Trimeresurus guoi CHEN, SHI, VOGEL & DING, 2021
Can you confirm these amateur observations of Trimeresurus guoi?
|Higher Taxa||Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Guo’s green pit viper|
Chinese: Diān Nán Zhú Yè Qīng (滇南竹叶青)
|Synonym||Trimeresurus guoi CHEN, SHI, VOGEL & DING 2021|
Trimeresurus albolabris – ZHU et al. 2016
|Distribution||China (Yunnan), Vietnam (Lao Cai), Thailand (Loei and Pha Yao) and Myanmar (Mon State)|
Type locality: Jiangcheng County, Yunnan Province,China (22.5738°N, 101.6095° E)
|Types||Holotype: YNJC0012 adult male, a roadkill, collected by Ding Li, on 9 September 2019|
Paratypes: (n = 9): CIB
|Diagnosis||(1) Dorsal body jungle-green with faint transverse dark bands on skin, ventral body yellow green. (2) Lateral head jungle-green above lower margin of eyes, and green yellow below, without postocular stripes. (3) Ventrolateral line of male yellow-green, narrow, only present on outermost row of dorsal scales. (4) Iris firebrick-red in both sexes. (5) First supralabial fused with nasal. (6) Head scales feebly keeled; dorsal scale row 23-21-15 (N = 10), feebly keeled except the outermost rows;ventral scale 154–163 in males (N = 6), 158–160 in females (N =3); subcaudal scale 58–72 in males (N = 7), 52–59 in females (N= 3). (7) Hemipenes long, reaching 23rd/32nd subcaudals when unextruded/extruded, papillae relatively weak and sparse. (CHEN et al. 2021).|
Comparisons: The new species morphologically differs from T. albolabris in the yellow green ventral color; an indistinct ventrolateral line; the absence of a postocular stripe; the firebrickred iris; a dark red stripe on dorsal tail; hemipenes with relatively weak sparse papillae, reaching 23rd subcaudal when unextruded. (CHEN et al. 2021).
Color in life: Dorsal head and body jungle green. Lateral head jungle-green above lower margin of eyes, and green-yellow below, without postocular stripes. Dark transverse bands the width of one to three dorsal scales present on body,. Lateral body mostly jungle-green, gradually lighter from spine to ventrals. First row of dorsal scales grass-green, with a narrow green-yellow longitudinal stripe, which forms a faint green-yellow ventrolateral line. Ventral body yellow-green, becoming lighter in color anteriorly. Tail with a dark red longitudinal stripe in inner two rows of dorsal scales, other dorsal scales on tail jungle-green. Most SC green-yellow, posterior one third gradually dark red. Iris firebrick-red, pupils edged with lighter color. Tone coloration maroon (CHEN et al. 2021).
|Etymology||The specific name is in honor of Dr. Peng Guo(Sichuan, China), the first researcher on the taxonomy and systematics of the genus Trimeresurus sensu lato through molecular analysis in China.|
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