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Underwoodisaurus seorsus DOUGHTY & OLIVER, 2011

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Higher TaxaCarphodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
SynonymUnderwoodisaurus seorsus DOUGHTY & OLIVER 2011
Underwoodisaurus seorsus — COGGER 2014: 284
Underwoodisaurus seorsus — CHAPPLE et al. 2019: 118 
DistributionAustralia (Western Australia: Pilbara)

Type locality: Packsaddle Range (22.9144°S, 118.9158°E, elevation 638 m), Pilbara region, Western Australia.  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: WAM R157525, adult female with original tail, collected by P. Cullen and M. Menz on 7 May 2004. Paratypes. WAM R129895 (male), West Angelas, 100 km north-east of Newman (23.1833°S, 118.8142°E, elevation 775 m) on 14 June 1997; WAM R157520 (male), WAM R157522 (female), WAM R157513 (juvenile), Packsaddle Range (22.9144°S, 118.9158°E, elevation 861 m) collected on 7 May 2004; WAM R163638, female, 60 km north of Tom Price (22.1191°S, 117.9183°E, elevation 579 m) collected on 18 November 2008; all from the Pilbara region, Western Australia. 
DiagnosisDiagnosis: A typically-sized (to ~100 mm SVL) Underwoodisaurus with transverse subdigital lamellae, minute anterior loreals compared to larger posterior loreals, labial scales larger than neighboring scales, unreduced phalangeal formula (, and long original tail gradually tapering to tip. Distinguished from U. milii by possessing an elongate snout (NE/IN: 1.74–1.89), relatively long limbs (ArmL/SVL: 0.18–0.20; LegL/SVL: 0.20–0.22) and digits (4FL/SVL: 0.064–0.084; 4TL/SVL: 0.076–0.095), higher density of smaller enlarged tuber- cles scattered across the dorsum but with lower, more acute tubercles with anterior keel more common and conspicuous, relatively deep mental (projecting to level of, or beyond, first secondary infralabial) and often terminating posteriorly in a point (v. rounded), enlarged tubercles on original tails not forming transverse rows. Reddish-brown ground color with relatively plain head without light blotching or patterning, dorsal pattern consisting of sparsely scattered small pale tubercles and a narrow band across the nape. 
EtymologyNamed after Latin for ‘apart’ or ‘separate’ in reference to the large distance between the distributions of U. seorsus sp. nov. and U. milii. Used as a noun in apposition. 
  • Chapple, David G.; Reid Tingley, Nicola J. Mitchell, Stewart L. Macdonald, J. Scott Keogh, Glenn M. Shea, Philip Bowles, Neil A. Cox, John C. Z. Woinarski 2019. The Action Plan for Australian Lizards and Snakes 2017. CSIRO, 663 pp. DOI: 10.1071/9781486309474 - get paper here
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp. - get paper here
  • DOUGHTY, PAUL & PAUL M. OLIVER 2011. A new species of Underwoodisaurus (Squamata: Gekkota: Carphodactylidae) from the Pilbara region of Western Australia. Zootaxa 3002: 20–30 - get paper here
  • Ellis, Ryan J.; Paul Doughty and Aaron M. Bauer 2018. An annotated type catalogue of the geckos and pygopods (Squamata: Gekkota: Carphodactylidae, Diplodactylidae, Gekkonidae, Pygopodidae) in the collection of the Western Australian Museum. Records of the Western Australian Museum 33: 051–094 - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
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