Taxonomic revision of the Andean leaf-eared mouse, Phyllotis andium Thomas 1912 (Rodentia: Cricetidae), with the description of a new species.
Taxonomic revision of the Andean leaf-eared mouse, Phyllotis andium Thomas 1912 (Rodentia: Cricetidae), with the description of a new species.
复制标题
安第斯叶耳鼠 Phyllotis andium Thomas 1912（啮齿目：仓鼠科）的分类学修订，并描述了一个新物种。
作者：
Edgardo M. Rengifo;V. Pacheco
安第斯山脉叶耳鼠(Phyllotis Andium Thomas 1912)被认为是一种分布广泛的中型乙型啮齿动物(全长230毫米，体重约35克)，分布在厄瓜多尔通古拉瓦，穿过安第斯山脉，一直到秘鲁的利马。早先对凤眼莲的研究发现了该物种内形态地理变异的证据，这可能是因为在凤眼莲的分布范围内存在几个潜在的地理障碍。我们在对92个地点的330个标本进行定性和定量形态分析的基础上，对该种进行了分类修订。这包括与钠/朋友组的其他物种进行适当的比较，并根据细胞色素b序列进行分子分析。其结果是，形态定性分析表明可以识别出三个不同的分类群，这得到了形态定量和分子分析的支持。这里确定的三个分类群具有由重要的地理屏障隔开的异地分布范围。根据这些鉴定标准，从厄瓜多尔的通古拉华到秘鲁的瓦努科的样品现在被认为是P.andium，并包括作为同义词的Melius和Fruticicolus；来自秘鲁安第斯山脉西部Anash和Lima省的南部种群被提议代表一新种；我们认识到P.stopops是一个有效的种，Tamborum为同义词。最后，我们假设这三个物种的多样性与安第斯造山作用中的关键事件有关。
The Andean Leaf-eared mouse, Phyllotis andium Thomas 1912, has been considered a widespread medium-size sigmodontine rodent (230 mm of total length and 35 grams approximately) that occurs from Tungurahua, Ecuador, through the Andes, to Lima, Peru. Previous studies performed on Phyllotis noted evidence of morphological geographical variation within the species, which is likely because of the several potential geographical barriers that exist within the distribution range of P. andium. We carried out a taxonomic revision of this species based on qualitative and quantitative morphological analyses of 330 specimens from 92 localities. This included appropriate comparisons with other species of the andium/amicus group and performed molecular analysis based on cytochrome b sequences. As a result, morphologic qualitative analysis suggested the recognition of three different taxa, which are supported by morphologic quantitative and molecular analyses. The three taxa here identified have allopatric distributional ranges separated by important geographic barriers. Following these identification criteria, P. andium is now recognized for the samples from Tungurahua, Ecuador to Huánuco, Peru, and includes melanius and fruticicolus as synonymous; the southern populations from the Ancash and Lima departments, in the western Peruvian Andes, are proposed to represent a new species; and we recognize P. stenops as a valid species with tamborum as a synonym. Finally, we postulate that the diversification of these three species is related to key events in the Andean orogeny.