Family Hydropsychidae Curtis

Author: Takao NOZAKI
E-mail: takao.nozaki[AT]nifty.com
Last updated: 4 October 2026

Subfamily Arctopsychinae Martynov

Genus Arctopsyche McLachlan

Four unnamed 'species' accompanied with an alphabetic code were described based only on the larval stage, but their specific status have not yet been solved. Arctopsyche hirayamai described by Matsumura (1931) was transferred to the genus Plectrocnemia (Polycentropodidae) by Ohkawa and Ito (2007).

Arctopsyche amurensis Martynov 1934

Distribution. Japan (Hokkaido), Russia.

Arctopsyche spinifera Ulmer 1907

Distribution. Japan (Honshu).

Arctopsyche sp. AA: Tanida 1985

Arctopsyche sp. A: Tsuda 1937

Distribution. Japan (Honshu).

Arctopsyche sp. AD: Tanida 1985

Arctopsyche sp. D: Akagi 1956a

Distribution. Japan (Honshu).

Arctopsyche sp. AE: Tanida 1985

Arctopsyche sp. E: Tani 1967

Distribution. Japan (Hokkaido).

Arctopsyche sp. C: Akagi 1956a

Distribution. Japan (Honshu).

Genus Parapsyche Betten

Parapsyche aureocephala Schmid 1964

Distribution. Japan (Honshu).

Parapsyche kurosawai (Kobayashi 1956)

Arctopsyche kurosawai Kobayashi 1956

Distribution. Japan (Honshu, Sado).

Parapsyche maculata (Ulmer 1907)

Arctopsyche maculata Ulmer 1907a

Parapsyche nigrocephala Schmid 1964

Distribution. Japan (Honshu, Shikoku, Kyushu).

Parapsyche shikotsuensis (Iwata 1927)

Diplectrona shikotsuensis Iwata 1927a

Parapsyche sp. PC: Tanida, 1985

Distribution. Japan (Hokkaido).

Parapsyche sp. PB

Diplectrona felix non McLachlan 1878: Iwata 1927a

Arctopsyche sp. B: Tsuda 1937

Distribution. Japan (Honshu).

Parapsyche sp. (maculata species complex)

Distribution. Japan (Honshu, Shikoku, Kyushu).

Subfamily Diplectroninae Ulmer

Genus Diplectrona Westwood

Diplectrona albomarginata Ulmer 1907 and Diplectrona tohokuensius Kobayashi 1973 were transferred to the genus Homoplectra (Nozaki 2019, 2021). Diplectrona japonica (Banks, 1906), originally described as a member of the genus Arctopsyche, was also transferred to the genus Homoplectra (Nozaki 2021).

Diplectrona aiensis Kobayashi 1987

Distribution. Japan (Honshu, Kyushu).

Diplectrona albofasciata (Ulmer 1913)

Distribution. Japan (Ishigaki-jima, Yonaguni-jima), Taiwan.

Diplectrona burha Schmid 1961

Distribution. Japan (Shikoku, Amami-o-shima, Okinawa-jima, Ishigaki-jima, Iriomote-jima), China (Hubei), Taiwan, Pakistan, India, Nepal, Thailand, Vietnam.

Diplectrona kibuneana Tsuda 1940

Diplectrona sp. DB: Akagi 1956b

Hydropsyche difficultata Kobayashi 1984a

Diplectrona difficultata: Nozaki 1997a

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Tsushima, Koshiki-jima, Yaku-shima), Korea.

Diplectrona takaii Nozaki 2021

Diplectrona sp. DC: Akagi 1956b

Distribution. Japan (Honshu, Shikoku).

Diplectrona uken Ito and Nozaki 2018

Distribution. Japan (Amami-o-shima, Ishigaki-jima).

Diplectrona sp. DA: Akagi 1956b

Distribution. Japan (Honshu).

Diplectrona species indeterminate

Genus Homoplectra Ross

Homoplectra albomarginata (Ulmer 1907)

Diplectrona albomarginata Ulmer 1907a, 74, female, Japan

Distribution. Japan (Honshu).

Homoplectra bicornis Nozaki 2025

Distribution. Japan (central Honshu).

Homoplectra crassa Nozaki 2019

Distribution. Japan (central Honshu).

Homoplectra crassicornea Nozaki and Ito 2018 (in Ito and Nozaki 2018)

Distribution. Japan (Yaku-shima).

Homoplectra flagelliformis Nozaki 2025

Distribution. Japan (western Honshu).

Homoplectra gracilis Nozaki 2019

Distribution. Japan (western Honshu).

Homoplectra hattorii Nozaki 2019

Distribution. Japan (Hokkaido).

Homoplectra inazui Nozaki 2025

Distribution. Japan (central Honshu).

Homoplectra ise Nozaki 2019

Distribution. Japan (Honshu (central), Shikoku).

Homoplectra japonica (Banks, 1906)

Arctopsyche japonica Banks 1906

Diplectrona japonica: Ulmer 1907a

Distribution. Japan (westernmost Honshu, Kyushu).

Homoplectra kimi Nozaki 2025

Arctopsyche sp. AB: Kim 1974

Distribution. Japan (central Honshu).

Homoplectra occidens Nozaki 2019

Distribution. Japan (central to western).

Homoplectra shikoku Nozaki 2025

Distribution. Shikoku (Tokushima, Ehime, Kochi).

Homoplectra tohokuensis (Kobayashi 1973)

Diplectrona tohokuensis Kobayashi, 1973

Distribution. Japan (North east Honshu).

Homoplectra trifurcata Nozaki and Ito 2018 (in Ito and Nozaki 2018)

Distribution. Japan (Amami-o-shima).

Homoplectra sp. (japonica species group)

Distribution. Japan (Honshu).

Subfamily Hydropsychinae Curtis

Genus Cheumatopsyche Wallengren

Tanida (1997a, 2003) recorded two possibly undescribed species based on adults from the Ryukyu Islands, but any descriptions were not provided.

Cheumatopsyche aira Ito and Nozaki 2018

Distribution. Japan (Iriomote-jima).

Cheumatopsyche addita (Navás 1916)

Hydropsychodes addita Navás 1916

Distribution. Japan.

Cheumatopsyche brevilineata (Iwata 1927)

Hydropsyche brevilineata Iwata 1927a

Hydropsychodes brevilineata: Tsuda 1940

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Oki), Russia (Far East).

Cheumatopsyche clavalis Martynov 1930

Cheumatopsyche uchidai Kobayashi 1987

Distribution. Japan (Ishigaki-jima, Iriomote-jima), Taiwan.

Cheumatopsyche galloisi (Matsumura 1931)

Hydromanicus galloisi Matsumura 1931

Hydropsychodes sp. HA: Chino 1975

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Oki).

Cheumatopsyche guerneana (Navás 1916)

Hydropsychodes guerneana Navás 1916

Distribution. Japan (Honshu).

Cheumatopsyche infascia Martynov, 1934

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Koshiki-jima, Tanega-shima), Korea, Russia (Far East).

Cheumatopsyche japonica (Navás 1916)

Hydropsychodes japonica Navás 1916

Distribution. Japan (Honshu).

Cheumatopsyche okinawana Oláh & Johanson 2008

Distribution. Japan (Amami-o-shima, Okinawa-jima, Kume-jima).

Cheumatopsyche tanidai Oláh & Johanson 2008

Distribution. Japan (Honshu, Kyushu), Korea.

Cheumatopsyche tokunagai (Tsuda 1940)

Hydropsychodes tokunagai Tsuda 1940

Cheumatopsyche davisi Oláh and Johanson 2008

Distribution. Japan (Tsushima), Taiwan.

Cheumatopsyche species indeterminate

Genus Hydromanicus Brauer

Tanida (1997a, 2003) recorded this genus from Okinawa-jima and Yaeyama islands by examnation of the male genitalic morphology in mature pupae. Although he recognized two species in the Ryukyus, precise information about them has not yet been provided. Ito and Nozaki (2018) did not report this genus in their revisional study of the family Hydropsychidae of the Ryukyu Archipelago.

Genus Hydropsyche Pictet

Hydropsyche albicephala Tanida 1986

Hydropsyche sp. HC: Tsuda and Akagi 1974

Distribution. Japan (Hokakido, Honshu, Shikoku, Kyushu, Koshiki-jima).

Hydropsyche ancorapunctata Tanida 1986

Hydropsche sp. HA: Akagi 1955

Distribution. Japan (Honshu).

Hydropsyche buyssoni Ulmer 1907

Distribution. Japan (Honshu).

Hydropsyche dilatata Tanida 1986

Distribution. Japan (Honshu (central to western), Shikoku, Kyushu).

Hydropsyche gifuana Ulmer 1907

Hydropsyche drouardi Navás 1933, 96

Distribution. Japan (Honshu, Shikoku, Kyushu).

Hydropsyche isip Arefina, Minakawa & Nozaki 2004

Distribution. Japan (Hokkaido), Sakhalin.

Hydropsyche kozhantschikovi Martynov 1924

Hydropsyche kawamurai Tsuda 1940

Distribution. Japan (Hokkaido, Kyushu), Russia, Korea, China, Mongolia, Kazakhstan, Pakistan.

Hydropsyche newae Kolenati 1958

Hydropsyche sp. HB: Akagi 1962

Distribution. Japan (Hokkaido), Russia, Korea, China, Europe.

Hydropsyche orbiculata Ulmer 1911

Hydropsyche sp. HD: Tanida 1985

Hydropsyche yaeyamensis Tanida 1986a

Distribution. Japan (Ishigaki-jima, Iriomote-jima), Taiwan.

Hydropsyche orientalis Martynov 1934

Hydropsyche ulmeri Tsuda 1940

Hydropsyche tsudai Tani 1977

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyusyu, Sado, Kouzu Is., Mikura Is., Hachijo Is., Oki (Dogo), Koshiki-jima, Amami-oshima, Okinawa-jima, Kume-jima), Russia, Korea, China.

Hydropsyche selysi Ulmer 1907

Hydropsyche ciliosa Navás 1933

Distribution. Japan (Honshu).

Hydropsyche setensis Iwata 1927

Hydropsyche nakaharai Tsuda 1949

Hydropsyche japonica Iwata 1927a

Distribution. Japan (Hokkaido?, Honshu, Shikoku, Kyushu, Sado).

Hydropsyche verrucosa (Ulmer 1911)

Hydromanicus verrucosus Ulmer 1911

Hydatomanicus verrucosus: Ulmer, 1951

Distribution. Japan (Amami-o-shima, Okinawa-jima, Ishigaki-jima, Iriomote-jima), Taiwan.