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Eutropis dawsoni (ANNANDALE, 1909)

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Higher TaxaScincidae, Mabuyinae (Mabuyini), Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Gans’ grass skink 
SynonymLygosoma dawsoni ANNANDALE 1909: 257
Mabuya gansi DAS 1991
Eutropis gansi — MAUSFELD et al. 2002
Eutropis gansi — BATUWITA 2016
Eutropis dawsoni — GANESH et al. 2021
Eutropis gansi — LINDKEN et al. 2024 
DistributionS India (Tamil Nadu, Kerala)

Type locality: Maddathorai (= Madathara), Shashthamcottah and Tenmalai, Kerala

gansi: Type locality: 2 km NW of Muthalar Road Cross off Sengaltheri-Thalayanai road (towards Moolakasam), Kalkkad Tiger Reserve, Tirunelveli district, Tamil Nadu State, India.  
Reproduction 
TypesLectotype: ZSI 16170 and paralectotypes ZSI 16140, 16171 of Lygosoma dawsoni Annandale, 1909.
Holotype: ZSI 24826 [gansi] 
DiagnosisDiagnosis: A relatively larger species of Eutropis (adult SVL 61 mm) from the Southern Western Ghats, characterised by: a fairly robust and cylindrical body with well-developed limbs; dorsal scales with 5-6 strong keels with 3 pointed spurs projecting behind; post-nasal absent; supra-nasals and pre-frontals separated; fronto-parietals are in contact with each other; inter-parietal completely separating parietals; one pair of broad nuchals; temporal scales with 3-4 keels; ear-hole as large as lateral scale with 3-4 short, pointed anterior lobules; lower eyelids scaly with a series of opaque scales; mid-ventrals: 39-45; 4th toe subdigital lamellae: 14-16; dorsum dark grey-brown without any spots; dark grey-brown lateral stripe extending from posterior corner of eye to a little behind hind limbs (Ganesh et al. 2021).


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CommentSynonymy: Eutropis dawsoni has been considered a synonym of Eutropis (or Mabuya) macularia at least since Smith 1935, but revalidated by Ganesh et al. 2021. See also Eutropis macularia. 
EtymologyE. dawsoni was named after Lieut.-Col. F.W. Dawson, the then Director of Trivandrum Museum, with whom Annandale conducted the expedition on which he found this species.

E. gansi was named after Carl Gans (1923-2009), German-born American herpetologist. See Adler et al. 2010 for obituaries. 
References
  • Annandale, N. 1909. Report on a small collection of lizards from Travancore. Records of the Indian Museum 3: 253-257 - get paper here
  • Batuwita, Sudesh 2016. Description of Two New Species of Eutropis (Reptilia: Scincidae) from Sri Lanka with a Redescription of Eutropis madaraszi (Méhely). Journal of Herpetology 50 (3): 486-496. - get paper here
  • Das I. 1991. A new species of Mabuya from Tamil Nadu State, Southern India (Squamata: Scincidae). Journal of Herpetology 25 (3): 342-344. - get paper here
  • Ganesh, S. R.; Kaushik Deuti, N. S. Achyuthan, Patrick Campbell, Sujoy Raha, Probhat Bag and Sudipta Debnath 2021. Taxonomic reassessment of Eutropis macularia (Blyth, 1853) complex in the Western Ghats of India: Resurrection of Eutropis brevis (Günther, 1875), Eutropis dawsoni (Annandale, 1909) and synonymisation of Eutropis gansi (Das, 1991) (Reptilia: Squamata Rec. zool. Surv. India 121(3): 363–374 - get paper here
  • Mausfeld, Patrick; Andreas SCHMITZ; Wolfgang BÖHME; Bernhard MISOF; Davor VRCIBRADIC; Carlos Frederico Duarte ROCHA 2002. Phylogenetic Affinities of Mabuya atlantica Schmidt, 1945, Endemic to the Atlantic Ocean Archipelago of Fernando de Noronha (Brazil): Necessity of Partitioning the Genus Mabuya Fitzinger, 1826 (Scincidae: Lygosominae). Zool. Anz. 241: 281–293 - get paper here
 
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