First report of albinism for Achalinus sheni (Serpentes, Xenodermidae), with extended diagnosis of the species Author Xu, Yu-Hao 0000-0001-6094-6680 State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China Author Wang, Shuai State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China Author Ma, Shun Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China & University of Chinese Academy of Science, Beijing 100049, China Author Burbrink, Frank T. Department of Herpetology, The American Museum of Natural History, New York NY 10024, USA Author Peng, Li-Fang 0000-0001-9325-7048 State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China Author Huang, Song Anhui Province Key Laboratory of the Conservation and Exploitation of Biological Resource, College of Life Sciences, Anhui Normal University, Wuhu 241000, China text ZooKeys 2024 2024-08-06 1209 1 17 journal article 300870 10.3897/zookeys.1209.128944 c4580163-20a4-47cf-bf6c-ccca41ab523c PMC11336387 39175834 923C8E76-D352-42AC-A752-1257B7A562D1

Table 4. Comparison of the key morphological characters between Achalinus sheni and A. yunkaiensis obtained from specimens examined in this study, Wang et al. (2019), and Ma et al. (2023 a).
Sex	A. sheni		A. yunkaiensis
Sex	♂	♀	♂	♀
N	6	3	4	3
SVL	122–292	298–354	189–359	204–386
TL	149 – 371	355–416	232–418	256–488 (+)
TAL	27–80	57–67	43–63	52–73
TAL / TL	0.183 – 0.224	0.149–0.164	0.185–0.200	0.156–0.204
SL	3 + 2 + 1	3 + 2 + 1	3 + 2 + 1	3 + 2 + 1
IL	5 (rarely 6)	5	6	6
Chin	2	2	2	2
IFL – 1 stChin	1 th – 3 rd	1 th – 3 rd	1 th – 3 rd	1 th – 3 rd
Lor	1	1	1	1
LorH	0.7–1	0.9–1.3	0.8–1.3	0.7–1.2
LorL	1.3 – 1.7	1.6–1.7	1.3–2.2	1.5–2.2
LorH / LorL	0.53 – 0.93	0.56–0.76	0.56–0.64	0.49–0.55
LSBI vs LSBP	=	=	=	=
TEMP	2 + 2 + 3	2 + 2 + 3 or 2 + 2 + 4 or 2 + 1 + 4	2 + 2 + 3 or 2 + 2 + 4	2 + 2 + 3 or 2 + 2 + 4
ATUL	1.3–1.5	1.7	1.2–2.2	1.9–2.9
SPO	1	1	1	1
SPOL	1.1–1.6	1.6–1.9	1–1.6	1.3–1.6
SPOL / ATUL	0.99 – 1.16	0.94–1.12	0.66–0.83	0.55–0.65
DSR	23 - 23 - 23	23-23 - 23	23-23 - 23	23-23 - 23
VS	161 – 170	172–174	151–162	144–156
CP	1	1	1	1
SC	55–61	46–49	49–56	51–55
VS + SC	220 – 226	219–221	200–212	195–205