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Sitana visiri DEEPAK, 2016

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Higher TaxaAgamidae (Draconinae), Sauria, Iguania, Squamata (lizards) 
Subspecies 
Common NamesPalm leaf fan-throated lizard 
SynonymSitana visiri DEEPAK in DEEPAK et al. 2016 
DistributionIndia (Tamil Nadu)

Type locality: Tuticorin, georeferenced latitude N 8.784993°, longitude E 78.156341°, Thoothukudi, Tamil Nadu state.  
Reproductionoviparous. Breeding males were observed during the month of September and October. Hatchlings were recorded during the month of January. 
TypesHolotype: NCBS AQ054, adult male, collected by V. Deepak and M. Kannan on 17 October 2013. Paratypes. CES 141163, adult male, BNHS 2310 adult female, Tuticorin, georeferenced latitude N8.784993°, longitude E78.156341°, Thoothukudi, Tamil Nadu state, collected by V. Deepak and M. Kannan on 17 October 2013.
 
DiagnosisDiagnosis. Sitana visiri sp. nov. can be distinguished from all the members of Sitana spinaecephalus clade in having a strongly serrated dewlap with extensive blue colouration and a large orange spot (Fig. 3G). Sitana visiri sp. nov. can be distinguished from Sitana ponticeriana, S. bahiri, and S. devakai in having proportionally larger dewlap that extends up to 56% of the length of the trunk (vs 46%, 29%, and 33%, respectively). Additionally Sitana visiri sp. nov. can be distinguished from the other four members of S. ponticeriana clade in having a large SVL; males (50.0 ± 5.2), females (48.5 ± 2.5) vs. S. ponticeriana males (40.5 ± 2.5), females (41.8 ± 4.6); S. bahiri males (40.5- 45.0), females (44.1-46.9) ; S. devakai males (40.0- 45.6), females (42.0-44.9). Details on morphometric data, scale counts and body ratios of select characters for multiple samples are given in Table 3, 7 and 8 in Deepak et al. 2016: 77, 90.
 
CommentDistribution: see map in Deepak et al. 2016: 80 (Fig. 8).

Habitat. coastal sand dunes, grassland habitats, Prosopis juliflora dominated areas, and grassland plains in the southern Tamil Nadu.

Sympatry: Eutropis carinata, Eutropis bibroni, and Calotes versicolor. 
EtymologyThe species epithet is derived from the regional Tamil language for a palm leaf fan, a hand crafted fan made from palm leaf. The dewlap of this species resembles a local palm leaf fan. 
References
  • DEEPAK, V.; AKSHAY KHANDEKAR, SANDEEP VARMA, R. CHAITANYA 2016. Description of a new species of Sitana Cuvier, 1829 from southern India. Zootaxa 4139 (2): 167–182 - get paper here
  • Deepak, V.; Varad B. Giri, Mohammad Asif, Sushil Kumar Dutta, Raju Vyas, Amod M. Zambre, Harshal Bhosale, K. Praveen Karanth 2016. Systematics and phylogeny of Sitana (Reptilia: Agamidae) of Peninsular India, with the description of one new genus and five new species Contributions to Zoology 85 (1): 67-111 - get paper here
 
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