Adults of a species of Cryptocotyle were found infecting the intestine of the kelp gull, Larus dominicanus Lichtenstein, 1823, and metacercariae were found in the fins and muscle of the galaxiid fish, Galaxias platei Steindachner, 1898 (local name "puyen grande"), in Nahuel Huapi National Park (Patagonia). Morphometrics and genetic markers of mitochondrial cytochrome oxidase (COI) and ribosomal internal transcribed spacer 1 (ITS1) confirmed that adults and metacercariae were conspecific and represent a new species, Cryptocotyle dominicana n. sp. The only congener known from South America (Cryptocotyle thapari McIntosh, 1953) matures in river otters (Lutra spp. and Pteronura spp.) in Brazil and Bolivia and differs from the new species in the arrangement of the testes, which are located in tandem in the species from otters. Adults of the new species resemble Cryptocotyle lingua (Creplin, 1825) Fischoeder, 1903 from marine environments of the Northern Hemisphere, both species being characterized by having a linguiform body, oblique testes, and vitelline follicles that extend posteriorly to the level of the ventral sucker. Considering the morphological findings that differentiate the new species from other Cryptocotyle, as well as the molecular analysis that shows significant differences from C. lingua, we conclude that these specimens represent a new species, the first of the genus Cryptocotyle to be described from birds in South America.

中文翻译：

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在巴塔哥尼亚淡水环境中感染海藻鸥和加拉克西德鱼的一种新的隐藻种（双子叶植物：杂菌科）：形态和分子分析。

发现一种隐尾藻的成虫感染海带鸥的肠道，Larus dominicanus Lichtenstein，1823年；在鞭尾鱼的鳍和肌肉中发现了尾cer，Galaxias platei Steindachner，1898年（当地名称“ puyen grande”），在纳韦尔瓦皮国家公园（巴塔哥尼亚）。线粒体细胞色素氧化酶（COI）和核糖体内部转录间隔子1（ITS1）的形态计量学和遗传标记证实了成虫和尾were是同种的，并代表一个新物种，隐孢子虫（Cryptocotyle dominicana n）。sp。南美唯一的同类动物（Cryptocotyle thapari McIntosh，1953年）在巴西和玻利维亚的水獭（Lutra spp。和Pteronura spp。）中成熟，并且与新物种的睾丸排列不同，后者串联在一起。水獭的种类。新物种的成年动物类似于北半球海洋环境中的隐尾舌舌（Crepcotyle lingua，1825年）Fischoeder，1903年，这两个物种的特征都是具有舌状体，斜睾丸和卵黄卵泡，这些卵泡向后延伸至腹吸盘的水平。考虑到新物种与其他隐孢子虫有区别的形态学发现，以及分子分析表明它与舌叶隐孢子虫有显着差异，我们得出结论，这些标本代表了一个新物种，隐孢子虫属是鸟类中第一个被描述的物种。南美洲。卵黄卵泡向后延伸至腹侧吸盘的水平。考虑到新物种与其他隐孢子虫有区别的形态学发现，以及分子分析表明它与舌叶隐孢子虫有显着差异，我们得出结论，这些标本代表了一个新物种，隐孢子虫属是鸟类中第一个被描述的物种。南美洲。卵黄卵泡向后延伸至腹侧吸盘的水平。考虑到新物种与其他隐孢子虫有区别的形态学发现，以及分子分析表明它与舌叶隐孢子虫有显着差异，我们得出结论，这些标本代表了一个新物种，隐孢子虫属是鸟类中第一个被描述的物种。南美洲。