A catalogue of Japanese Trichoptera
Family Polycentropodidae Stephens


Author: Tomiko ITO, Ayuko OHKAWA and Shu INABA*
*: Correspondence. E-mail: inabashu3[AT]yahoo.co.jp
Last updated: 4 Dec. 2016


Six named genera belonging to this family have been recorded from Japan. A species probably belonging to the genus Polycentropus Curtis was also recorded from Japan (Tanida 1997b), but its generic status is not clear. A species recorded as Polycentropodidae gen. sp. by Morita (1999a) was described as Eoneureclipsis montanus, a member of the family Psychomyiidae, by Torii and Nishimoto (2011).

Genus Cyrnus Stephens

Two species belonging to this genus have been recorded from Japan.

Cyrnus fennicus Klingstedt 1937

Cyrnus fennicus Klingstedt 1937, 575, 581-582, 587-591, 593, 595, 597, male, female, Finland.
Fischer 1962, 128.
Ito et al. 1999, 18, 23, 26-27, Hokkaido (Kushiro).
Ohkawa and Ito 1999, 313-314, 320, male, Hokkaido (Kushiro).
Tanida 2005, 473, 476, male.
Ito et al. 2010, 51, 59, fig. 5, female, Hokkaido (Kushiro).
Ito 2013, 55, 82, Hokkaido (Kushiro).
Tanida 2016, 90.
Type locality. Finland.
Distribution. Japan (Hokkaido (east)), Finland, Russia (Siberia, Primorye).

Cyrnus nipponicus Tsuda 1942

Cyrnus nipponicus Tsuda 1942a, 262-263, male, Honshu (Kyoto).
Fischer 1972, 50.
Ito et al. 1999, 18, 23, 26, Hokkaido (Kushiro).
Morita 1999b, 89, Honshu (Mie).
Ohkawa and Ito 1999, 314-315, 321, 323, male, Hokkaido (Kushiro, Tokachi, Soya, Oshima), Honshu (Nagano, Gumma).
Ito et al. 2000a, 26, 31, Hokkaido (Soya).
Ito et al. 2000b, 22, Hokkaido (Ishikari).
Nishimoto and Morita 2001, 76, Honshu (Aichi).
Nozaki and Nakamura 2002, 172, Honshu (Hiroshima).
Nakamura et al. 2003, 153-154, Honshu (Hiroshima).
Kawase et al. 2004, 111, Honshu (Ibaraki).
Nagayasu et al. 2005, 52, Hokkaido (Ishikari).
Tanida 2005, 473, 476, male.
Morita 2008a, 5, Honshu (Mie).
Katsuma 2010, 85, Honshu (Ibaraki).
Mano 2010, 21, 23, Honshu (Aichi).
Nakamura and Kita 2010, 88, Honshu (Hiroshima).
Kawase and Morita 2010, 40, Honshu (Mie, Shiga).
Ito et al. 2010, 51, 59-60, 75, 83, fig. 4, female, Hokkaido (Oshima).
Inazu and Nishida 2011, 188, male, Honshu (Hyogo).
Morita 2011, 215, Honshu (Mie).
Inazu 2012, 7, Honshu (Hyogo).
Ito 2013, 55, 82, Hokkaido (Kushiro).
Inazu 2013a, 56, Honshu (Hyogo).
Kawase and Morita 2014, 5, Honshu (Shiga).
Ito and Kuhara 2016, 16, Hokkaido (Okhotsk).
Nozaki 2016, 341, 434, wing venation.
Tanida 2016, 90.
Type locality. Honshu (Kyoto), Japan.
Distribution. Japan (Hokkaido, Honshu).

Genus Holocentropus Mclachlan

One species belonging to this genus has been recorded from Japan.

Holocentropus omiensis Iwata, 1927

Holocentropus omiensis Iwata 1927, 208-209, 224-225, larva, Honshu (Shiga).
Tsuda 1942b, 40, 48.
Tsuda 1951, 52, larva.
Fischer 1962, 106.
Fischer 1972, 42.
Tanida 2016, 90.
Type locality. Honshu (Shiga), Japan.
Distribution. Japan (Honshu (central)).

Genus Neureclipsis McLachlan

Inaba et al. (2014) decided that the genus Neucentropus Martynov is a synonym of this genus based on examination of adult and larval stages. One species belonging to this genus has been recorded from Japan.

Neueclipsis mandjurica (Martynov 1907)
 
Neucentropus mandjuricus Martynov 1907, 18-19, female (left wings).
Li et al. 1998, 665-670, male, female.
Tanida et al. 1999, 393.
Mey and Nozaki 2006, 24, Honshu (Shiga).
Oláh and Johanson 2010, 9-10.
Neureclipsis kyotoensis Iwata 1927a, 232, 264, 266-267, pl. 5, 8, larva, Honshu (Kyoto). Synonymized by Inaba et al. (2014).
Iwata 1927b, 208, 220-221, 226-227, larva.
Fischer 1962, 35.
Fischer 1972, 15.
Tsuda 1942b, 40, 48.
Tanida 2005, 474.
Kyopsyche japonica Tsuda 1942a, 263-265, male, Honshu (Shiga, Kyoto). Synonymized by Arefina (1997), Tanida et al. (1999) and Inaba et al. (2014).
Mori and Matsutani 1953, 192-198, swarming of adults, Honshu (Shiga).
Fischer 1972, 53.
Neureclipsis mongolica Schumid 1968, 10-11, male. Synonymized by Arefina (1997) and Li et al. (1998).
Neureclipsis mandjurica: Arefina 1997, 72-73, male, combination (mandjuricus).
Tanida 2005, 474, 477, male(mandjuricus).
Inaba et al. 2014, 63-69, male female, pupa, larva.
Nozaki 2016, 341, 434, wing venation.
Tanida 2016, 90.
Neucentropus japonicus: Li et al. 1998, 665-666, 668-671, male, combination.
Type locality. Manchuria, China.
Distribution. Japan (Honshu (central)), China, Russia, Mongolia, Vietnam.
Remarks. Inaba et al. (2014) examined the type series specimens of Neureclipsis kyotoensis and Kyopsyche japonica, and recognized that these species are synonyms of Neureclipsis mandjurica.

Genus Nyctiophylax Brauer

Four named species belonging to this genus have been recorded from Japan. The genus Paranyctiophylax was established with the type species P. kisoensis by Tsuda (1942a). Although Neboiss (1993) recognized it as a distinct genus based on character of looped anal vein in forewings, Malicky (1994) treated it as a subgenus of this genus. Tanida (1997b) recorded an unnamed species probably belonging to this genus from Okinawa-jima, but the specific and generic status of this species has not yet been clear.

Nyctiophylax asuanus (Kobayashi 1985)

Plectrocnemia asuana Kobayashi 1985, 11, male, Tsushima.
Nyctiophylax asuanus: Ohkawa and Ito 2007, 209, combination (asuana).
Tanida 2016, 90.
Type locality. Tsushima, Japan
Distribution. Japan (Tsushima).

Nyctiophylax kadowakii (Kobayashi 1987)

Plectrocnemia kadowakii Kobayashi 1987, 16-17, 31, male, Honshu (Shimane).
Nyctiophylax kadowakii: Ohkawa and Ito 2007, 209; combination.
Tanida 2016, 90.
Type locality. Honshu (Shimane), Japan
Distribution. Japan (Honshu (west)).

Nyctiophylax kisoensis (Tsuda 1942)

Paranyctiophylax kisoensis Tsuda 1942a, 265-266, male, Honshu (Nagano).
Kobayashi 1971, 28-29, pl. 17, male, Honshu (Kanagawa).
Ohtsuka and Tanida 1986, 4, Kyushu (Kumamoto).
Nozaki 1988, 39, Honshu (Kanagawa).
Kugo and Nozaki 1990, 61, Honshu (Hyogo).
Moriya, 1994, 30, 33, 70, Honshu (Kanagawa, Yamanashi).
Ito et al. 1997, 23, 27, Hokkaido (Oshima).
Moriya1997, 61, Honshu (Kanagawa, Yamanashi).
Nozaki 1997, 35, Honshu (Kanagawa).
Kagaya et al. 1998, 26, 52, 159, Honshu (Tokyo, Yamanashi).
Ohkawa and Ito 1999, 315, 322, male, Hokkaido (Sorachi, Ishikari, Oshima), Honshu (Iwate, Niigata, Nagano, Shizuoka), Kyushu (Kumamoto), Yakushima.
Morita 2000, 60, Honshu (Mie).
Kuhara 2001, 15, Hokkaido (Shiribeshi).
Nozaki and Nakamura 2002, 172, Honshu (Hiroshima).
Ishiwata et al. 2005, 110, 242, 244, Honshu (Kanagawa).
Katsuma 2005a, 6, Honshu (Ibaraki).
Katsuma 2005b, 13, Honshu (Gumma).
Tanida 2005, 474, 475-476, male, larva.
Torii and Hattori 2006, 37, Honshu (Shizuoka).
Kuhara et al. 2007, appendix 70, Hokkaido (Ishikari).
Morita 2008a, 5, Honshu (Mie).
Morita 2008b, 6-7, Honshu (Shiga).
Nyctiophylax kisoensis: Ohkawa and Ito 2007, 209.
Inazu 2008, 74, 91, 101, flight period, Honshu (Hyogo).
Kawase and Hayashi 2010, 85, Honshu (Shimane).
Kawase and Morita 2010, 40-41, Honshu (Mie, Shiga).
Ito et al. 2010, 59, 75, 83, Hokkaido (Hiyama, Oshima).
Inazu and Nishida 2011, 189, male, female, Honshu (Hyogo).
Kuhara 2011, 51, 56, 60, 71, flight season, Hokkaido (Ishikari).
Katsuma 2012, 65, Honshu (Ibaraki).
Moriya and Kubota 2012, 132, Honshu (Kanagawa).
Inazu 2008, 74, 91, 101, flight period, Honshu (Hyogo).
Aoyagi and Iwasaki 2009, 101, 104, 106, Honshu (Osaka).
Moriya 2009b, 139, Honshu (Mie).
Inazu 2013b, 72, Honshu (Hyogo).
Kawase and Morita 2014, 5, Honshu (Shiga).
Katsuma 2015, 90, Honshu (Fukushima).
Hayashi et al. 2015, 188, Oki (Dogo).
Nozaki 2016, 74, 341, 342, 434, 450, male, Shikoku (Kochi)..
Tanida 2016, 91.
Paranyctiophylax digitatus: Tanida and Takemon 1993, 242, 245, emergence period, Honshu (Kyoto). Treated as Paranyctiophylax kisoensis by Tanida (1997a).
Nyctiophylax sp. NA: Tanida 1985, 174-175, larva. Mentioned by Tanida (2005).
Type locality. Honshu (Nagano), Japan.
Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Yakushima).

Nyctiophylax makiensis (Kobayashi 1987)

Plectrocnemia makiensis Kobayashi 1987, 17, 32, male, Honshu (Shimane).
Nyctiophylax makiensis: Ohkawa and Ito 2007, 209, combination.
Tanida 2016, 91.
Type locality. Honshu (Shimane), Japan
Distribution. Japan (Honshu).

Genus Plectrocnemia Stephens

Seventeen named species belonging to this genus have been recorded from Japan.

Plectrocnemia chirotheca Nozaki 2016

Plectrocnemia chirotheca Nozaki et al. 2016, 327-328, male, female, Honshu (Ibaraki, Niigata).
Plectrocnemia norikurana Katsuma 2006, 36, 43, male, Honshu (Ibaraki). Misidentification mentioned by Katsuma (2011b) and Nozaki et al. (2016).
Plectrocnemia sp. aff. norikurana Katsuma 2011b, 67, Honshu (Ibaraki). Mentioned by Nozaki et al. (2016).
Tanida 2016, 93.
Plectrocnemia sp.: Katsuma 2012, 65, Honshu (Ibaraki).
Type locality. Honshu (Niigata), Japan.
Distribution. Japan (Honshu).
Remarks. Katsuma (2012) recorded a male as Plectrocnemia sp, which is the same species as Plectrocnemia sp. aff. norikurana recorded by Katsuma (2011b).

Plectrocnemia corna Ohkawa and Ito 2007

Plectrocnemia corna Ohkawa and Ito 2007, 184, 202-203, 207, male, Honshu (Kanagawa, Gifu, Shizuoka, Mie, Wakayama, Shimane), Shikoku (Kagawa), Kyushu (Miyazaki).
Katsuma 2015, 90-91, Honshu (Fukushima).
Tanida 2016, 91.
Plectrocnemia sp. 1: Moriya 1994, 30, 70, Honshu (Kanagawa). Mentioned by Ohkawa and Ito (2007).
Plectrocnemia sp.: Nozaki 1988, 39, Honshu (Kanagawa). Mentioned by Ohkawa and Ito (2007).
Morita 1996, 301-302, Honshu (Mie). Mentioned by Ohkawa and Ito (2007).
Nozaki and Nakamura, 2005, 221, Honshu (Shimane). Mentioned by Ohkawa and Ito (2007).
Moriya 2009a, 121, Honshu (Mie).
Moriya and Kubota 2012, 132, Honshu (Kanagawa).
Type locality. Honshu (Shizuoka), Japan.
Distribution. Japan (Honshu, Shikoku, Kyushu).

Plectrocnemia divisa Ohkawa and Ito 2007

Plectrocnemia divisa Ohkawa and Ito 2007, 199-200, 207, male, Hokkaido (Ishikari, Iburi), Honshu (Ibaraki, Gumma).
Katsuma 2012, 65, Honshu (Ibaraki).
Tanida 2016, 91.
Plectrocnemia sp. 3: Kuhara et al. 2000, 245, Hokkaido (Iburi). Mentioned by Ohkawa and Ito (2007).
Type locality. Hokkaido (Iburi), Japan.
Distribution. Japan (Hokkaido, Honshu (central)).

Plectrocnemia galloisi Navás 1933

Plectrocnemia galloisi Navás 1933, 95, female, Honshu (Tokyo).
Fischer 1962, 55.
Ohkawa and Ito 2007, 205.
Tanida 2016, 91.
Type locality. Honshu (Tokyo), Japan.
Distribution. Japan (Honshu).

Plectrocnemia hirayamai (Matsumura 1931)

Arctopsyhce hirayamai Matsumura 1931, 1131, male, Honshu (Nagano).
Plectrocnemia hirayamai: Ohkawa and Ito 2007, 193, 196-197, 207, male, Honshu (Niigata, Nagano, Hyogo), Shikoku (Ehime, Kochi); new combination.
Nozaki 2016, 74, 340, 342, 434, 450, male, Shikoku (Kochi)..
Tanida 2016, 91.
Type locality. Honshu (Nagano), Japan.
Distribution. Japan (Honshu (central), Shikoku).

Plectrocnemia levanidovae Vshivkova, Arefina and Morse 2003

Plectrocnemia levanidovae Arefina et al. 2003, 158-164, 166, male, female, Russia (South Kurils (Kunashir, Shikotan), Sakhalin).
Ohkawa and Ito 2007, 197-199, 208, male, Hokkaido (Nemuro, Tokachi, Kamikawa, Ishikari, Shiribeshi, Iburi), Honshu (Nagano, Aichi).
Nakatani et al. 2008, 53, Hokkaido (Soya).
Kawase and Morita 2010, 33, 41, Honshu (Shiga).
Kuhara 2011, 51, 71, flight season, Hokkaido (Sorachi).
Ito 2013, 55, 82, Hokkaido (Nemuro, Kushiro, Tokachi).
Nishimoto 2014, 65, Honshu (Aichi).
Ito and Kuhara 2016, 16, Hokkaido (Okhotsk).
Nakatani 2016, 240, Hokkaido (Nemuro).
Tanida 2016, 91.
Plectrocnemia sp. 1: Ito et al. 1998, 16, Hokkaido (Nemuro). Mentioned by Ohkawa and Ito (2007).
Ito et al. 2000b, 22, Hokkaido (Ishikari). Mentioned by Ohkawa and Ito (2007).
Nagayasu et al. 2003, 106, Hokkaido (Ishikari). Mentioned by Ohkawa and Ito (2007).
Nagayasu et al. 2005, 52, Hokkaido (Ishikari). Mentioned by Ohkawa and Ito (2007).
Type locality. Kurils (Kunashir), Russia.
Distribution. Japan (Hokkaido, Honshu (central)), South Kurils, Sakhalin.

Plectrocnemia nagayamai Schmid 1964

Plectrocnemia nagayamai Schmid 1964, 829, 831, male, Hokkaido (Kamikawa?).
Ito et al. 1997, 23, 27, 31, Hokkaido (Oshima).
Kuhara 1997, 59, Hokkaido (Shiribeshi).
Nakajima et al. 1997, 13, 18-19, Hokkaido (Oshima).
Ito et al. 1999, 23, 26, Hokkaido (Kushiro).
Kagaya et al. 1998, 26, 52, 161, Honshu (Tokyo).
Ohkawa 1999, 40, 44, Hokkaido (Tokachi).
Ohkawa and Ito 1999, 311-312, 316, 323, male, Hokkaido (Kushiro, Soya, Sorachi, Ishikari, Shiribeshi, Hiyama, Oshima), Honshu (Yamagata, Tokyo, Ishikawa).
Ito et al. 2000a, 26, 28-30, Hokkaido (Soya).
Ito et al. 2000b, 22, Hokkaido (Ishikari).
Kuhara 2001, 15, Hokkaido (Shiribeshi).
Nagayasu et al. 2003, 106, Hokkaido (Ishikari).
Nagayasu et al. 2005, 52, Hokkaido (Ishikari).
Tanida, 2005, 473, 477, male.
Kuhara et al. 2007, appendix 70, Hokkaido (Ishikari).
Ohkawa and Ito 2007, 188, 190-191, 208, male, Hokkaido (Kushiro, Tokachi, Soya, Ishikari, Shiribeshi, Oshima), Honshu (Aomori, Iwate, Miyagi, Yamagata, Tochigi, Niigata, Nagano).
Nakatani et al. 2008, 53, Hokkaido (Soya).
Tanaka 2009, 18, 20, male, Honshu (Akita).
Ito 2010, 37-39, 130, adult, larva, Hokkaido (Kushiro).
Ito et al. 2010, 59, 75, 83, Hokkaido (Shiribeshi, Hiyama, Oshima).
Kawase and Morita 2010, 41, Honshu (Mie).
Tanaka 2010a, 24, 26, male,Honshu (Akita).
Ito and Kubo 2011, 7, Hokkaido (Tokachi).
Kuhara 2011, 51, 71, flight season, Hokkaido (Sorachi, Ishikari).
Ito 2013, 55, 82, Hokkaido (Kushiro, Tokachi).
Hayashi et al. 2015, 188, Oki (Dogo).
Tanida 2016, 91.
Type locality. Hokkaido (Kamikawa?), Japan.
Distribution. Japan (Hokkaido, Honshu (north to central)).

Plectrocnemia nigrospinus (Hsu and Chen, 1996)

Polycentropus nigrospinus Hsu and Chen, 1996.
Plectrocnemia nigrospinus: Nozaki and Shimura 2013, 102-104, 106-107, male, female, larva, Yonaguni-jima, new combination (nigrospina).
Tanida 2016, 92 (nigrospina).
Type locality. Taiwan.
Distribution. Japan (Yonaguni-jima), Taiwan.

Plectrocnemia norikurana Tsuda 1942

Plectrocnemia norikurana Tsuda 1942a, 260-261, male, Honshu (Nagano).
Fischer 1972, 24.
Moriya 1994, 33, 70, Honshu (Kanagawa).
Ohkawa and Ito 1999, 312, 317-318, 323, male, Hokkaido (Sorachi, Shiribeshi), Honshu (Nagano).
Kuhara 2001, 15, Hokkaido (Shiribeshi).
Kawase et al. 2004, 111, Honshu (Ibaraki).
Morita 2001b, 220, Honshu (Aichi).
Tanida 2005, 473, 476, male.
Ohkawa and Ito 2007, 185-186, 207, male, Hokkaido (Kamikawa, Ishikari, Shiribeshi, Iburi), Honshu (Aomori, Kanagawa, Nagano).
Kuhara 2011, 51, 56, 60, 71, flight season, Hokkaido (Sorachi).
Moriya and Kubota 2012, 132, Honshu (Kanagawa).
Tanida 2016, 92.
Plectrocnemia sp. 1: Kuhara 1997, 59, Hokkaido (Shiribeshi). Mentioned by Kuhara (2001).
Type locality. Honshu (Nagano), Japan.
Distribution. Japan (Hokkaido, Honshu (north to central)).

Plectrocnemia odamiyamensis Ohkawa and Ito 2007

Plectrocnemia odamiyamensis Ohkawa and Ito 2007, 205-207, male, Honshu (Shizuoka), Shikoku (Ehime).
Tanida 2016, 92.
Type locality. Shikoku (Ehime), Japan.
Distribution. Japan (Honshu (central), Shikoku).

Plectrocnemia okiensis Kobayashi 1987

Plectrocnemia okiensis Kobayashi 1987, 16, 31, male, Oki.
Ohkawa and Ito 2007, 193-194, 207, male, Oki.
Tanida 2016, 92.
Type locality. Oki, Japan.
Distribution. Japan (Oki).

Plectrocnemia ondakeana Tsuda 1942

Plectrocnemia ondakeana Tsuda 1942a, 261-262, male, Honshu (Nagano).
Fischer 1972, 24.
Nozaki 1988, 39, Honshu (Kanagawa).
Kugo and Nozaki 1990, 61, Honshu (Hyogo).
Moriya 1994, 30, 33, 70, Honshu (Kanagawa, Yamanashi).
Morita 1996, 301, Honshu (Mie).
Moriya 1997, 61, Honshu (Kanagawa, Yamanashi).
Nozaki 1997, 35, Honshu (Kanagawa).
Kagaya et al. 1998, 26, 52, 162, Honshu (Tokyo).
Ohkawa and Ito 1999, 313, 319, 323, male, Hokkaido (Okhotsuk, Sorachi, Ishikari, Oshima), Honshu (Yamagata, Gumma, Tokyo, Kanagawa, Niigata, Nagano, Shizuoka).
Ito et al. 2000b, 22, Hokkaido (Ishikari).
Kuhara 2001, 15, Hokkaido (Shiribeshi).
Ishiwata et al. 2005, 110, 242, Honshu (Kanagawa).
Katsuma 2005b, 13, Honshu (Gumma).
Tanida 2005, 473, 476, male.
Katsuma 2006, 36, Honshu (Ibaraki).
Ohkawa and Ito 2007, 186-188, 207, male, Hokkaido (Sorachi, Ishikari, Shiribeshi, Iburi, Oshima), Honshu (Iwate, Miyagi, Yamagata, Fukushima, Ibaraki, Saitama, Kanagawa, Yamanashi, Nagano, Tottori).
Tanaka 2009, 18, 21, male, Honshu (Akita).
Ito et al. 2010, 59-60, Hokkaido (Shiribeshi, Oshima).
Tanaka 2010b, 17, Honshu (Akita).
Kuhara 2011, 51, 56, 60, 71, flight season, Hokkaido (Sorachi, Ishikari).
Katsuma 2012, 65, Honshu (Ibaraki).
Moriya and Kubota 2012, 133, Honshu (Kanagawa).
Ito 2013, 55, 82, Hokkaido (Okhotsuk).
Tanida 2016, 92.
Type locality. Honshu (Nagano), Japan.
Distribution. Japan (Hokkaido, Honshu), China.
Remarks. Nozaki et al. (2016) recorded a species similar to a variation of this species (Ohkawa and Ito 2007), and pointed out the necessity of more precise study to comfirm the status of this species.

Plectrocnemia scoparia Ohkawa and Ito 2007

Plectrocnemia scoparia Ohkawa and Ito 2007, 202, 204-205, 207, male, Honshu (Nagano, Gifu), Shikoku (Kochi), Kyushu (Fukuoka).
Moriya 2009a, 121, Honshu (Mie).
Tanida 2016, 92.
Type locality. Honshu (Nagano), Japan.
Distribution. Japan (Honshu (central), Shikoku, Kyushu).

Plectrocnemia suzukii Ohkawa and Ito 2007

Plectrocnemia suzukii Ohkawa and Ito 2007, 199, 201-202, 207, male, Hokkaido (Nemuro, Kushiro, Soya, Ishikari, Shiribeshi, Iburi, Hiyama), Honshu (Chiba, Shizuoka).
Ito et al. 2010, 60, Hokkaido (Shiribeshi, Hiyama).
Morita 2011, 213, 215, Honshu (Mie).
Ito and Kubo 2011, 7, Hokkaido (Tokachi).
Ito 2013, 55, 82, Hokkaido (Nemuro, Kushiro, Tokachi).
Nakatani 2016, 240, Hokkaido (Nemuro).
Tanida 2016, 92.
Plectrocnemia sp. 1: Ito et al. 1999, 18, 23, 26, Hokkaido (Kushiro). Mentioned by Ohkawa and Ito (2007).
Ito et al. 2000a, 22, 26, 28-29, Hokkaido (Soya).
Ito et al. 2004, 10, Hokkaido (Kushiro).
Ito and Kosugi 2007, 53, Hokkaido (Kushiro).
Kuhara et al. 2007, 139, appendix 70, Hokkaido (Ishikari).
Plectrocnemia sp. 2: Ito et al. 1998, 16, Hokkaido (Nemuro). Mentioned by Ohkawa and Ito (2007).
Plectrocnemia sp.: Kuhara 2001, 15, Hokkaido (Shiribeshi). Mentioned by Ohkawa and Ito (2007).
Type locality. Honshu (Shizuoka), Japan.
Distribution. Japan (Hokkaido, Honshu (central)).

Plectrocnemia tochimotoi Schmid 1964

Plectrocnemia tochimotoi Schmid 1964, 829, 831, male, Honshu.
Kobayashi 1984b, 4, Sado.
Nozaki 1988, 39, Honshu (Kanagawa).
Moriya 1994, 30, 33, 70, Honshu (Kanagawa, Yamanashi).
Moriya 1997, 61, Honshu (Kanagawa, Yamanashi).
Kagaya et al. 1998, 26, 52, 163, Honshu (Tokyo).
Ishiwata et al. 2005, 110, 244, Honshu (Kanagawa).
Katsuma 2005a, 6, Honshu (Ibaraki).
Tanida 2005, 473, 477, male.
Ohkawa and Ito 2007, 191-192, 207, male, Honshu (Aomori, Iwate, Miyagi, Yamagata, Ibaraki, Saitama, Tokyo, Kanagawa, Niigata, Yamanashi, Mie), Shikoku (Ehime, Kochi), Sado, Tsushima.
Kawase and Morita 2010, 41, Honshu (Mie, Shiga).
Katsuma 2011b, 67, Honshu (Ibaraki).
Katsuma 2012, 65, Honshu (Ibaraki).
Moriya and Kubota 2012, 133, Honshu (Kanagawa).
Hayashi et al. 2013, 13, Oki (Dogo).
Kawase and Morita 2014, 5, Honshu (Shiga).
Nozaki 2016, 74, 342, 343, 434, 450, male, Shikoku (Kochi).
Tanida 2016, 92.
Type locality. Tochimoto, Japan.
Distribution. Japan (Honshu (north to central), Shikoku, Sado, Tsushima).

Plectrocnemia tsukuiensis (Kobayashi 1984)

Kyopsyche tsukuiensis Kobayashi 1984a, 4-5, male, Honshu (Kanagawa).
?Holocentropus tsukuiensis: Tanida and Takemon 1993, 240, 242, Honshu (Kyoto).
Plectrocnemia tsukuiensis: Li et al. 1998, 665; new combination.
Ohkawa and Ito 2007, 193, 195, 207, male, Honshu (Saitama, Nagano, Shizuoka, Hyogo), Shikoku (Ehime).
Morita 2008a, 2, 5, Honshu (Mie).
Morita 2008b, 6-7, Honshu (Shiga).
Moriya 2009b, 139, Honshu (Mie).
Kawase and Morita 2010, 41, Honshu (Mie, Shiga).
Moriya and Kubota 2012, 133, Honshu (Kanagawa).
Tanida 2016, 92.
Type locality. Honshu (Kanagawa), Japan.
Distribution. Japan (Honshu (central), Shikoku), China.

Plectrocnemia wui (Ulmer 1932)

Polycentropus wui Ulmer 1932, 46-47, male.
Plectrocnemia wui: Martynov 1934, 213, 217, 219, 335-336, male.
Tanida and Takemon 1993, 240, 242, 245, emergence period, Honshu (Kyoto).
Morita 2001a, 174-175, Honshu (Mie).
Uenishi and Yoshitaka 2004, 17, Honshu (Okayama).
Tanida 2005, 473.
Ohkawa and Ito 2007, 188-189, 208, male, Honshu (Nagano, Shizuoka, Mie, Shiga), Kyushu (Fukuoka).
Nozaki and Tanida 2007, 248, Honshu (Shizuoka).
Kawase and Morita 2010, 41, Honshu (Shiga).
Morita 2009a, 121, Honshu (Mie).
Inazu and Nishida 2011, 189, male, Honshu (Hyogo).
Morita 2012, 250, Honshu (Mie).
Inazu 2013a, 56, Honshu (Hyogo).
Tanida 2016, 92.
Type locality. China.
Distribution. Japan (Honshu (central to west), Kyushu), Russia (Sakhalin, Primorye), China (Beijin), North Korea.

Genus Polycentropus Curtis

Iwata (1927a, 1927b) recorded a European species Polycentropus flavomaculatus Pictet based on only larval specimens from Honshu and Kyushu. However, Tsuda (1942) proposed that the name should not be used for Japanese fauna because adults of this species had never been found from Japan.
Tanida (1997b) recorded an unnamed species probably belonging to this genus from Okinawa-jima, however, neither generic nor specific status of this 'species' is clear.

Genus Polyplectropus Ulmer

Five named species belonging to this genus have been recorded from Japan.

Polyplectropus malickyi Nozaki, Katsuma and Hattori 2010
Polyplectropus malickyi Nozaki et al. 2010, 239-241, male, female, pupa, larva, Honshu (Ibaraki, Kanagawa, Yamanashi, Shizuoka, Aichi, Mie, Shiga).
Kawase and Morita 2010, 41, Honshu (Mie, Shiga).
Katsuma 2011a, 47, 50, Honshu (Ibaraki).
Morita 2011, 216, Honshu (Mie).
Katsuma 2011b, 67, Honshu (Ibaraki).
Morita 2012, 250, Honshu (Mie).
Katsuma 2016, 47, Honshu (Ibaraki).
Nozaki 2016, 341, 434, wing venation.
Tanida 2016, 93.
Type locality. Honshu (Shizuoka), Japan.
Distribution. Japan (Honshu (central))

Polyplectropus moritai Nozaki, Katsuma and Hattori 2010
Polyplectropus moritai Nozaki et al. 2010, 238-239, male, Honshu (Mie).
Kawase and Morita 2010, 41, Honshu (Mie).
Tanida 2016, 93.
Polyplectropus sp. (af. protensis): Morita 1998a, 72, 74, male, Honshu (Mie). Mentioned by Nozaki et al. (2010).
Type locality. Honshu (Mie), Japan.
Distribution. Japan (Honshu (central)).

Polyplectropus nocturnus Arefina 1996

Polyplectropus nocturnus Arefina 1996, 61-64, male, Russia (continental part of Far East).
Morita 1998b, 97, Honshu (Mie).
Tanida 2016, 93.
Type locality. Continental part of Far East, Russia.
Distribution. Japan (Honshu (central)), Russia (continental part of Far East).

Polyplectropus protensus Ulmer 1908

Polyplectropus protensus Ulmer 1908, 350-352, male, ?Honshu (Akazawa).
Tsuda 1942a, 262.
Fischer 1962, 94.
Fischer 1972, 37.
Kawase et al. 2004, 111, Honshu (Ibaraki).
Katsuma 2005a, 6, Honshu (Ibaraki).
Tanida 2005, 474.
Nozaki et al. 2010, 236-238, male, female, larva, pupa, Honshu (Ibaraki, Yamanashi, Shizuoka).
Katsuma 2011a, 47, 50, Honshu (Ibaraki).
Tanida 2016, 93.
Type locality. Honshu (Yamanashi), Japan. Mentioned by Nozaki et al. (2010)
Distribution. Japan (Honshu (central)).

Polyplectropus unicus (Hsu and Chen, 1996)

Polycentropus unicus Hsu and Chen, 1996.
Polyplectropus unicus: Nozaki and Shimura 2013 104-105, male, female, Yonaguni-jima, new combination.
Tanida 2016, 93.
Type locality. Taiwan.
Distribution. Japan (Yonaguni-jima), Taiwan.

Polyplectropus sp. aff. nocturnus

Polyplectropus sp. aff. nocturnus: Katsuma, 2016, 48, Honshu (Ibaraki).
Remarks. This species is very similar to Polyplectropus nocturnus Arefina 1996, but the genitalic structure is slightly different from that of the latter (Katsuma 2016).

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