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Diporiphora magna STORR, 1974

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Higher TaxaAgamidae (Amphibolurinae), Sauria, Iguania, Squamata (lizards)
Common NamesE: Yellow-sided Two-lined Dragon 
SynonymDiporiphora magna STORR 1974
Diporiphora magna — COGGER 1983
Diporiphora magna — COGGER 2000: 332
Diporiphora magna — SMITH et al. 2011
Diporiphora magna — MELVILLE et al. 2019: 43
Diporiphora magna — CHAPPLE et al. 2019: 78 
DistributionAustralia (Northern Territory, Queensland, Western Australia)

Type locality: Old Lissadell, in 16° 30’ S, 128° 41’ E (now submerged by Lake Argyle), W. A.  
TypesHolotype: WAM R42786 
DiagnosisDiagnosis. Body size moderately large (to 77 mm SVL) with very long tail (to 3 × SVL). Gular fold absent, post-auricular and scapular folds strong. Granular scales in axilla, extending over arm but not extending onto sides of neck. Homogeneous dorsal scales between pale dorsolateral lines that usually lack raised scales in outer row, providing little demarcation between dorsal and lateral scales. Pre-cloacal pores 4; femoral pores 0 (Melville et al. 2019: 43).

Comparison to other species. The distribution of D. magna overlaps with numerous other Diporiphora species across the tropical savannahs of northern Australia. In the Kimberley region, D. magna differs from D. margaretae in having a smaller body size (to 77 vs. 55 mm SVL), stronger post- auricular and scapular folds, a longer tail and flanks lacking speckled appearance (scattered white scales on a dark background). In the northern NT, D. magna differs from D. bilineata in having a post-auricular fold and homogenoous dorsal scales, lacking rows of enlarged vertebral scales and lacking dark flanks with scattered white scales. In the southern part of its range, D. magna can be distinguished from D. lalliae in lacking a gular fold, a longer tail in proportion to body and granular scales in axilla. Across its range, D. magna can be distinguished from D. albilabris, D. bennettii, D. sobria and D. perplexa sp. nov. in lacking a gular fold, lacking femoral pores and having single canines on either side of the upper jaw (Melville et al. 2019: 45). 
CommentDistribution: for a map see Melville et al. 2019: 41 (Fig. 14). Specimens of D. margaretae were formerly assigned to D. magna, meaning now that D. magna does not occur in the north-west Kimberley region. 
  • 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
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Ellis, Ryan J. 2019. An annotated type catalogue of the dragon lizards (Reptilia: Squamata: Agamidae) in the collection of the Western Australian Museum. Records of the Western Australian Museum 34: 115–132 - get paper here
  • Melville, J., Smith Date, K.L., Horner, P., and Doughty, P. 2019. Taxonomic revision of dragon lizards in the genus Diporiphora (Reptilia: Agamidae) from the Australian monsoonal tropics. Memoirs of Museum Victoria 78: 23–55 - get paper here
  • Smith, Katie L.; Luke J. Harmon, Luke P. Shoo, and Jane Melville 2011. EVIDENCE OF CONSTRAINED PHENOTYPIC EVOLUTION IN A CRYPTIC SPECIES COMPLEX OF AGAMID LIZARDS. Evolution 65-4: 976–992 - get paper here
  • Storr, G. M. 1974. Agamid lizards of the genera Caimanops, Physignathus and Diporiphora in Western Australia and Northern Territory. Rec. West. Aust. Mus. 3: 121-146 - 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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