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Ctenophorus decresii (DUMÉRIL & BIBRON, 1837)

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Higher TaxaAgamidae (Amphibolurinae), Sauria, Iguania, Squamata (lizards) 
Subspecies 
Common NamesTawny Crevice-dragon, Tawny Dragon 
SynonymGrammatophora decresii DUMÉRIL & BIBRON 1837: 472
Agama decresiensis FITZINGER 1843: 83 (nom. subst. pro G. decresii)
Ctenophorus decresii — FITZINGER 1843: 83
Amphibolurus decresii — BOULENGER 1885: 385
Amphibolurus modestus AHL 1926: 187 (fide COGGER 1983)
Amphibolurus decresii — COGGER 1983: 110
Amphibolurus decresii — GIBBONS & LILLYWHITE 1981
Ctenophorus decresii — MANTHEY & SCHUSTER 1999: 47
Ctenophorus decresii — COGGER 2000: 312
Ctenophorus decresii — WILSON & SWAN 2010 
DistributionAustralia (New South Wales, South Australia)

Type locality: Kangaroo Island, South Australia. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproductionoviparous 
TypesHolotype: MNHN 6545 
CommentNot listed in COGGER 1983, but he lists Amphibolurus decresiensis (in error ?). Status of the latter name unclear.

Type species: Grammatophora decresii DUMÉRIL & BIBRON 1837 is the type species of the genus Ctenophorus FITZINGER 1843. Grammatophora DUMERIL & BIBRON 1837:468 is a nomen substitutum pro Gemmatophora KAUP 1827; non Grammatophora STEPHENS, a nomen nudum and a genus of Lepidoptera).

Diagnosis (genus): Very small to moderately large agamids with body slightly compressed to strongly depressed; tympanum exposed (except in C. maculosus); a series of enlarged tectiform scales sweeping up in a flat S-curve from below eye to above ear; and mostly with (1) dorsals small, their keels directed back towards midline; (2) numerous femoral and pre-anal pores, each located between 4 scales (anterior usually largest; (3) alignment of pre-anal pores directed forwards towards midline; and (4) black markings on breast and throat of males (STORR 1982).

Variation: Ctenophorus decresii exhibits remarkable variation in coloration both within and among populations (Houston, 1974; Teasdale et al., 2013; McLean et al., 2013).

Lifestyle: saxicolous.

Group: the Ctenophorus decresii complex consists of four closely related, rock- inhabiting species: C. decresii (Duméril & Bibron 1837), C. fionni (Procter 1923), C. tjantjalka Johnston 1992, and C. vadnappa (Houston 1974). All species are sexually dimorphic with cryptically coloured females and larger, brightly coloured males which perform conspicuous courtship and territorial behaviour (Gibbons, 1979). Overall body form is highly conserved within the group and reflects adaptation to rocky habitats; all species have dorsoventrally flattened heads and bodies (less so in C. tjantjalka) and long hindlimbs (Houston & Hutchinson, 1998). While females and juveniles are similar in appearance among species, male coloration is an obvious distinguishing feature between species (Houston, 1974), and is likely to be an important social signal within the C. decresii complex (Osborne, 2005; Stuart-Fox & Johnston, 2005, McLean et al. 2013).

Syntypes: ZMB 30092, ZMB 54516 (vormals ZMB 30092 part), "Australien", ohne
weitere Angaben; Terra typica: Australien [modestus] 
Etymologynamed after an island, “Ce Grammatophore a été trouvé par Péron et Lesueur, dans l'île de Decrès, en Australasie” (Duméril & Bibron, 1837: 474). 
References
  • Ahl,E. 1926. Neue Eidechsen und Amphibien. Zool. Anz. 67: 186-192
  • Boulenger, G.A. 1885. Catalogue of the Lizards in the British Museum (Nat. Hist.) I. Geckonidae, Eublepharidae, Uroplatidae, Pygopodidae, Agamidae. London: 450 pp. - get paper here
  • 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.
  • Duméril, A. M. C. and G. Bibron. 1837. Erpétologie Générale ou Histoire Naturelle Complete des Reptiles. Vol. 4. Libr. Encyclopédique Roret, Paris, 570 pp. - get paper here
  • Fitzinger, L. 1843. Systema Reptilium, fasciculus primus, Amblyglossae. Braumüller et Seidel, Wien: 106 pp. - get paper here
  • Gibbons, J. R. H. & Lillywhite, H. B. 1981. Ecological segregation, color matching, and speciation in lizards of the Amphibolurus decresii species complex (Lacertilia: Agamidae). Ecology 62: 1573-1584
  • Macey, J. R., J. A. Schulte II, A. Larson, N. B. Ananjeva, Y. Wang, R. Pethiyagoda, N. Rastegar-Pouyani, T. J. Papenfuss 2000. Evaluating trans-Tethys migration: an example using acrodont lizard phylogenetics. Systematic Biology 49 (2): 233-256 - get paper here
  • Manthey,U. & SCHUSTER,N. 1999. Agamen, 2. Aufl. Natur und Tier Verlag (Münster), 120 pp. - get paper here
  • McLean, Claire A., Adnan Moussalli, Steve Sass, and Devi Stuart-Fox 2013. Taxonomic Assessment of the Ctenophorus decresii Complex (Reptilia: Agamidae) Reveals a New Species of Dragon Lizard from Western New South Wales. Records of the Australian Museum 65(3): 51–63 - get paper here
  • McLean, Claire A; Devi Stuart-Fox and Adnan Moussalli 2015. Environment, but not genetic divergence, influences geographic variation in colour morph frequencies in a lizard BMC Evolutionary Biology 15:156<br />DOI: 10.1186/s12862-015-0442-x - get paper here
  • Rankin K, Stuart-Fox D 2015. Testosterone-Induced Expression of Male Colour Morphs in Females of the Polymorphic Tawny Dragon Lizard, Ctenophorus decresii. PLoS ONE 10(10): e0140458, doi:10.1371/journal.pone.0140458 - get paper here
  • Sass, S & Swan, G. 2010. A newly discovered population of the endangered Tawny Rock Dragon Ctenophorus decresii in far western New South Wales and a description of its habitat. Herpetofauna (Sydney) 40 (1): 52-57 - get paper here
  • Storr, G. M. 1982. Revision of the bearded dragons (Lacertilia: Agamidae) of Western Australia with notes on the dismemberment of the genus Amphibolurus. Rec. West. Aust. Mus. 19 (2): 199-214 - 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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