Species of the Asian genus Eotrechus Kirkaldy, 1902 (Hemiptera, Heteroptera, Gerromorpha, Gerridae, Eotrechinae) are atypical water striders because they live on the near-vertical rock surfaces of waterfalls. The taxonomy of the genus is revised and six new species are described: E. steinerisp. nov., E. kerberossp. nov., E. thaisp. nov., E. konkakinhsp. nov., E. boukalisp. nov., and E. andersenisp. nov. Supplementary descriptions of the apterous female and macropterous male of E. fuscus Basu, Chandra & Venkatesan, 2017 are provided. Additional and updated distribution data of species of Eotrechus are reported. Eotrechus fuscus is reported from Myanmar for the first time; E. brevipes is reported from Nepal for the first time; E. hygropetricus Andersen, 1982 is reported from southern Thailand for the first time, which extends the southernmost limit of the known distribution of the genus. A revised key to the species of Eotrechus is also provided.

中文翻译：

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对 Eotrechus Kirkaldy 属（半翅目、异翅目、Gerridae）的修订，以及六个新种的描述

 亚洲属 Eotrechus Kirkaldy，1902 年的物种（半翅目、异翅目、Gerromorpha、Gerridae、Eotrechinae）是非典型的水黾，因为它们生活在瀑布近乎垂直的岩石表面。对该属的分类进行了修订，并描述了六个新种：E. steinerisp。十一月，E. kerberossp。十一月，E. thaisp。11 月，E. konkakinhsp。十一月，E. boukalisp。十一月，和 E. andersenisp。十一月 提供了 E. fuscus Basu, Chandra & Venkatesan, 2017 的无翅雌性和大翅雄性的补充描述。报告了 Eotrechus 物种的附加和更新分布数据。Eotrechus fuscus为缅甸首次报道；E. brevipes为尼泊尔首次报道；E. hygropetricus Andersen，1982年首次在泰国南部报道，它延伸了该属已知分布的最南端。还提供了 Eotrechus 物种的修订密钥。