisionary notes on the Lerista (Lacertilia: Scincidae) of Western Australia. Rec. West. Aust. Mus. 4: 241-256 - 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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