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Gehyra montium STORR, 1982

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos) 
Subspecies 
Common NamesCentralian Dtella 
SynonymGehyra punctata — MITCHELL 1965 (partim)
Gehyra montium STORR 1982
Dactyloperus montium — WELLS & WELLINGTON 1984
Gehyra montium — KLUGE 1993
Gehyra montium — COGGER 2000: 239
Gehyra montium — WILSON & SWAN 2010 
DistributionAustralia (C/S Northern Territory, NW South Australia, E Western Australia)

Type locality: Mt Lindsay, South Australia, in 27°02'S, 129°53'E.  
Reproductionoviparous 
TypesHolotype: WAM R31732 
DiagnosisDiagnosis: A small rock-inhabiting Gehyra, most like G. variegata but slightly smaller (SVL up to 50, v. up to 54 mm) and with ground colour reddish (rather than brownish), pale dorsal spots usually detached from dark markings (in variegata the white spots or short white transverse bars are contiguous to posterior edge of dark transverse bars and are partly enclosed by these bars when they curve concavely backwards), and top of rostral less acutely gable-shaped. Further distinguishable from G. pilbara by first upper labial not higher than second, and from G. purpurascens by larger postnasal and presence of pale spots on head and back.

Diagnosis. Distinguished from other Australian Gehyra by a combination of modally seven divided scansors under the expanded portion of the fourth toe, small to moderate size, generally two pairs of enlarged chin shields, second infralabial notched, a dorsal colour pattern combining pinkish brown to rufous colouring (in life) usually patterned by small pale spots interspersed in a continuous network of irregular, dark lines, and a karyotype of 2n=42a (illustrated in King 1979, fig. 9; Moritz 1986, fig. 3). Distinguished from some other rock dwelling species (G. minuta, G. moritzi sp. nov. and G. pulingka sp. nov.) by more reticulate dorsal pattern and often weak contrast of pale spots. Most similar to G. variegata and G. versicolor sp. nov. but somewhat smaller and usually more rufous in colouring with dorsal white markings consisting of small poorly contrasting dots (readily lost in preservative) that are not consistently coordinated with the dark markings.
This diagnosis applies to populations of Gehyra genetically assignable to the “montium clade” of Sistrom et al. (2013). [HUTCHINSON et al. 2014] 
CommentGroup: Member of the Gehyra variegata-punctata species complex.

Karyotype: 2n=42a

Distribution: see map in Kealley et al. 2018: 4 (Fig. 1). 
Etymology 
References
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp.
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • 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
  • HUTCHINSON, MARK N.; MARK J. SISTROM, STEPHEN C. DONNELLAN <br />& RHONDA G. HUTCHINSON 2014. Taxonomic revision of the Australian arid zone lizards Gehyra variegata and G. montium (Squamata, Gekkonidae) with description of three new species. Zootaxa 3814 (2): 221–241 - get paper here
  • Kealley, Luke; Paul Doughty, Mitzy Pepper, J. Scott Keogh, Mia Hillyer and Joel Huey 2018. Conspicuously concealed: revision of the arid clade of the Gehyra variegata (Gekkonidae) group in Western Australia using an integrative molecular and morphological approach, with the description of five cryptic species. PeerJ 6:e5334; DOI 10.7717/peerj.5334 - get paper here
  • Sistrom, Mark; Steve C. Donnellan, Mark N. Hutchinson 2013. Delimiting species in recent radiations with low levels of morphological divergence: A case study in Australian Gehyra geckos. Molecular Phylogenetics and Evolution 68 (1): 135–143 - get paper here
  • Storr, G. M. 1982. Two new Gehyra (Lacertilia: Gekkonidae) from Australia. Rec. West. Austr. Mus. 10: 53—59. - get paper here
  • Wilson, S. & Swan, G. 2010. A complete guide to reptiles of Australia, 3rd ed. Chatswood: New Holland, 558 pp.
 
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