3-16-15, Midorigaoka, Ninomiya-machi, Naka-gun, Kanagawa, 259-0132 Japan. .
Department of Life Science, Kyonggi University, Suwon 16227, Korea. .
Zootaxa. 2021 Nov 9;5067(1):97-105. doi: 10.11646/zootaxa.5067.1.5.
Two new species of the genus Rhyacophila Pictet, R. kangae Park Nozaki sp. nov. and R. yamamotoi Nozaki sp. nov., are described from Korea and Japan, respectively. Both species belong to the Rhyacophila nigrocephala Species Group, and their genitalic morphology is very similar to those of R. confissa Botosaneanu 1970 and R. vicina Botosaneanu 1970 described from the Korean Peninsula. These four species can be distinguished from each other by the shape of the complex of preanal appendages and apicodorsal lobe of segment IX in males, and by the shape of the vaginal apparatus in females. Males of the two new species bear larger compound eyes in proportion to the head widths than those of R. confissa and R. vicina.
本文描述了分别来自韩国和日本的两个新种，即 Rhyacophila 属的 Kangae 种和 Yamamotoi 种。这两个物种都属于 Rhyacophila nigrocephala 种组，其生殖器形态与描述自朝鲜半岛的 R. confissa Botosaneanu 1970 和 R. vicina Botosaneanu 1970 非常相似。这四个物种可以通过雄性第九节的肛前附器复合体和背侧叶的形状以及雌性阴道器的形状来区分。与 R. confissa 和 R. vicina 相比，这两个新种的雄性具有更大的复眼，相对于头部宽度而言。
