Trimeresurus guoi CHEN, SHI, VOGEL & DING, 2021
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Trimeresurus guoi
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| Higher Taxa | Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| 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) |
| Reproduction | |
| Types | Holotype: YNJC0012 adult male, a roadkill, collected by Ding Li, on 9 September 2019 Paratypes: (n = 9): CIB |
| Diagnosis | 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. For additional detailed comparisons see 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). |
| Comment | |
| 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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