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Calotes irawadi ZUG, BROWN, SCHULTE & VINDUM, 2006

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Higher TaxaAgamidae (Draconinae), Sauria, Iguania, Squamata (lizards) 
Common Names 
SynonymCalotes irawadi ZUG, BROWN, SCHULTE & VINDUM 2006 
DistributionMyanmar (Burma)

Type locality: MYANMAR: Sagaing Division, Chatthin Wildlife
Sanctuary, San Myaung Camp (23°34′27.6′′N, 95°44′15.6′′E; ca. 110 m elevation), approx. 2 km WNW of Chatthin. 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.
TypesHolotype: USNM 520543, an adult male by local collector, 17 July 1997. 
CommentDIAGNOSIS.— Calotes irawadi is a member of the versicolor species group and shares the obliquely posteriorad or vertical scale-row orientation on the neck and adjacent supra-axillary area with all other versicolor group members except C. htunwini. It differs from C. versicolor (Pondicherry population) by a much smaller body size (female, male means 77.4, 82.4 mm SVLvs. 93 mm, 119 mm, respectively), and more Dorsal (means 48.9 vs. 40.8) and Midbody (47.1 vs 42.8). Middorsal crest scales in C. irawadi are smaller (equal to tympanum diameter) and are straighter and more numerous than C. versicolor (Pondicherry) with crest scales to 2.5–3.0×diameter of tympanum. Lengths of supratympanic spines in C. irawadi are half or less the diameter of tympanum and 2/3 or more tympanum diameter in C. versicolor (Pondicherry). C. irawadiaverages smaller than Moyingyi and Nat-Ma-Taung “versicolor” and has fewer Dorsal. It differs from eastern Thailand “versicolor” by more Dorsal and in coloration by the usual presence of DorsalSt and NucSpot [from ZUG & VINDUM 2006]. 
EtymologyETYMOLOGY.— Irawadi is a variant spelling of Ayeyarwaddy and is used as a noun in apposition. Our use of Irawadi refers to the broad distribution of this species in the central portion of the Ayeyarwaddy River basin. 
  • Das, Abhijit; Uttam Saikia, B. H. C. K. Murthy, Santanu Dey and Sushil K. Dutta 2009. A herpetofaunal inventory of Barail Wildlife Sanctuary and adjacent regions, Assam, north-eastern India. Hamadryad 34 (1): 117 – 134
  • Manthey U 2008. Agamid lizards of Southern Asia, Draconinae 1. Terralog 7, 160 pp.
  • Zug, G. R., H. H. K. Brown, J. A. Schulte II, and J. V. Vindum 2006. Systematics of the Garden Lizards, Calotes versicolor Group (Reptilia, Squamata, Agamidae), in Myanmar: Central Dry Zone Populations. Proc. Cal. Acad. Sci. 57 (2):35-68.
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