Ctenophorus spinodomus SADLIER, COLGAN, BEATSON & COGGER, 2019
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Ctenophorus spinodomus
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| Higher Taxa | Agamidae (Amphibolurinae), Sauria, Iguania, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Eastern Mallee Dragon |
| Synonym | Ctenophorus spinodomus SADLIER, COLGAN, BEATSON & COGGER 2019: 207 Ctenophorus fordi group 1 — EDWARDS et al. 2015 |
| Distribution | Australia (SW New South Wales, SE South Australia, probably NW Victoria) Type locality: Yathong Nature Reserve (32.5742°S 145.3828°E) NSW, Australia |
| Reproduction | |
| Types | Holotype. AMS R.156615, G. Swan (07 October 1999). Paratypes. AMS R.154827–28, Yathong Nature Reserve (32.5742°S 145.3828°E), NSW, G. Swan (12–14 October 1999); R.156647, R.156711, Yathong National Park (32.5869°S 145.4975°E), NSW, G. Swan (1999); R.156704, Yathong National Park or Yarra Property (32.58°S 145.40°E), NSW, G. Swan (1999); R.157315, Yathong Nature Reserve, 10 km NNW of Shearers Quarters (32.5864°S 145.4972°E), NSW, P. Harlow and G. Swan (07 November 1998); R.145176–77, R.145179, Yathong Nature Reserve (32.72°S 145.53°E), NSW, P. Harlow; R.114208–09, R.114211, R.114213–15, Mungo National Park, 5.0 km N of SE corner (33.77°S 143.22°E), NSW, R. Sadlier and G. Shea (02 November 1984); R.114456–57, Mungo National Park, 5.0 km N of SE corner (33.77°S 143.22°E), NSW, R. Sadlier and G. Shea (12 November 1984); R.114347–48, R.114349, Top Hut Homestead, 6.9 km S on Old Arumpo Rd. (33.73°S 142.92°E), NSW, R. Sadlier and G. Shea (17 November 1984); R.115216, Top Hut Station, 8 km NE Roys Tank (33.68°S 142.98°E), NSW, C. Tiedermann (25 November 1984); R.153214–16, Warrakoo Station (33.9858°S 141.1180°E), NSW, M. LeBreton (16 October 1998); R.7755–76, Murray Bridge (35.12°S 139.27°E), SA; R.20989, Renmark (34.17°S 140.75°E), SA; R.145481–82 Brookfield Conservation Park (34.32°S 139.50°E), SA; R.104842–43, Renmark (34.17°S 140.75°E), SA. |
| Diagnosis | Diagnosis: Ctenophorus spinodomus sp. nov. is diagnosed from all other species in the genus, except for the taxa currently contained within C. maculatus and C. fordi, in having a near continuous row of femoral pores either side (15–22) in adult males arranged in a row that arches forward to an apex on the midline, and a dark chest patch (although obscure) between the forelimbs in adult males. Adult female C. spinodomus sp. nov. can be distinguished from other regionally sympatric (C. pictus) or parapatric (C. nuchalis) species of Ctenophorus by the presence (vs absence) of a fine, typically uninterrupted pale dorsolateral stripe down the body from the neck to just past the hindlimbs. Adult male C. spinodomus sp. nov. are diagnosed from all named subspecies of Ctenophorus maculatus in having fewer femoral pores in total (maximum 41 vs range of 40–57 encompassed by the maculatus subspecies—Storr, 1965), and in the dark markings on the throat being present as a series of dark spots and blotches either side of the midline of varying intensity and degree of coalescence vs a pattern of well-defined narrow to broad dark bars either side. The following features of colouration and scalation in combination distinguish Ctenophorus spinodomus sp. nov. from taxa assignable to the other genetic lineages under C. fordi (see Tables 2 and 3): tail length c. 2.1–2.4 times the body length in males and c. 1.95–2.15 times in females: hindlimb length c. 82–93% SVL in males, c. 74–93% in females; upper labial scales 10–13; subdigital lamellae scales 25–31; femoral pore scales in males 16–22 either side; dark markings of the throat of adult males typically obscure and present as scattered spots and blotches, occasionally aligned either side of the midline but not coalescing to form elongate blotches; chest of adult males with a typically poorly-defined black “T” shaped patch. (Sadlier et al. 2019) |
| Comment | Distribution: for a maps see Sadlier et al. 2019: Figs 2, 3, EDWARDS & HUTCHINSON 2023: 177 (Fig. 1). Synonymy: Populations of this species were previously considered to be C. fordi. |
| Etymology | The species epithet is derived from a combination of the Latin spinosus for spiny and domus for home, in reference to the species’ reliance on Triodia grass hummocks. |
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