You are here » home advanced search search results Ctenophorus modestus

Ctenophorus modestus (AHL, 1926)

Can you confirm these amateur observations of Ctenophorus modestus?

Add your own observation of
Ctenophorus modestus »

We have no photos, try to find some by Google images search: Google images

Higher TaxaAgamidae (Amphibolurinae), Sauria, Iguania, Squamata (lizards)
Subspecies 
Common Names 
SynonymAmphibolurus modestus AHL 1926: 187 (fide COGGER 1983)
Ctenophorus modestus — STUART-FOX et al. 2020
Ctenophorus modestus — DONG et al. 2021 
DistributionAustralia (South Australia)

Type locality: “Australien”, without further details  
Reproductionoviparous 
TypesLectotype: ZMB 54516, subadult male; paralectotype: ZMB 30092, adult female, designated by Dong et al. 2021. 
DiagnosisDiagnosis. Ctenophorus modestus is a member of the C. decresii species group (Houston, 1974; Houston and Hutchinson, 1998). Within the C. decresii species group, C. modestus is distinguishable by the following combination of characters: snout scales smooth to longitudinally keeled; vertebral scales flat; a smooth-edged dark lateral stripe, sometimes interrupted to form a separate blotch posterior to the tympanum; and in males, throat coloration is polymorphic (orange, yellow, orange-yellow, or gray) with or without an overlay of gray reticulations and a small central black patch (Dong et al. 2021).

Description. A moderately sized lizard reaching a maximum SVL of approximately 85 mm and total length of 255 mm. Head and body depressed. Tail long and tapered to a fine tip. Forelimbs moderately long, almost reaching groin when adpressed. Hindlimbs long and reaching or almost reaching snout when adpressed. Finger lengths: 4 > 3 > 5 > 2 > 1; toe lengths: 4 > 3 > 5 > 2 > 1. Characteristic of the genus, a distinct row of enlarged keeled scales extending from the nostril, below the eye to above the tympanum (Houston and Hutchinson, 1998). Ear membranes exposed and scale-free. Scales on snout are smooth to longitudinally keeled. 13–18 supralabial scales; 13–18 infralabial scales; 4–6 scales between rostral and nasal; 4–6 scales between supralabial and nasal; 9– 13 internasal scales; 19–27 subdigital lamellae on the fourth toe (McLean et al., 2013). Small clustered pale yellow to orange spines anterior to tympanum. Dorsal crest is small, no more than a series of keeled scales, becoming smaller posteriorly and not reaching base of tail. Nuchal crest low or absent. Scales on the dorsal surfaces of the limbs and tail are keeled. The gular fold is strongly developed and extends across the shoulders. 34–45 femoral and precloacal pores are arranged in a straight line along the thighs. Pores are present but smaller in females.
Adult male base color varies from gray-blue to brown, with pale blue flanks (Figs. 1H, 4C). The dorsolateral surface of the head is brown, with orange around the eyes, nostrils, and along the upper jaw, and beneath the tympanum terminating at the neck. The extent of this coloration varies among individuals and depends on location. A broad black lateral stripe begins posterior to the eye, becoming thicker posterior to the tympanum and terminating at the groin. A thin cream, yellow, or orange stripe begins at the tympanum and terminates just posterior to the shoulder (Figs. 1H, 4C). On the ventral surface, males are cream with orange flushes on the belly, hindlimbs, and the length of the tail during the breeding season. A dark chest patch tapers to a point midbody and sometimes extends along the undersides of theforelimbs.Thisdarkpatchmayvaryinintensity,from black to gray. Male throat coloration varies among individuals with distinct gray, orange, yellow, and orange-yellow morphs (Teasdale et al., 2013; Fig. 1D–G). Base throat color sometimes overlain with gray reticulations or with a distinct black mark in the center of the throat.
Adult females are cryptically colored, predominantly gray-brown to orange-brown, densely patterned with darker and lighter speckling (Fig. 4D) and sometimes a thin, pale vertebral line. Similar to males, a black lateral stripe runs along the flanks, but sometimes less prominently than in males. White to cream on the ventral surface, with varying degrees of gray reticulations on the throat. Orange to yellow flushes on the belly and gular region during the breeding season. Juveniles resemble adult females in coloration and pattern. Color patterning remains visible in fresh spiritpreserved specimens but fades with time (Dong et al. 2021). 
CommentWells and Wellington (1985) previously resurrected C. modestus (Ahl, 1926) from synonymy with C. decresii and nominated the larger of the two syntypes as a lectotype. However, they provided no rationale or evidence to support this decision. See Dong et al. 2021 for a discussion why they regard Wells and Wellington’s (1985) recognition of C. modestus as unavailable. 
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
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bian, X., Pinilla, A., Chandler, T., & Peters, R. 2021. Simulations with Australian dragon lizards suggest movement-based signal effectiveness is dependent on display structure and environmental conditions. Scientific Reports, 11(1): 1-11 - get paper here
  • 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. - get paper here
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Dong, Caroline M.; Greg R. Johnston, Devi Stuart-Fox, Adnan Moussalli, Katrina J. Rankin, Claire A. McLean 2021. Elevation of Divergent Color Polymorphic and Monomorphic Lizard Lineages (Squamata: Agamidae) to Species Level. Copeia 109 (1): 43–54 - get paper here
  • 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 - get paper here
  • Lewis AC, Rankin KJ, Pask AJ, Stuart-Fox D. 2017. Stress-induced changes in color expression mediated by iridophores in a polymorphic lizard. Ecol Evol. 00:1–11 - get paper here
  • 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
  • Stuart‐Fox, D., Aulsebrook, A., Rankin, K.J., Dong, C.M. and McLean, C.A. 2020. Convergence and divergence in lizard colour polymorphisms. Biological Reviews - get paper here
  • Tallowin, Oliver J S; Shai Meiri, Stephen C Donnellan, Stephen J Richards, Christopher C Austin, Paul M Oliver, 2019. The other side of the Sahulian coin: biogeography and evolution of Melanesian forest dragons (Agamidae). Biological Journal of the Linnean Society 129: 99-113. - get paper here
  • Wilson, S. & Swan, G. 2010. A complete guide to reptiles of Australia, 3rd ed. Chatswood: New Holland, 558 pp.
  • Yewers MSC, Stuart‐Fox D, McLean CA. 2018. Space use and genetic structure do not maintain color polymorphism in a species with alternative behavioral strategies. Ecol Evol. 2018;00:1–12 - get paper here
 
External links  
Is it interesting? Share with others:

As link to this species use URL address:

https://reptile-database.reptarium.cz/species?genus=Ctenophorus&species=modestus

without field 'search_param'. Field 'search_param' is used for browsing search result.



Please submit feedback about this entry to the curator