A New Species of Trimeresurus Lacépède, 1804 (Squa mata : Viperidae) from Southwestern China, Vietnam, Thailand and Myanmar

• 作者: Zening CHEN Shengchao SHI Jun GAO Gernot VOGEL Zhaobin SONG Li DING Rong DAI
• 来源期刊: 亚洲两栖爬行动物研究（英文版）
• 年，卷（期）: 2021,（2）
• 页码范围: 167-177,中插6-中插8
• 页数: 1页
• 语种: 英文
• DOI: 10.16373/j.cnki.ahr.200084

摘要

The pit vipers of the genus Trimeresurus Lacépède, 1804 is one of the largest groups of Asian snakes, distributed from India to China and Indonesia. Recent surveys in Jiangcheng and Simao, Yunnan Province, China resulted in a new species previously allocated to T. albolabris. Combining morphological and molecular data, we describe it as Trimeresurus guoi sp. nov.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 firebrick-red iris; a dark red stripe on dorsal tail; hemipenes with relatively weak sparse papillae, reaching 23rd subcaudal when unextruded. Molecularly, the new species forms a clearly divergent lineage (BPP 1.00/ UFB 100). Uncorrected pairwise distances of mitochondrial gene Cyt b between the new species and other known species of the subgenus Trimeresurus range from 0.052 (T. albolabris) to 0.071 (T. insularis ).