Derycke Elizabeth G, Gottscho Andrew D, Gottscho Andrew D, Mulcahy Daniel G, DE Queiroz Kevin
Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, 10th St and Constitution Ave NW, Washington DC 20560 Department of Environmental Studies, McDaniel College, 2 College Hill, Westminster, MD 21157.
Zootaxa. 2020 May 13;4778(1):zootaxa.4778.1.3. doi: 10.11646/zootaxa.4778.1.3.
Fringe-toed lizards (Uma) are among the most specialized lizards in North America, adapted to insular windblown sand habitats in the hyper-arid southwestern deserts, with allopatric distributions, subtle morphological variation, and an unstable taxonomic history. We analyzed a morphological dataset of 40 characters for 65 specimens and a molecular dataset of 2,286 bases from three mitochondrial loci for 92 individuals and interpreted these data alongside published analyses of multi-locus genetic data with the goal of revising the taxonomy of the Uma notata (Baird 1858) species complex. We confirmed that fringe-toed lizards from the Mohawk Dunes in southwestern Arizona (U. sp.) constitute a cryptic species sister to the rest of the complex that can be diagnosed with DNA barcoding and geography, so we describe and name this species Uma thurmanae sp. nov. We also confirmed the evolutionary distinctiveness of U. inornata (Cope 1895), an endangered species endemic to Coachella Valley in southern California. We designate a lectotype for the taxon U. "rufopunctata", but we put its name in quotation marks to reflect its uncertain taxonomic status with respect to its neighboring species U. cowlesi and U. notata.
饰边趾虎（Uma）是北美最具特色的蜥蜴之一，适应于极度干旱的西南沙漠中风蚀的岛屿沙地栖息地，具有异域分布、细微的形态变异和不稳定的分类历史。我们分析了65个标本的40个形态特征数据集以及92个个体的三个线粒体基因座的2286个碱基的分子数据集，并结合已发表的多位点遗传数据分析来解读这些数据，目的是修订饰边趾虎（Uma notata，Baird 1858）物种复合体的分类。我们证实，来自亚利桑那州西南部莫霍克沙丘的饰边趾虎（U. sp.）构成了该复合体其他成员的姐妹隐存种，可通过DNA条形码和地理信息进行鉴别，因此我们描述并命名了这个物种，即瑟曼饰边趾虎（Uma thurmanae sp. nov.）。我们还证实了加州南部科切拉谷特有的濒危物种无饰饰边趾虎（U. inornata，Cope 1895）在进化上的独特性。我们指定了分类单元U. “rufopunctata”的选模标本，但我们将其名称置于引号中，以反映其相对于邻近物种考氏饰边趾虎（U. cowlesi）和饰边趾虎（U. notata）的不确定分类地位。
