Abstract A new species of Redudasys (Macrodasyida: Redudasyidae) is described from Texas and Oregon, U.S.A. A single Texas specimen was reported (but not formally described and named) in 2014 from an artesian outflow in Spring Lake, San Marcos, Texas. The Texas specimen provided the first record of Redudasys from outside Brazil. Fifteen specimens were found and studied in 2015 and 2016 from sand pockets among boulders in the Little Nestucca River, near Pacific City, Oregon. Redudasys neotemperatus n. sp. is morphologically and genetically distinguishable from Redudasys fornerise Kisielewski, 1987a, the only formally described species in the genus up until now, and morphologically distinguishable from “Redudasys sp.”, an unnamed form reported by Garraffoni et al. in 2010 without genetic information. The Texas and Oregon specimens agree well morphologically and genetically.

中文翻译：

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来自美国的Redudasys（Gastrotricha：Macrodasyida：Redudasyidae）新种

摘要 来自美国德克萨斯州和俄勒冈州的 Redudasys 新种（Macrodasyida：Redudasyidae）在 2014 年被报道（但未正式描述和命名）来自德克萨斯州圣马科斯斯普林湖的一个自流流出的德克萨斯州标本。得克萨斯州的标本提供了来自巴西以外的 Redudasys 的第一个记录。2015 年和 2016 年，在俄勒冈州太平洋城附近的小内斯图卡河的巨石中的沙袋中发现并研究了 15 个标本。Redudasys neotemperatus n. sp. 在形态和基因上可与 Redudasys fornerise Kisielewski, 1987a 区分开来，后者是迄今为止该属中唯一正式描述的物种，并且在形态上可与 Garraffoni 等人报道的未命名形式“Redudasys sp.”区分开来。2010年没有遗传信息。