Family Rhyacophilidae Stephens
Authors: Akikazu TAIRA*, Naoki KAWASE and Takao NOZAKI
*: Correspondence. E-mail: akikazu.taira[AT]gmail.com
Last updated: 11 October 2026
Genus Himalopsyche Banks
Himalopsyche japonica Morton 1900
Rhyacophila japonica Morton 1900
Himalopsyche japonica: Ross 1956
Distribution. Japan (Honshu, Shikoku).
Genus Rhyacophila Pictet 1834
Seventy-eight species have been known from Japan. However, some unknown species were recorded from northern Honshu with photographs of each male genitalia (e.g. Inazu and Nishida 2011; Tanaka 2012a, 2022). Furthermore, 11 'species' separated only by larval characters have not yet been associated with their adults.
Rhyacophila angulicauda Kawase 2024
Distribution. Japan (Honshu).
Distribution. Japan (Yaku-shima).
Rhyacophila arefini Lukyanchenko 1993
Distribution. Japan (Hokkaido, Rishiri-to), Kunashir, Shikotan.
Rhyacophila articulata Morton 1900
Distribution. Japan (Honshu, Kyushu).
Rhyacophila azumaensis Kobayashi 1973
Rhyacophila asahiensis Kobayashi 1976
Rhyacophila hayachinensis Kobayashi 1976
Distribution. Japan (Honshu).
Rhaycophila bifue Ito and Kuhara 2024
Distribution. Japan (Hokkaido).
Rhaycophila bilobata Ulmer 1907
Distribution. Japan (Honshu).
Rhyacophila brevicephala Iwata 1927
Rhyacophila lacrimae Tsuda 1940
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Okino-shima, Goto-retto, Yaku-shima), Kuriles.
Rhycophila clara Hattori and Ohkawa 2007
Distribution. Japan (Hokkaido).
Rhyacophila clemens Tsuda 1940
Distribution. Japan (Hokkaido, Honshu, Shikoku?, Kyushu?, Okino-shima?, Iriomote Island?), Taiwan?.
Rhyacophila coclearis Hsu and Chen 1996
Distribution. Japan (Okinawa Island), Taiwan.
Rhyacophila crassa Schmid 1970
Distribution. Japan (Honshu).
Rhyacophila curtior Schmid 1970
Distribution. Japan (Honshu).
Rhyacophila diffidens Tsuda 1940
Rhyacophila tsudai Ross 1956
Distribution. Japan (Honshu, Kyushu).
Rhyacophila eniwa Ito and Kuhara 2024
Distribution. Japan (Hokkaido).
Rhyacophila flinti Schmid 1970
Distribution. Japan (Kyushu).
Rhyacophila formosana Ulmer 1927
Distribution. Japan (Iriomote Island), Taiwan.
Rhyacophila furcicauda Kawase 2024
Distribution. Japan (Honshu).
Rhyacophila geranos Kawase 2025
Distribution. Japan (Shikoku).
Rhyacophila hamata Hattori and Ohkawa 2007
Distribution. Japan (Hokkaido).
Rhyacophila hattorii Torii 2021
Rhyacophila yukii non Tsuda 1940: Schmid 1970
Rhyacophila sp. (yukii sensu Schmid 1970): Hattori 2005
Distribution. Japan (Honshu).
Rhyacophila hayakawai Kobayashi 1969
Distribution. Japan (Honshu).
Rhyacophila hokkaidensis Iwata 1927
Rhyacophila tenninkyoensis Kobayashi 1964
Rhyacophila sakhalinica Schmid 1970
Distribution. Japan (Hokkaido, Rishiri-to), Sakhalin, Kuriles (Itrup, Shikotan, Kunashir).
Rhyacophila humerigera Kawase 2025
Distribution. Japan (Honshu).
Rhyacophila impar Martynov 1914
Rhyacophila tacita Tsuda 1940
Rhyacophila sp. RG: Tsuda 1948
Distribution. Japan (Honshu), Russia, Korea.
Rhyacophila imakane Ito and Kuhara 2024
Distribution. Japan (Hokkaido).
Rhyacophila inazui Kawase 2024
Distribution. Japan (Honshu, Shikoku).
Rhyacophila ishihanaensis Kobayashi 1984
Distribution. Japan (Sadoga-shima).
Rhyacophila itoi Tsuda and Kawai 1967
Distribution. Japan (Honshu).
Rhyacophila kardakoffi Navás 1926
Distribution. Japan (Hokkaido), Russia.
Rhyacophila kawamurae Tsuda 1940
Rhyacophila sp. RJ: Kim 1974
Rhyacophila manuleata: Malicky, 2014
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Goto-retto, Amami Island, Okinawa Island), Korea.
Rhyacophila kawaraboensis Kobayashi 1976
Distribution. Japan (Honshu).
Rhyacophila kisoensis Tsuda 1940
Rhyacophila sp. RI: Tsuda 1948
Distribution. Japan (Honshu, Shikoku).
Rhyacophila kiyosumiensis Kuranishi 1990
Distribution. Japan (Honshu).
Rhyacophila kobayashii Torii 2021
Rhyacophila kisoensis non Tsuda 1940: Kobayashi 1971b
Distribution. Japan (Honshu).
Distribution. Japan (Honshu, Okino-shima).
Rhyacophila koryne Kawase 2025
Distribution. Japan (Honshu).
Rhyacophila kuramana Tsuda 1942
Distribution. Japan (Honshu, Shikoku, Kyushu).
Rhyacophila kuranishii Torii 2021
Distribution. Japan (Shikoku).
Rhyacophila kuwayamai Schmid 1970
Rhyacophila sp. RF: Tsuda 1948
Distribution. Japan (Hokkaido, Honshu, Tsushima).
Rhyacophila lambakanta Schmid 1970
Rhyacophila imagamiensis Kobayashi 1973
Distribution. Japan (Honshu, Sadoga-shima).
Rhyacophila articulata non Morton 1900: Tsuda 1948
Rhyacophila morokuboensis Kobayashi 1971
Rhyacophila towadensis non Iwata 1927: Tanaka 2010b
Distribution. Japan (Honshu, Shikoku, Kyushu).
Rhyacophila makiensis Kobayashi 1987
Distribution. Japan (Honshu).
Rhyacophila mayaensis Kobayashi 1973
Distribution. Japan (Honshu).
Rhyacophila minoyamaensis Kobayashi 1973
Distribution. Japan (Honshu).
Rhyacophila mirabilis Levanidova and Schmid 1977
Distribution. Japan (Hokkaido, Rishiri-to), Kuriles (Kunashir, Iturup).
Rhyacophila misago Ito and Kuhara 2024
Distribution. Japan (Hokkaido).
Rhyacophila miyanoura Ito 2021
Distribution. Japan (Yaku-shima).
Rhyacophila motakanta Schmid 1970
Distribution. Japan (Honshu, Shikoku, Kyushu).
Rhyacophila nagaokaensis Kobayashi 1976
Distribution. Japan (Honshu).
Distribution. Japan (Yaku-shima).
Rhyacophila nakagawai Kobayashi 1969
Distribution. Japan (Honshu).
Rhyacophila nigrocephala Iwata 1927
Rhyacophila modesta Tsuda 1940
Distribution. Japan (Honshu, Shikoku, Kyushu, Okino-shima, Yakushima).
Rhyacophila niizakiensis Kobayashi 1976
Distribution. Japan (Honshu).
Rhyacophila nipponica Navás 1933
Distribution. Japan (Hokkaido, Honshu, Sado, Okino-shima, Tsushima), Shikotan.
Distribution. Japan (Honshu).
Rhyacophila orthacantha Emoto 1979
Distribution. Japan (Honshu).
Distribution. Japan (Honshu).
Rhyacophila parvicauda Kawase 2024
Distribution. Japan (Shikoku).
Rhyacophila retracta Martynov 1914
Rhyacophila uenoi Tsuda 1940
Distribution. Japan (Hokkaido, Tsushima), Russia, Korea.
Rhyacophila satoi Kuranishi 1997
Distribution. Japan (Amami Island, Okinawa Island).
Rhyacophila shekigawana Kobayashi 1973
Distribution. Japan (Honshu).
Rhyacophila shikotsuensis Iwata 1927
Rhyacophila sp. RE: Tsuda 1948
Rhyacophila remingtoni Ross, 1956
Rhyacopjila similis Kobayashi 1959
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Mikura Island, Okinawa Island), Taiwan.
Rhyacophila shimamaki Ito and Kuhara 2024
Distribution. Japan (Hokkaido).
Rhyacophila shiraishiensis Kobayashi 1971
Distribution. Japan (Honshu).
Rhyacophila tachikawana Kobayashi 1973
Distribution. Japan (Honshu).
Rhyacophila towadensis Iwata 1927
Rhyacophila vaoides Ross 1956
Distribution. Japan (Hokkaido, Honshu).
Rhyacophila transquilla Tsuda 1940
Distribution. Japan (Hokkaido, Honshu, Shikoku, Okino-shima), Russia.
Rhyacophila tsusimaensis Kobayashi 1985
Distribution. Japan (Tsushima).
Distribution. Japan (Honshu), China.
Rhyacophila verecunda Tsuda 1940
Distribution. Japan (Honshu).
Rhyacophila vesperalis Kawase 2024
Rhyacophila clemens non Tsuda 1940: Kobayashi 1959
Distribution. Japan (western Honshu, Shikoku, Kyushu).
Rhyacophila yakushima Ito 2021
Distribution. Japan (Yaku-shima).
Rhyacophila yamamotoi Nozaki 2021
Distribution. Japan (Honshu, Shikoku).
Rhyacophila yamanakensis Iwata 1927
Rhyacophila quieta Tsuda 1940
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Okino-shima).
Rhyacophila yoshinensis Tsuda and Kawai 1967
Distribution. Japan (Honshu, Shikoku).
Rhyacophila yosiiana Tsuda 1940
Rhyacophila tristis: Iwata 1927a
Rhyacophila sp. RD: Tsuda 1948
Distribution. Japan (Honshu, Kyushu).
Distribution. Japan (Honshu).
Rhyacophila species indeterminate