Pham Anh VAN, Pham Cuong The, LE Minh Duc, Ngo Hanh Thi, Ong An Vinh, Ziegler Thomas, Nguyen Truong Quang
Faculty of Environmental Sciences; University of Science; Vietnam National University; Hanoi; 334 Nguyen Trai Road; Hanoi; Vietnam; Center for Biodiversity & Environment Research; Tay Bac University; Son La City; Son La Province; Vietnam.
Institute of Ecology and Biological Resources; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet Road; Hanoi 10072; Vietnam; Graduate University of Science and Technology; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet Road; Cau Giay; Hanoi 10072; Vietnam.
Zootaxa. 2023 Apr 19;5270(1):48-66. doi: 10.11646/zootaxa.5270.1.2.
Based on morphological and molecular analyses, we herein describe a new species of Achalinus from northern Vietnam. Achalinus quangi sp. nov. differs from its sister taxon, A. emilyae, and other members of the genus Achalinus by at least 4% in terms of genetic divergence based on fragments of the mitochondrial COI and Cytb genes and a combination of the following morphological characters: (1) maxillary teeth 27-29; (2) suture between the internasals distinctly longer than that between the prefrontals; (3) loreal not fused with prefrontal, extending from the nasal to the eye; (4) supralabials six; (5) infralabials five; (6) postocular absent, temporals 2+2, only the upper one in broad contact with eye; (7) dorsal scales in 25(23)-23-23(21) rows, keeled; (8) ventrals 139-141 in males, 141-154 in females; (9) subcaudals 75-84 in males, 69 in the female, all unpaired; (10) cloacal entire; (11) dorsum reddish brown to brown. Achalinus quangi sp. nov. consists of two subclades, the first one occurring on the northern side of the Da River in Son La and Tuyen Quang provinces and another subclade found on the southern side in Thanh Hoa, Nghe An, and Ha Tinh provinces. These two subclades are separated from each other by 1.8 to 2.3% genetic divergence and are slightly differing in ventral scalation.
基于形态学和分子分析，我们在此描述一种来自越南北部的新滑蜥属物种。广氏滑蜥（Achalinus quangi sp. nov.）与其姐妹分类群艾氏滑蜥（A. emilyae）以及滑蜥属其他成员相比，基于线粒体细胞色素氧化酶亚基I（COI）和细胞色素b（Cytb）基因片段，其遗传分歧至少为4%，并具有以下形态特征组合：（1）上颌齿27 - 29枚；（2）鼻间骨缝明显长于额前骨缝；（3）眶下鳞不与额前鳞愈合，从鼻鳞延伸至眼；（4）上唇鳞6枚；（5）下唇鳞5枚；（6）无后眼鳞，颞鳞2 + 2，仅上枚与眼广泛接触；（7）背鳞25（23）-23 - 23（21）行，具棱；（8）雄性腹鳞139 - 141枚，雌性141 - 154枚；（（9）雄性尾下鳞75 - 84枚，雌性69枚，均为单枚；（10）泄殖孔完整；（11）背部红棕色至棕色。广氏滑蜥（Achalinus quangi sp. nov.）由两个亚分支组成，第一个出现在山萝省和宣光省黑河以北地区，另一个亚分支出现在清化省、义安省和河静省以南地区。这两个亚分支之间的遗传分歧为1.8%至2.3%，腹鳞特征略有不同。
