A new species of the genus Lyperosomum Looss, 1899, from the intestine of the golden-fronted woodpecker (Melanerpes aurifrons) from northern Mexico is described. Lyperosomum cuauhxinqui sp. n. is morphologically distinguished from other congeneric species from the Americas by a higher oral/ventral sucker ratio and its body length and width. The sequences of domains D1–D3 of the large subunit (LSU) of nuclear ribosomal DNA and cytochrome c oxidase subunit 1 (cox 1) from the mitochondrial DNA of the new species were obtained and compared with available sequences from GenBank. The genetic divergence estimated between the new species and other congeneric species ranged from 2 to 6% and 13.4 to 17.3% for LSU and cox 1, respectively. Phylogenetic analyses based on the two (LSU and cox 1) molecular markers consistently showed that L. cuauhxinqui sp. n. was nested within the genus Lyperosomum, with strong bootstrap support (100%) and Bayesian posterior probabilities (1.0). In particular, the LSU tree indicated that the sequence of the new species is closely related to sequences from Zonorchis alveyi, Zonorchis delectans and Zonorchis sp. from Central America, suggesting that these sequences should be transferred to the genus Lyperosomum. The new species represents the first record from Mexico and the fifth species identified in the Americas. Our study also revealed that the taxonomy of the genus Lyperosomum should be re-examined by combining molecular, morphological and ecological characteristics.

中文翻译：

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形态学和分子学证据揭示了来自墨西哥北部的 Melanerpes aurifrons (Wagler, 1829) 的新种 Lyperosomum Looss, 1899 (Digenea: Dicrocoeliidae)

该属的一个新种紫苏洛斯，1899，来自金额啄木鸟的肠子（黑线虫) 来自墨西哥北部的描述。高新槲寄生sp。n. 在形态上与美洲其他同属物种的区别在于较高的口/腹吸盘比率及其体长和宽度。核糖体 DNA 和细胞色素大亚基 (LSU) 的结构域 D1-D3 的序列C氧化酶亚基 1 (考克斯 1) 从新物种的线粒体 DNA 中获得，并与来自 GenBank 的可用序列进行比较。LSU 和其他同类物种之间的遗传差异估计在 2% 到 6% 和 13.4% 到 17.3% 之间。考克斯 1， 分别。基于两者的系统发育分析（LSU 和考克斯 1) 分子标记一致表明L. cuauhxinquisp。n. 嵌套在该属内紫苏，具有强大的引导支持 (100%) 和贝叶斯后验概率 (1.0)。特别是，LSU 树表明新物种的序列与来自的序列密切相关。带状绦虫,Zonorchis delectans和癞蛤蟆sp。来自中美洲，表明这些序列应该转移到该属嗜血杆菌。这个新物种代表了墨西哥的第一个记录，也是美洲发现的第五个物种。我们的研究还揭示了该属的分类学紫苏应结合分子学、形态学和生态学特征进行复查。