Kawase Naoki
Minakuchi Kodomo-no-mori Nature Center; 10; Kita-naiki; Minakuchi-cho; Koka-shi; Shiga; 528-0051 Japan.
Zootaxa. 2024 May 3;5447(1):55-76. doi: 10.11646/zootaxa.5447.1.3.
Japanese species of the Rhyacophila clemens Species Group Ross 1956 are revised, and six species including five new allied species are recognized: R. clemens Tsuda 1940, R. vesperalis sp. nov., R. inazui sp. nov., R. angulicauda sp. nov., R. parvicauda sp. nov., and R. furcicauda sp. nov. Adult males and females of all species are described or redescribed, and the male genitalia of a Korean species, R. kumgangsanica Kumanski 1990, also belonging to this species group, are illustrated for comparison. The lectotype of R. clemens is designated for nomenclatural stability. The main diagnostic characters for the R. clemens Species Group are provided as follows: (1) Segment X bears an apical hinged process posteroventrally; (2) two pairs of anal sclerites have a common internal root; (3) a pair of large apical bands surrounds the anus and the root of the anal sclerites; (4) the aedeagus bears a large sclerotized ventral plate.
对日本的克莱门斯石蚕蛾物种组（Ross，1956）进行了修订，共确认了6个物种，其中包括5个新的近缘物种：1940年的津田石蚕蛾、夜石蚕蛾新种、稻井石蚕蛾新种、角尾石蚕蛾新种、小尾石蚕蛾新种和叉尾石蚕蛾新种。描述或重新描述了所有物种的成年雄性和雌性，并展示了同样属于该物种组的1990年库曼斯基描述的朝鲜金刚山石蚕蛾的雄性生殖器，以供比较。指定了克莱门斯石蚕蛾的选模标本，以确保命名的稳定性。克莱门斯石蚕蛾物种组的主要鉴别特征如下：（1）第X节在腹面后缘有一个顶端铰接的突起；（2）两对肛板有一个共同的内根；（3）一对大的顶端带环绕肛门和肛板的根部；（4）阳茎有一个大的硬化腹板。
