Lizards of the genus Dendragama are endemic to the highland cloud forests of Sumatra’s Barisan Mountain Range in western Indonesia, and recent studies have uncovered widespread diversity within the genus. Here, a suite of morphological characters and mitochondrial DNA are used to compare three geographically isolated populations of D. boulengeri from (1) Mount Kerinci in Jambi province, (2) Mount Marapi of west Sumatra, and (3) the Karo Highlands of north Sumatra. Additional phylogeographic analyses with two recently described sister species, D. australis and D. dioidema were conducted. Five genetically distinct clades of Dendragama, all distributed allopatrically of one another were identified and some are suspected to inhabit small distributions. Morphological and genetic data confirm the Karo Highlands population D. schneideri (previously Acanthosaura schneideri Ahl, 1926) should be revalidated from the synonymy of D. boulengeri. Dendragama schneideri is endemic to montane forests of the Karo Highlands surrounding Lake Toba in Sumatra Utara province. Pairwise genetic distances of 6–11% separate D. schneideri from congeners. Two distinct clades of D. boulengeri from Mount Kerinci and Mount Marapi were identified, which are 5.0% genetically distant from one another. Using morphological characters, we provide the first key for distinguishing between species of Dendragama. Based on biogeographic patterns and levels of genetic variation it is suspected that at least 18 other isolated cloud forest locations may hold new species or divergent populations of Dendragama but lack survey work. Collectively, these comparisons among populations of montane lizards further elucidate the complex biogeographic history of Sumatra’s montane forest species and the first phylogeny of the genus Dendragama.

中文翻译：

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苏门答腊Dendragama属的云林蜥蜴的系统发育和生物地理学以及Acanthosaura schneideri的地位

Dendragama属的蜥蜴是印度尼西亚西部苏门答腊Barisan山脉的高地云雾森林特有的，最近的研究发现该属内的广泛多样性。在这里，使用一组形态学特征和线粒体DNA来比较来自（1）占碑省的Kerinci山，（2）苏门答腊西部的Marapi山和（3）北部的Karo高地的三个地理分离的D. boulengeri种群。苏门答腊。对另外两个最近描述的姊妹物种D. australis和D. dioidema进行了额外的系统地理分析。鉴定了五个具有遗传差异的De​​ndragama进化枝，它们彼此异源分布，并且怀疑其中的一些分布很小。形态和遗传数据证实了Karo高地人口D。schneideri（以前是Acanthosaura schneideri Ahl，1926年）应从D. boulengeri的同义词重新验证。Dendragama schneideri是苏门答腊塔拉省Toba湖周围的Karo高地山地森林特有的。成对的D. schneideri与同类动物分开的成对遗传距离为6-11％。鉴定出了来自克林西山和马拉皮山的两个D. boulengeri进化枝，它们之间的遗传距离为5.0％。使用形态特征，我们提供了区分Dendragama物种的第一个关键。根据生物地​​理模式和遗传变异水平，怀疑至少有18个其他孤立的云林地区可能拥有Dendragama的新物种或不同种群，但缺乏调查工作。总的来说，