A ‘ Crikey’ new snake: An insular Lycodon Fitzinger, 1826 (Squamata, Colubridae) from the Nicobar Archipelago, India Author Naveen, R. S. Department of Ecology and Environmental Sciences, School of Life Sciences, Pondicherry University, Puducherry, India Author Mirza, Zeeshan A. 0000-0003-1685-9816 Max Planck Institute for Biology, Max-Planck-Ring 1, Tübingen 72076, Germany Author Choure, Girish Sr. no. 53 / 58, Mahatma Phule Chowk, Sainath Nagar, Vadgaon Sheri, Pune 411014, Maharashtra, India Author Chandramouli, S. R. 0000-0003-0626-0527 Department of Ecology and Environmental Sciences, School of Life Sciences, Pondicherry University, Puducherry, India text Evolutionary Systematics 2025 2025-11-07 9 2 221 228 journal article 313033 10.3897/evolsyst.9.170645 e21ebab3-7972-4bb2-9743-bb59bd2ee079

Table 1. Morphological data of Lycodon irwini sp. nov. Remarks: – = data not available; M = adult male; F = adult female.

Species	Lycodon irwini sp. nov.	Lycodon irwini sp. nov.	Lycodon irwini sp. nov.
Voucher No:	DOSMB 05114	ZSI 10643	ZSI Uncatalogued
Status	Holotype	Paratype	Referred material
Sex	F	F	F
Location	Gandhi Nagar, GN	Govind Nagar, GN	Galathia, GN
SVL (mm)	963	660	550
TAL	234	180	160
TL	1197	840	710
TAL / TL	0.2	0.21	0.22
Head length	25.34	–	–
Head width	22.33	–	–
Head depth	12.92	–	–
Eye dia	3.09	–	–
Eye- nostril	5.02	–	–
Eye - snout	10.26	–	–
scalerows	17: 17: 15	17: 17: 15	17: 17: 15
ventrals	226	223	238
subcaudals divided	78	94	92
Anal	2	2	2
SnL	10.14	–	–
SnW	7.27	–	–
IoD	11.14	–	–
FrontalL	7.8	–	–
FrontalW	4.64	–	–