Family Brachycentridae Ulmer
Author: Takao NOZAKI
E-mail: takao.nozaki[AT]nifty.com
Last updated: 11 October 2026
Genus Brachycentrus Curtis
Brachycentrus americanus (Banks 1899)
Oligoplectrum americanum Banks 1899
Oligoplectrodes potanini Martynov 1910
Distribution. Japan (Hokkaido), Sakhalin, Kurile, Russia (Siberia, Primorye, ), North America, Mongolia.
Brachycentrus japonicus (Iwata 1927)
Brachycentriella japonica Iwata 1927a
Brachycentrus bilobatus Martynov 1935
Brachycentrus sp. BC: Akagi 1962a
Distribution. Japan (Honshu), Russia (Primorye), North Korea, Mongolia.
Brachycentrus kuwayamai Wiggins, Tani and Tanida 1985
Brachycentrus subnubilus non Curtis 1834: Iwata 1927a
Brachycentrus sp. BA: Akagi 1957
Distribution. Japan (Hokkaido, Honshu).
Genus Dolichocentrus Martynov
Dolichocentrus sakura Nozaki 2017
Distribution. Japan (Honshu). Only known from the Asahi-gawa River in Okayama Prefecture.
Genus Eobrachycentrus Wiggins
Eobrachycentrus niigatai (Kobayashi 1968)
Brachycentrus niigatai Kobayashi 1968, 7, pl. 3, male, Honshu (Niigata).
Eobrachycentrus propinquus Wiggins, Tani and Tanida 1985
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu).
Eobrachycentrus vernalis (Banks 1906)
Brachycentrus vernalis Banks 1906
Micrasema oharensis Iwata 1927c
Brachycentrus sp. BB: Akagi 1959
Micrasema oharense: Fischer 1970, 144.
Eobrachycentrus oharensis: Wiggins et al. 1985, 67, Honshu (Kyoto).
Distribution. Japan (Honshu, Shikoku, Kyushu).
Genus Micrasema McLachlan
Micrasema akagiae Nozaki and Tanida 2007
Micrasema sp. MB: Akagi, 1959, 42-43, larva, male, Honshu (Aichi, Kyoto, Nara).
Distribution. Japan (Honshu).
Micrasema gelidum McLachlan 1876
Distribution. Japan (Hokkaido), Holarctic (Boreal and Arctic).
Micrasema hanasense Tsuda 1942
Micrasema sp. MA: Akagi 1957
Micrasema hakonense Kobayashi 1969
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Rishiri, Tsushima, Yonaguni-jima), Kuriles, Korea, Taiwan.
Micrasema quadriloba Martynov 1933
Distribution. Japan (Honshu).
Micrasema spinosum Nozaki and Tanida 2007
Distribution. Japan (Hokkaido, Honshu, Shikoku).
Micrasema sp. MC: Akagi 1962b
Micrasema genijiroense Kobayashi 1971a
Distribution. Japan (Honshu, Shikoku).
Micrasema species indeterminate
Micrasema minimum: Iwata 1927a
Lasiocephala basalis Kolenati: Iwata 1927a
Genus Tsudaea Nozaki 2009
Nozaki (2009) erected this genus for Brachycentrus kitayamanus Tsuda 1942.
Tsudaea kitayamana (Tsuda 1942)
Brachycentrus kitayamanus Tsuda 1942
Micrasema sp. MD: Akagi, 1962b
Eobrachycentrus kitayamanus: Wiggins et al. 1985
Distribution. Japan (Honshu).