Grummer Jared A, Bryson Robert W
Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Box 351800, Seattle, WA 98195-1800, USA; Email:
Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Box 351800, Seattle, WA 98195-1800, USA; Email: unknown.
Zootaxa. 2014 Apr 22;3790:439-50. doi: 10.11646/zootaxa.3790.3.3.
A new species of bunchgrass lizard in the Sceloporus scalaris group is described from the southern portion of the Sierra Madre Occidental in Mexico. The new species, Sceloporus aurantius sp. nov., was previously confused with S. brownorum but differs from this and all but one species within the S. scalaris group by a lack of blue belly patches in males. It shares with S. chaneyi an absence of blue belly patches, but differs from this species in size, number of dorsal scales, number of scales around midbody, and presence of an un-patterned morph. The new species further differs from S. chaneyi, and all other species in the S. scalaris species group, by unique phylogenetic position revealed through species delimitation based on multi-locus nuclear DNA. Principal component analyses of 24 traditional morphological characters used to describe previous S. scalaris group taxa indicate that these characters may be of limited use to delineate species in this species group. However, male lateral and ventral coloration may still be an important character for diagnosing species.
在墨西哥西马德雷山脉南部发现了一种新的束草蜥，属于斯氏束草蜥（Sceloporus scalaris）种群。新物种斯氏橙腹束草蜥（Sceloporus aurantius sp. nov.）之前被误认为是布朗氏束草蜥（S. brownorum），但与该种群中除一个物种外的其他所有物种不同，雄性个体没有蓝色腹部斑块。它与查氏束草蜥（S. chaneyi）一样没有蓝色腹部斑块，但在体型、背鳞数量、体中部鳞片数量以及有无无斑纹形态方面与该物种不同。通过基于多位点核DNA的物种界定所揭示的独特系统发育位置，新物种进一步区别于查氏束草蜥以及斯氏束草蜥种群中的所有其他物种。对用于描述之前斯氏束草蜥种群分类单元的24个传统形态特征进行主成分分析表明，这些特征在界定该物种群中的物种时可能用途有限。然而，雄性的侧面和腹面颜色可能仍是诊断物种的重要特征。
