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Lycodon irwini NAVEEN, MIRZA, CHOURE & CHANDRAMOULI, 2025

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Irwin’s Wolf Snake 
SynonymLycodon irwini NAVEEN, MIRZA, CHOURE & CHANDRAMOULI 2025
Lycodon subcinctus – HARIKRISHNAN et al. (2010).
Lycodon cf. subcinctus – LIU et al. 2023
Lycodon cf. subcinctus – NGUYEN et al. 2024 
DistributionIndia (Great Nicobar Island)

Type locality: near Gandhi Nagar, Great Nicobar Island (6.810923°N, 93.878795°E; 140 m asl)  
Reproduction 
TypesHolotype. DOSMB 05114 (adult female), collected on 15th August 2017 by S.R. Chandramouli.
Paratypes. One adult female, ZSI/ANRC/T/10643 collected from Govind Nagar, at the 10 km point, along the East-West Road, Great Nicobar
Other material: ZSI/ANRC 
DiagnosisDiagnosis (n=3): A Lycodon characterized by the following characters: body size fairly large, maximum known total length up to 1197 mm, slender; preocular maybe present or absent (present here only in the holotype), loreal touching orbit; dorsal scale rows 17-17-15, anterior part of the body with smooth scales and posterior parts with the outer-most rows smooth and the remaining rows feebly keeled; ventral scales 223–238; subcaudals 78–94, paired; TaL/TL 0.20–0.23; supralabials 8, with the 3rd–5th touching orbit; postoculars 2/2; cloacal plate divided. Dorsum overall in a shade of glossy black, lacking bands and ventrally greyish black with cream ventrolateral ridge. (Naveen et al. 2025)


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Comment 
EtymologyNamed after Stephen Robert Irwin (22 February 1962–1964 September 2006), the renowned Australian zookeeper, conservationist, television personality, and wildlife educator. 
References
  • Naveen, R. S., Mirza, Z. A., Choure, G., & Chandramouli, S. R. 2025. A ‘Crikey’new snake: An insular Lycodon Fitzinger, 1826 (Squamata, Colubridae) from the Nicobar Archipelago, India. Evolutionary Systematics, 9, 221-228 - get paper here
  • Nguyen, T.V., Harikrishnan, S., Ray, S., Mohapatra, P.P., Poyarkov, N.A. & David, P. 2026. First description of the male of Lycodon irwini Naveen, Zeeshan, Mirza, Choure & Chandramouli, 2025 (Squamata: Colubridae), with an updated account of the herpetofauna of the Great Nicobar Islands, India. Zootaxa, 5750 (4), 482–504 - get paper here
 
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