taxonID	type	description	language	source
A81D87C90F25FFBFFC9040B7029EFD10.taxon	description	(Fig. 1 A)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F25FFBFFC9040B7029EFD10.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♀, Futamatazawa, Ôno-chô, Kameda-gun, 4. vi. 1992, R. B. Kuranishi leg. (KUM); 1 ♁, Chiroro-dake, Hidaka-chô, 10. vii. 1992, K. Haga leg. (KUM); 1 ♀, same data, but 24. vii. 1993 (KUM); 1 ♀, “ Higashi-Ohnuma Nanae, Oshima ”, 14. vi. 1986, S. Nomura leg. (KUM); 2 ♀♀, Ashoro-chô, 24. vi. 1980, H. Takemoto leg. (KUM); 1 ♀, Iwaobetsu, Shari-chô, 3. viii. 1989, K. Haga leg. (KUM); 1 ♁ 4 ♀♀, Shiretoko-tôge, Shari-chô, 3. viii. 1989, K. Haga leg. (KUM); 1 ♁, head of the stream of Yon-no-sawa, Mitsumata (about 1400 m alt.), Kamishihoro-chô, 9. vii. 2004, K. Haga leg. (KUM); 1 ♁, Atsunai, Urahoro-chô, 26. vii. 2009, M. Ohara leg. (KUM); 1 ♁, Shippu, Atsuta-ku, Ishikari-shi, 2. vi. 2018, Y. Tasaku leg. (KUM). HONSHU: FUKUSHIMA- KEN: 1 ♀, Buna-daira, Hinoemata-mura, 5. viii. 1984, K. Haga leg. (KUM); 1 ex., Aizu-Wakamatsu, 16. iv. 2006, T. Lackner leg. (cSch). IBARAKI- KEN: 1 ♁, The left bank of the Watarase-gawa just upstream of Mikuni bridge, Koga-shi, 23. ix. 1996, K. Haga leg. (KUM). TOCHIGI- KEN: 1 ♁, Yumoto, Nikkô-shi, 26. vi. 1983, Y. Nagashima leg. (KUM); 1 ♀, Nikkozawa, Nikko-shi, 6. vii. 1995, S. Naomi leg. (KUM); 2 ♁♁, Nasu- - dake, 3. vi. 1994, S. Naomi leg. (KUM); 1 ♁, Maeshirane-san, Nikkô-shi, 2. vii. 1982, S. Naomi leg. (KUM); 1 ♁, Senjugahama, Nikkô-shi, 27 – 28. vii. 2021, S. Imada leg. (KUM); 1 ex., Akamure b. Nikko (1450 m alt.), 1974, H. Franz leg. (NHMW); 2 exs., Nikko National Park, Ryuzu, (1400 m alt.), 16. vii. 1980, I. Löbl leg. (MHNG). GUNMA- KEN: 1 ex., Usui-tôge, (900 m alt.), 25. vii. 1980, I. Löbl leg. (cSch, further specimens in MHNG); 1 ex., 7 km E Usui-tôge, (850 m alt.), 24. vii. 1980, A. & Z. Smetana leg. (cSch, further specimens in cSme). SAITAMA- KEN: 1 ♁, Right bank of the Edo-gawa, a little downstream of the Kinnoi-ô-hashi, Kasukabe-shi, 21 – 23. ix. 1991, K. Nemoto leg. (KUM). CHIBA- KEN: 1 ♁, Hagiyamashinden, Sakura-shi, 17. iv. 1990, T. Takeda leg. (KUM); 1 ♁, Tozura, Yôrô-keikoku, Ichihara-shi, 20. v. 1990, T. Takeda leg. (KUM); 1 ♀, Yomogi, Kiyosumi-yama, 13. v. 1990, T. Takeda leg. (KUM); 1 ♁, “ Yôrô-valley ”, 9. v. 1993, Ôgi leg.; 2 ♁♁, “ Fudago ”, Kimitsu-shi, 20. iv. 1989, S. Naomi leg. (KUM); 1 ♁, 19. v. 1979, M. Tao leg. (KUM). TOKYO- TO: 1 ♀, Mitake-san, 26. vi. 1977, M. Tao leg. (KUM); 1 ♁, Fuchû-shi, 12. iv. 1987, M. Tao leg. (KUM); 1 ♁, Takao-san, 6. vii. 1985, M. Tao leg. (KUM); 1 ♀, same data, but 29. vii. 1979 (KUM). NIIGATA- KEN: 1 ♁, The left bank of Uono-gawa, Horikiri, Minamiuonuma-shi, 7. v. 1995, K. Haga leg. (KUM). FUKUI- KEN: 1 ♁, Taniyama, Ôno, 8. vi. 1975, H. Sasaji leg. (KUM). YAMANASHI- KEN: 1 ♁, Daibosatsu-tôge, 9. vi. 1979, M. Tao leg. (KUM); 1 ♀, Kiyosato Yatsu-ga-take, 6. vii. 1982, S. Naomi leg. (KUM); 1 ♀, Tamuse, Ôtsuki-shi, 24. vii. 1983, K. Haga leg. (KUM). NAGANO- KEN: 2 exs., Mt. Iwasuge bei Hasuike östlich Nagano, 1974, Franz leg. (cSch, NHMW); 2 exs., Kamikochi, Northern alps (5000 ft. alt.), 20. vi. / 30. vii. 1939, E. Suenson leg. (ZMUK, cSch). MIE- KEN: 1 ♀, East face of Sanzukôochi-yama, Ôdaigahara (1500 m alt.), Ôdai-chô, 9. vi. 1985, K. Haga leg. (KUM). KYOTO- FU: 1 ♀, Iwakura, 11. iv. 1981, T. Ogata leg. (KUM). HYOGO- KEN: 1 ♀, “ Otomizudani ” (probably Onzui-keikoku), 6. vi. 1984, S. Nomura leg. (KUM). NARA- KEN: 1 ex., Nara-kôen, 24. iii. 2006, T. Lackner leg. (cSch); 1 ex., foot of Mt. Kasuga, 20. viii. 1980, P. M. Hammond leg. (BMNH). TOTTORI- KEN: 1 ♀, Hôki-Dai-sen, 12. vi. 1976, S. Naomi leg. (KUM). OKAYAMA- KEN: 2 exs., Aida-gun, Higashiawakura-son, Ushiroyama, 3. v. 2003, litter sifted, Fujitani leg. (KUM, cSch); 1 ex., Okayama-shi, Kugui, under seaweed at beach, 9. v. 2003, Fujitani leg. (KUM). KYUSHU: KUMAMOTO- KEN: 1 ex., Yamaingiri, Gokanosh ỏ, 9. vii. 1983, H. Aramaki leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F25FFBFFC9040B7029EFD10.taxon	diagnosis	Diagnosis. Tachinus (Latotachinus) punctiventris is distinguished from other members of the subgenus Latotachinus by the combination of the following characters: head and pronotum without microsculpture; abdomen with fine pubescence; male tergite VIII with three lobes. For detailed redescription, see LI (1995 b: 201).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F25FFBFFC9040B7029EFD10.taxon	distribution	Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu). This species is widely distributed in lowland to subalpine zones in mainland Japan.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F25FFBFFC9040B7029EFD10.taxon	discussion	Remarks. The type material of T. punctiventris was studied by ULLRICH (1975) who designated a lectotype and included five additional specimens as paralectotypes. According to SHARP’ s (1888) original description, only one of these additional specimens (the female from Oyayama) can be regarded as a type specimen. This species displays intraspecific variation in wing morphology, with macropterous (wings well-developed, functional) or brachypterous individual (wings small, flightless). The majority of specimens are macropterous, some are brachypterous. The macropterous individuals exhibit a pair of pruinose spots on each of the tergites III and IV, whereas the brachypterous individuals display a pair of pruinose spots solely on tergite III or none at all.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	description	(Fig. 1 B)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	materials_examined	Type material studied. T. diminutus. LECTOTYPE: ♁: “ Tachinus diminutus ♁ Type Sendai 21.10.80 [illegible] Lewis [on the mounting card] / Syntype [round, pale blue margin] / Type [round, red margin] / Sendai 20. X. – 22. X. 80 / Japan G. Lewis 1910 - 320 / Tachinus diminutus Shp. ♁ W. G. Ullrich det. 19312 / Lectotypus Tachinus diminutus Sharp ♁ des. W. G. Ullrich 1973 19312 [red] ”, (BMNH). PARALECTOTYPES: ♀: “ Tachinus diminutus ♀ Type Kiga Jap. Lewis [on the mounting card] / Syntype [round, pale blue margin] / Type [round, red margin] / Japan G. Lewis / Sharp Coll. 1905 - 313 / Tachinus diminutus Shp. ♀ W. G. Ullrich det. 20940 / Paralectotypus Tachinus diminutus Sharp ♀ des. W. G. Ullrich 1974 20940 [rot] ”, (BMNH). Tachinus aokii. PARATYPES: 1 ♁ 5 ♀♀: “ Sotoyama, Tamayama-mura, Iwate Pref., JAPAN 6. IX. 2008 J. Aoki leg. / PARATYPE Tachinus (Tachinoderus) aokii HAYASHI sp. nov. ” (KUM). Additional material examined. JAPAN: HONSHU: IWATE- KEN: 1 ♁, Yakebashiri, Iwate-san, Hachimantai-shi, 1. x. 1992, S. Nomura leg. (KUM). FUKUSHIMA- KEN: 1 ♁, Adatara-yama, 9. vii. 1985, S. Nomura leg. (KUM); 1 ♁ 1 ♀, Yokomuki, Adatara-yama, Inawashiro-machi, 10. vii. 1985, S. Nomura leg. (KUM); 1 ♁, Nakatsugawa, Azuma-yama, 19. viii. 1996, S. Naomi leg. (KUM); 3 exs., Bandai-kôgen (1000 m alt.), 15. iv. 2006, T. Lackner leg. (cSch). GUNMA- KEN: 1 ♀, Nikko distr., L. Marunuma (1430 – 1500 m alt.), 11 – 12. viii. 1980, P. M. Hammond leg. (BMNH). TOKYO- TO: 1 ♀, old road on the right bank of Ogawadani (700 m alt.), Nippara, Okutama-machi, 4. vii. 1999, K. Haga leg. (KUM); 1 ex., Nippara valley, Okutama, 10. viii. 2003, P. Jałoszyński leg. (cSch). YAMANASHI- KEN: 1 ♀, Hirogawara, Kita-dake, 20. viii. 1987, S. Nomura leg. (KUM). NAGANO- KEN: 1 ♁, Iriyamabe, Matsumoto-shi, 4. v. 2022, T. Hashizume leg. (KUM); 1 ♁ 1 ♀, Ashidahakkano, Tateshina-machi, 16. viii. 2020, T. Hashizume leg. (KUM); 1 ex., Suhara, 15. v. 1953, Y. Wada leg. (NHMW). SHIKOKU: EHIME- KEN: 4 ♁♁ 6 ♀♀, Odamiyama, 11. vii. 1994, E. Yamamoto leg. (KUM); 1 ♁, Saragamine, Toon-shi, 33 ° 28 ′ 37.4 ″ N, 132 ° 58 ′ 36 ″ E, 100 - year dec. mountain forest, 16. v. 2018, P. Jałoszyński leg. (cJał). KYUSHU: NAGASAKI- KEN: 1 ♀, Unzen- - dake, 6. vi. 1977, S. Imasaka leg. (KUM). KUMAMOTO- KEN: 1 ♀, “ Mt. Hakucho ”, 7 – 9. xi. 1980, M. T. Chûjô leg. (KUM); 1 ♁, Shiratori-yama, 5. iv. 1987, S. Nomura leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	diagnosis	Diagnosis. Tachinus (Tachinoderus) diminutus is similar to T. (Tachinoderus) yamato in forebody without microsculpture and asymmetrical parameres of aedeagus but can be distinguished by aedeagus with the left paramere only slightly shorter than the right one. For detailed redescription, see LI (1995 b: 211).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	biology_ecology	Biology. This species is often collected from dead trees.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	distribution	Distribution. Japan (Honshu, Izu-shotô Isls. (Mikura-jima Is.), Shikoku, Kyushu). Specimens of T. diminutus recorded from Mikura-jima (SAWADA & WATANABE 1969) need to be reexamined because many specimens of a similar species, T. kobensis, were identified from this island in this study. Remarks on the synonymy. In the original description, HAYASHI & YOSHIDA (2016) compared Tachinus aokii with T. diminutus Sharp. They mentioned differences in the absence of microsculpture on tergite III and differences in the shape of the aedeagus and female tergite VIII. The examination of these characters revealed that the microsculpture of the abdominal tergites is subject to a certain variability. The same applies to the shape of female tergite VIII. All examined males have nearly identical shape of the aedeagus, including the asymmetrical parameres, and correspond well with the illustration in HAYASHI & YOSHIDA (2016). The male genitalia are identical with those of the lectotype of Tachinus diminutus examined by us. The description of T. aokii is probably based on the comparison of the genitalia with the illustration of the aedeagus of Tachinus diminutus by LI (1995 b, fig. 7 D) which, in contrast to the description in the text, depicts a symmetrical aedeagus. Based on these observations, we synonymize T. aokii with T. diminutus. Tachinus (Tachinoderus) iriomotensis Li, 1994 [Japanese name: Iriomote-marukubi-hanekakushi] (Fig. 1 C)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	materials_examined	Type material studied. PARATYPES: JAPAN: OKINAWA- KEN: ISHIGAKI- - JIMA IS.: 5 ♁♁ 2 ♀♀, Omoto-dake, 8. vi. 1983, S. Imasaka leg. (KUM); 2 ♁♁, same locality, 20. iii. 1978, S. Naomi leg. (KUM); 3 ♁♁ 3 ♀♀, same locality, 9. iv. 1986, S. Nomura leg. (KUM); IRIOMOTE- JIMA IS.: 6 ♁♁ 3 ♀♀, Kampiree-no-taki (Kampree waterfall), 14. iv. 1986, S. Nomura leg. (KUM); 1 ♁ 4 ♀♀, same locality, 27. iii. 1984, S. Nomura leg. (KUM). Additional material examined. JAPAN: OKINAWA- KEN: ISHIGAKI- JIMA IS.: 1 ♀, 31. vii – 19. x. 1995, K. Takahashi leg. (KUM); 3 exs., 14 – 20. ix. 2003, P. Jałoszyński leg. (cSch, further specimen in cJał). IRIOMO- TE- JIMA IS.: 1 ♀, Kampiree-no-taki (Kampree waterfall), 16. x. 1988, S. Nomura leg. (KUM); 1 ♀, same locality, 23. iii. 1998, M. Maruyama leg. (KUM); 1 ♀, Komi, 20. iii. 1998, M. Maruyama leg. (KUM); 12 ♁♁ 13 ♀♀, same locality, 13 – 16. iii. 2002, H. Sugaya leg. (KUM); 1 ♀, same data, but 19 – 10. iii. 2002 (KUM); 6 exs., Urauchi river, hiking trail to Kampiree-no-taki, forest litter, 25. xii. 2008, S. Vit leg. (cSch); 2 exs., mountain jungle, sifted, 14. i. 2007, T. Lackner leg. (cSch).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	diagnosis	Diagnosis. Tachinus (Tachinoderus) iriomotensis can be distinguished from other members of the subgenus Tachinoderus from Japan by the presence of branched lobes of parameres of aedeagus. This species is similar to T. (Tachinoderus) laosensis Katayama & Li, 2008, described from Laos, but can be distinguished by smaller body and shorter branched lobes of the parameres (KATAYAMA & LI 2008). For detailed redescription, see LI (1995 b: 214).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	biology_ecology	Biology. This species is often collected from leaf litter.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	distribution	Distribution. Japan (Ishigaki-jima Is., Iriomote-jima Is.).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F27FFB8FF7942F701C1FED1.taxon	discussion	Remarks. SHIBATA et al. (2013) listed this species for Taiwan, but this record is erroneous (CHANG et al. 2019). The species is probably endemic for the islands of Ishigaki-jima and Iriomote-jima.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	description	(Fig. 1 D)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♁ 1 ♀, Oyobe-gawa, Matsumae-chô, 9. x. 2022, Y. Tasaku leg. (KUM). HONSHU: FUKUSHI- MA- KEN: 1 ♀, Yamamoto-fudô, the left bank of Miya-kawa (280 m alt.), Tanagura-machi, 23. v. 1998, K. Haga leg. (KUM). IBARAKI- KEN: 5 exs., Tsukuba-san, near cable car station, 14. xi. 2007, P. Jałoszyński leg. (cJał, cSch); 1 ex., Tsukuba-san, near Tsukubasan-jinja, 3. v. 2007, P. Jałoszyński leg. (cJał). TOCHIGI- KEN: 1 ♀, Tashiroyama-rindô, Dorobu, Nikkô-shi, 20. vii. 1986, A. Izumi leg. (KUM). CHIBA- KEN: 18 ♁♁ 11 ♀♀, Kiyosumi-yama, Kaisho, Ôtaki-machi, 19. vii. 1991, S. Naomi leg. (KUM); 1 ♀, same locality, 5. v. 1993, T. Takeda leg. (KUM); 2 ♀♀, Takago-yama, Kimitsu-shi, 5. v. 1996, S. Naomi leg. (KUM); 8 ♁♁ 6 ♀♀, same data, but 11. viii. 1996 (KUM); 1 ♀, Takago-yama, Kimitsu-shi, 19. vi. 1990, T. Takeda leg. (KUM); 1 ♁, Fudago, Kimitsu-shi, 20. iv. 1989, S. Naomi leg. (KUM); 3 ♁♁ 3 ♀♀, Kiwadahata, Kimitsu- - shi, 4. iv. 1990, T. Takeda leg. (KUM); 1 ♀, Motokiyosumi, Tashiro, Kimitsu-shi, 3. v. 1990, T. Takeda leg. (KUM); 2 ♁♁ 1 ♀, Kiyosumi-yama, Kamogawa-shi, 9. ix. 1990, T. Takeda leg. (KUM); 3 ♁♁ 1 ♀, same data, but 23. ix. 1990 (KUM); 1 ♀, Kiyosumi-yama, Kamogawa-shi, 25. iv. 1993, T. Takeda leg. (KUM); 2 ♁♁ 1 ♀, Uchiura-kenminno-mori, Kamogawa-shi, 5. iv. 1990, T. Takeda leg. (KUM); 4 ♀♀, Fudô-no-taki, Kiyosumi-yama, Kamogawa-shi, 6. v. 1990, T. Takeda leg. (KUM); 2 ♀♀, Kiyosumi-yama, Sakamoto, Kamogawa-shi, 15. iv. 1990, T. Takeda leg. (KUM); 3 ♁♁ 2 ♀♀, same locality, 29. iv. 1990, T. Takeda leg. (KUM); 1 ♁, Yomogi, Kiyosumi-yama, Kamogawa-shi, 27. v. 1990, T. Takeda leg. (KUM); 1 ♀, same locality, 24. iv. 1990, T. Takeda leg. (KUM); 1 ♁, The top of Kiyosumi-yama, Kamogawa-shi, 27. iv. 1986, K. Haga leg. (KUM); 1 ♁ 2 ♀♀, Tôjô-kaigan near Kamogawa Sea World, Kamogawa-shi, 27. ix. 1987, K. Haga leg. (KUM); 1 ♁ 2 ♀♀, Tozura, Yôrô-keikoku, Ichihara-shi, 22. v. 1990, T. Takeda leg. (KUM); 3 ♁♁ 5 ♀♀, Chikura-machi, Minamibôsô-shi, 26. vi. 1994, S. Naomi leg. (KUM). TOKYO- TO: 1 ♁ 3 ♀♀, Umenokidaira, Hachiôji-shi, 17. iv. 1996, M. Maruyama leg. (KUM); 1 ♀, Takao-san Hachiôji-shi, 26. iv. 1986, A. Izumi leg. (KUM). MIKURA- JIMA IS.: 1 ♁ 1 ♀, Sato-kurosaki, 6. vi. 1996, S. Naomi & M. Maruyama leg. (KUM); 1 ♁ 1 ♀, Oyama, 7. vi. 1996. S. Naomi & M. Maruyama leg. (KUM); 5 ♁♁ 4 ♀♀, between Sato and Kawada, 8. vi. 1996, S. Naomi & M. Maruyama leg. (KUM). KANAGAWA- KEN: 1 ♁, Odawara-shi, 20. v. 1972, Y. Hirano leg. (KUM); 2 ♁♁ 2 ♀♀, Hakone, 1. v. 1974, Y. Hirano leg. (KUM); 2 ♁♁, Tanzawa-san, 26. vi. 1983, Y. Hirano leg. (KUM); 1 ♀, Miyanoshita, Hakone-machi, 8. vi. 1986, A. Izumi leg. (KUM). NIIGATA- KEN: 2 ♁♁, Sasagamine Myoko-san, 14 – 15. vi. 1980, S. Naomi leg. (KUM); 6 ♁♁, the right bank of Uono-gawa just downstream of the bridge of Iiyama Line, Nagaoka-shi, 30. iv. 1995, K. Haga leg. (KUM); 1 ♀, Outer shore of the barof the left side of Sinano-gawa, Ushigashima, Nagaoka-shi, 30. iv. 1995, K. Haga leg. (KUM). SHIZUOKA- KEN: 1 ♁, Sudogawa Val., Fuji-shi, 6. vi. 1996, S. Nomura leg. (KUM); 2 ♀♀, Suishôchi, Izu-zhi, 14. iv. 1985, K. Haga leg. (KUM); 1 ex., Izu, Kisami-Ȏhama beach, Shimoda-shi, 28. iii. 2007, T. Lackner leg. (cSch). MIE- KEN: 1 ♀, Shinmei, Komono-chô, 8. iii. 2010, N. Tsuji leg. (KUM). KYOTO- FU: 1 ex., Seryô-tôge, 6. viii. 1980, Leaf litter, P. M. Hammond leg. (BMNH). NARA- KEN: 1 ♀, Ohdaigahara, 25 – 26. vi. 1981, S. Naomi leg. (KUM). WAKAYAMA- KEN: 2 ♁♁, 28 – 29. vi. 1981, S. Naomi leg. (KUM); 1 ♁, Minamihizue, Shingû-shi, 19. iv. 1994, I. Matoba leg. (KUM); 2 ♁♁ 3 ♀♀, Nachi-san, Nachikatsuura-chô, 13. vii. 1999, M. Maruyama leg. (KUM); 6 ♁♁ 1 ♀, Hirai, Kozagawa-chô, 16. vii. 1999, M. Maruyama leg. (KUM). KYUSHU: SAGA- KEN: 1 ♁, Ryûmon-kyô 23. x. 1977, H. Ôishi leg. (KUM). NAGASAKI- KEN: 1 ♀, Todoroki-kyô, 1. vi. 1987, S. Nomura leg. (KUM); 2 ♀♀, Iwaya-yama, Nagasaki-shi, 31. v. 1987, S. Nomura leg. (KUM); 1 ♁ 1 ♀, Tara-dake, 7. viii. 1977, M. Ôishi leg. (KUM). GOT Ṏ- RETT Ṏ ISLS.: 1 ♁, Mihino-ura, Fukue-jima Is., 29. VI. 1996, S. Nomura leg. (KUM). KUMAMOTO- KEN: 2 ♁♁ 1 ♀, Hitoyoshi-shi, 15. x. 1977, Ôishi leg. (KUM). AMAKUSA- SHOT Ṏ ISLS.: 3 ♁♁ 2 ♀♀, Amakusa-machi, Amakusa-shi, 9. x. 1977, S. Imasaka leg. (KUM); 1 ♁ 1 ♀, Shimoda, Amakusa-shi, 7. viii. 1977, H. Ôishi leg. (KUM). OITA- KEN: 1 ex., Ôita, (NHMW). MIYAZAKI- KEN: 10 ♁♁ 5 ♀♀, Onino-iwaya, Takachiho-kyô, 3. xii. 1994, S. Nomura leg. (KUM); 2 ♁♁ 2 ♀♀, Miyanotani, Aya-chô, 8. ii. 1994, S. Nomura leg. (KUM); 1 ♁, Ayaminami, 10. v. 1985, S. Nomura leg. (KUM). KAGOSHIMA- KEN: 2 ♁♁, Mattonohara, Gorôyama-rindo, Kanoya-shi, 2. v. 2001, K. Haga leg. (KUM); 1 ♁ 1 ♀, the left bank of Ichinotani-gawa (100 m alt.), Hetsuka, Kimotsuki-chô, 4. v. 1997, K. Haga leg. (KUM); 1 ♁, Branch line of Kunimidaira-rindô 4631 - 70 - 41, Kimotsuki-chô, 1. v. 1999, K. Haga leg. (KUM). ATTRIBUTION QUESTIONABLE: 1 ♀, “ HIRATANI ”, 26. iii. 1968, Y. Eguchi leg. (KUM); 1 ex., Mt. Mayo, 18. v. 1952, Y. Wada leg. (NHMW).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	diagnosis	Diagnosis. Tachinus (Tachinoderus) kobensis is similar to T. (Tachinoderus) nigriceps in the appearance and shape of aedeagus but can be distinguished by dark-colored pronotum and longer sclerotized tube of inner sclerite of aedeagus. For detailed redescription, see LI (1995 b: 208).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	biology_ecology	Biology. This species is often collected from leaf litter.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	distribution	Distribution. Japan (Hokkaido, Honshu (incl. Oki Isl.), Izu-shotô Isls. (Mikura-jima Is.), Shikoku, Kyushu (incl. Amakusa-shotô Isls., Gotô-rettô Isls., Tsushima Is.), Yaku-shima Is.). It is recorded from Hokkaido, Izu-shotô and Gotô-rettô for the first time. ULLRICH (1975) recorded this species from Tsushima as T. nigriceps (for details, see remarks on T. nigriceps nigriceps). Tachinus (Tachinoderus) naomii Li, 1994 [Japanese name: Naomi-marukubi-hanekakushi] (Fig. 1 E)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	materials_examined	Type material studied. PARATYPES: JAPAN: KAGOSHIMA- KEN: AMAMI- - ÔSHIMA IS.: 1 ♀, Yuwan-dake, 11. v. 1983, S. Nomura leg. (KUM); 1 ♀, same data, but 8. v. 1987, (KUM); 2 ♁♁ 1 ♀, “ Mt. Iwan ”, 20. vi. 1980, S, Imasaka leg. (KUM); 1 ♁, Yui-dake, 14. v. 1987, S. Nomura leg. (KUM); 2 ♁♁ 3 ♀♀, Chûô-rindô, 18. vi. 1980, S. Imasaka leg. (KUM); 5 ♁♁ 5 ♀♀, Hatsuno, 27. iii. 1978, S. Naomi leg. (KUM); 2 ♁♁ 2 ♀♀, Nishi-Nakama, 6. vi. 1980, H. Makihara leg. (KUM); 1 ♀, Yamatohama, 24. iii. 1978, S. Naomi leg. (KUM); 2 ♁♁, Santarô-tôge, 29. vi. 1981, K. Ogata leg. (KUM). Additional material examined. JAPAN: KAGOSHIMA- KEN: AMAMI- - ÔSHIMA IS.: 1 ♁ 1 ♀, Santarô-tôge, 28. vi. 1994, A. Saito leg. (KUM); 1 ♀, “ Mt. Yasuman ”, 15. v. 1996, S. Onoda leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	diagnosis	Diagnosis. Tachinus (Tachinoderus) naomii can be distinguished from other members of the subgenus Tachinoderus by the combination of the following characters: elytra without microsculpture; male sternite VII with a row of granules along posterior margin, and a small patch of granules at base of triangular impression; apical halves of parameres of aedeagus strongly narrowed; outer lobes of female tergite VIII with two long and six short bristles along each external margin (modified after LI, 1995 b). For detailed description, see LI (1994: 661).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	distribution	Distribution. Japan (Amami-Ôshima Is.), China.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F20FFB8FF77413405E8F7DC.taxon	discussion	Remarks. SHIBATA et al. (2013) listed this species for Taiwan, but this record is erroneous (CHANG et al. 2019).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FF1040B703D2FB24.taxon	description	(Fig. 1 F)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FF1040B703D2FB24.taxon	materials_examined	Type material studied. T. sanguinithorax: SYNTYPES: 1 ♁, “ ♁ / Oita (NO-Kiushiu) / Japan Reitter / sanguinithorax Bernh. Typus Tachinus / sanguinithorax Bernh. Typus Tachinus / Dr. M. Bernhauer 10. XI. donavit 1942 / ex coll. Scheerpeltz [blue] / TYPUS Tachinus sanguinithorax Bernhauer [red] / Tachinus (Tachinus) nigriceps (Sharp) det. M. Schülke 2007 ” (NHMW); 1 ♀, “ ♀ / Oita (NO-Kiushiu) / Japan Reitter / sanguinithorax Bernh. Typus Tachinus / Dr. M. Bernhauer 10. XI. donavit 1942 / ex coll. Scheerpeltz [blue] / TYPUS Tachinus sanguinithorax Bernhauer [red] / Tachinus (Tachinus) nigriceps (Sharp) det. M. Schülke 2007 ” (NHMW). Additional material examined. JAPAN: HOKKAIDO: 1 ♀, Shoro, 4. viii. 1979, Y. Kurosa leg. (KUM); 1 ♀, Môrai-kaigan near Sapporo, 25. viii. 1981, S. Morita leg. (KUM); 1 ♁, Sumikawa, Minami-ku, Sapporo-shi, 18. v. 2020, Y. Tasaku leg. (KUM); 1 ♀, Esashi, Hakodate-shi, 4. vi. 1977, N. Nishikawa leg. (KUM); 1 ♀, Oakan-dake Akan N. P., 4. vii. 1986, S. Nomura leg. (KUM); 1 ♀, Akan lakeside, 3. vii. 1986, S. Nomura leg. (KUM); 1 ♁ 1 ♀, Hyotan-pond Akan N. P., 4. vii. 1986, S. Nomura leg. (KUM); 1 ♀, same data, but 25. vii. 1986 (KUM); 1 ♀, Kamishihoro, 5 – 12. vii. 1989, K. Haga leg. (KUM); 1 ♀, Koma-ga-dake, Oshima, 30. vi. 1991, S. Nomura leg. (KUM); 1 ♁, Nopporo F. P., Ebetsu-shi, 31. v. – 13. vi. 2000, S. Hori leg. (KUM); 1 ♁ 1 ♀, Niyama, Nanae-chô, 7. ix. 2020, Y. Tasaku leg. (KUM); 1 ex., Nopporo Forest, Ebetsu-shi, x. – xi. 2006, T. Lackner leg. (cSch); 1 ex., Nopporo, Shinrin Koen., Ebetsu-shi, 20. x. 2007, T. Lackner leg. (cSch); 1 ex., Nopporo Forest Park, 24. v. / 5. vi. 2008, T. Lackner leg. (cSch). HONSHU: AOMORI- KEN: 3 ♁♁ 2 ♀♀, Tomiyachi, Tsugaru-shi, 30. ix. 1992, S. Nomura leg. (KUM); 1 ♀, Toyokawa, Tsugaru-shi, 30. ix. 1992, S. Nomura leg. (KUM). IWATE- KEN: 1 ♁, Takadate Hraizumi, 2. x. 1992, S. Nomura leg. (KUM); 4 ♀♀, Yasuno, Hanamaki-shi, 2. x. 1992, S. Nomura leg. (KUM); 1 ♁ 1 ♀, Niizato, Tôno-shi, 1. x. 1992, S. Nomura leg. (KUM); 1 ♁, Ryôishi, Kamaishi-shi, 7. vi. 2016, J. Ohnishi leg. (KUM). MIYAGI- KEN: 1 ♁, Naya, Iwanuma-shi, 30. xi. 1995, S. Nomura leg. (KUM). YAMAGATA- KEN: 1 ♁ 1 ♀, Ochinome, Sakata-shi, 3. x. 1992, S. Nomura leg. (KUM). FUKUSHIMA- KEN: 1 ♁, Urabandai, 9. vii. 1985, S. Nomura leg. (KUM); 2 ♁♁ 1 ♀, Hiuchi-ga-take, Hinoemata-mura, 19. x. 1996, Y. Hagiwara et al. leg. (KUM); 1 ♁, Ochiai, Kôri-machi, 30. xi. 1995, S. Nomura leg. (KUM). IBARAKI- KEN: 1 ♁, Nakaminato, 8. iv. 1978, M. Tao leg. (KUM); 1 ♁, Iwane, Mito-shi, 1. xii. 1995, S. Nomura leg. (KUM). TOCHIGI- KEN: 2 ♁♁, Kawaji-onsen, Nikkô-shi, 30. x. 2004, K. Takahashi leg. (KUM). GUNMA- KEN: 1 ♀, Keizuru-yama, Katashina-mura, 13. vii. 1996, K. Ishii et al. leg. (KUM); 2 ♁♁ 7 ♀♀, Oze Moor, Katashina-mura, 23. x. 1994, H. Sakayori leg. (KUM). KANAGAWA- KEN: 2 ♀♀, Kawasaki-shi, 10. iv. 1977, M. Tao leg. (KUM); 2 ♀♀, Noborito Tama-gawa, 23. ix. 1996, K. Kawada leg. (KUM); 1 ♀, Zama-shi, 22. vii. 1989, N. Nishikawa leg. (KUM); 1 ♁ 2 ♀♀, Nenzaka port, Sagami-ko, Sagamihara-shi, 28. iv. 1985, K. Haga leg. (KUM). NIIGATA- KEN: 5 ♁♁ 5 ♀♀, The right bank of Uono-gawa just downstream of the bridge of Iiyama Line, Nagaoka-shi, 30. iv. 1995, K. Haga leg. (KUM); 1 ♁, Outer shore of the river island of the left side of Sinano-gawa, Ushigashima, Nagaoka-shi, 30. iv. 1995, K. Haga leg. (KUM). YAMANASHI- KEN: 1 ex., Oizumi-machi, near Yato (1300 m alt.), Hokuto-shi, 16. x. 2004, P. Jałoszyński leg. (cSch). NAGANO- KEN: 1 ♁ 1 ♀, Komoro, 21. vii. 1990, T. Takeda leg. (KUM); 1 ♁ 1 ♀, Tobira-onsen, Matsumoto-shi, 5. iv. 1993, S. Nomura leg. (KUM); 3 ♁♁ 1 ♀, Saikawabashi, Azumino-shi, 5. iv. 1993, S. Nomura leg. (KUM); 1 ex., Tachiba-zawa (1650 m alt.), Hara-mura, 15. x. 2006, P. Jałoszyński leg. (cJał). KYOTO- FU: 2 exs., Kyôto-shi, 27. iv. 1974, H. Ôishi leg. (KUM). NARA- KEN: 2 exs., 31. vii. 1980, C. Besuchet leg. (MHNG, cSch). OKAYAMA- KEN: 3 ♀♀, Wake-chô, 17. iv. 1977, S. Naomi leg. (KUM); 1 ♁, Hirose, 3. v. 1977, S. Naomi leg. (KUM). SHIKOKU: KAGAWA- KEN: 1 ♁, Minato, Minato-gawa-kako, Higashikagawa-shi, 8. x. 2012, T. Taki leg. (KUM). KYUSHU: FUKUOKA- KEN: 1 ♁ 2 ♀♀, Tenjinmori, Asakura-shi, xi. 1992, S. Nomura leg. (KUM); 1 ♀, Tanaka, 16. ii. 1992, S. Nomura leg. (KUM). MIYAZAKI- KEN: 3 ♁♁ 2 ♀♀, Miyanotani, Aya-machi, 8. ii. 1994, S. Nomura leg. (KUM); 1 ♁, Hagiwara, Miyazaki-shi, 8. ii. 1994, S. Nomura leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FF1040B703D2FB24.taxon	diagnosis	Diagnosis. Tachinus (Tachinoderus) nigriceps is similar to T. (Tachinoderus) kobensis but can be distinguished by reddish yellow pronotum and shorter sclerotized tube of inner sclerite of aedeagus. For detailed redescription, see LI (1995 b: 209, as T. nigriceps [no subspecific status]).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FF1040B703D2FB24.taxon	distribution	Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu (incl. Tsushima Is.), Yaku-shima Is.).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FF1040B703D2FB24.taxon	discussion	Remarks. The record of this species from Tsushima is doubtful. VESELOVA (2011) illustrated the aedeagus of a specimen from Tsushima that is actually the aedeagus of T. kobensis. The specimen is probably the same that has been recorded from Tsushima by ULLRICH (1975) who synonymized T. kobensis with T. nigriceps nigriceps. VESELOVA (2011) recorded this species from Kunashiri-tô, also probably due to misidentification. Two subspecies of Tachinus nigriceps are known. Tachinus nigriceps nigriceps known from Japan and surrounding islands, and T. nigriceps rubricollis Rambousek, 1921 from Far Eastern Russia, China, and South Korea. The presence (in T. nigriceps nigriceps) or absence (in T. n. rubricollis) of elytral microsculpture diagnose the subspecies. The possibility that these differences represent intraspecific variation, or that both taxa are separate species, has also been mentioned (CHANG et al. 2019). As far as we have reviewed, we identify the Japanese specimen as T. nigriceps nigriceps because it has weak microsculpture throughout the elytra.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FC9845030497F7E0.taxon	description	(Fig. 1 G)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FC9845030497F7E0.taxon	materials_examined	Material examined. JAPAN: HONSHU: GUNMA- KEN: 1 ♀, Narahara, Ueno-mura, 6. vi. 1993, Y. Nagashima leg. (KUM). GIFU- KEN: 5 ♁♁ 6 ♀♀, Hirayu, Takayama-shi, 24. viii. 1987, S. Nomura leg. (KUM). SHIZUOKA- - KEN: 1 ♀, Abe-tôge, 11. xi. 2007, S. Naomi leg. (KUM). HYOGO- KEN: 1 ♀, “ Otomizu V ” (probably Onzui-keikoku), 6. vi. 1984, S, Nomura leg. (KUM). OkAYAMA- KEN: 2 ♁♁ 1 ♀, Ushiro-yama, Mimasaka-shi, 3. v. 2003, Y. Fujitani leg. (KUM). SHIKOKU: TOKUSHIMA- KEN: 1 ♁, Tsurugi-san, 19 – 20. vi. 1981, S. Naomi leg. (KUM). KYUSHU: OITA- - KEN: 1 ♁, Kuro-dake, 15. x. 1985, A. Miyata leg. (KUM); 1 ♀, Kuro-dake, Kujyu, 28. iv. 1985. S. Nomura leg. (KUM); 3 exs., Shônaichô Asono, Yufu-shi, 1. x. 2022, T. Hashizume leg. (KUM). KUMAMOTO- KEN: 1 ♁ 1 ♀, “ Mt. Hakucho ”, 30. v. 1985, S. Nomura leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FC9845030497F7E0.taxon	diagnosis	Diagnosis. Tachinus (Tachinoderus) yamato is similar to T. (Tachinoderus) diminutus but can be distinguished by aedeagus with the left paramere equal to 3 / 4 length of the right one. For detailed description, see HAYASHI (2003: 134).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FC9845030497F7E0.taxon	biology_ecology	Biology. This species is often collected from dead trees.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FC9845030497F7E0.taxon	distribution	Distribution. Japan (Honshu, Shikoku, Kyushu).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F21FFB9FC9845030497F7E0.taxon	discussion	Remarks. This species is recorded from Shikoku and Kyushu for the first time. There are variations in the shape of the apical part of female tergite VIII.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F22FFBBFF2A40B701E7F912.taxon	description	(Fig. 1 H)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F22FFBBFF2A40B701E7F912.taxon	description	(1995 a): 62 (as a junior synonym of T. sibiricus; redescription); SCHȖLKE (2015): 8 (as valid species).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F22FFBBFF2A40B701E7F912.taxon	materials_examined	Type material studied. LECTOTYPE: ♁, “ ♁ Tachinus bidens Type D. S. Sap. Japan Lewis [at mounting card] / Syntype [round, pale blue margin] / Type [round, red margin] / Japan G. Lewis / Sharp Coll. 1905 - 313 / Tachinus sibiricus Shp. # W. G. Ullrich det. 19318 / Lectotypus Tachinus bidens Shp. # des. W. G. Ullrich 1974 19318 [red] ” (BMNH). PARALECTOTYPES: 1 ♁, “ Tachinus bidens D. S. Nikko Japan 25.8.81 Lewis [at mounting card] / Syntype [round, pale blue margin] / Japan G. Lewis 1910 - 320 / Paralectotypus Tachinus bidens Shp. ♁ des. W. G. Ullrich 1974 20942 [red] / Tachinus sibiricus Shp. ♁ W. G. Ullrich det. 20942 ” (BMNH); 1 ♀, “ ♀ Japan 25.8.81 Lewis [at mounting card] / Syntype [round, pale blue margin] / Japan G. Lewis 1910 - 320 / Paralectotypus Tachinus bidens Shp. ♀ des. W. G. Ullrich 1974 19319 [red] / Tachinus sibiricus Shp. ♀ W. G. Ullrich det. 19319 ” (BMNH). Additional material examined. JAPAN: HOKKAIDO: 10 ♁♁ 22 ♀♀, Nopporo, 12. vi. 1987, M. Ôhara leg. (KUM); 1 ♁, same data, but 14. vi. 1986 (KUM); 6 ♁♁ 5 ♀♀, same data, but 16. v. 1987 (KUM); 1 ♁, same data, but 15. ix. 1988 (KUM); 1 ex., Sapporo env., Nopporo Virgin Forest, 15. v. 2010, T. Lackner leg. (cSch); 1 ex., Nopporo Forest Park, 24. v. – 5. vi. 2008, T. Lackner leg. (cSch); 2 ♀♀, Toro-ko, Shibecha-chô, 25. vi. 1989, K. Haga leg. (KUM); 1 ♁ 1 ♀, Ashoro-chô, 30. vii. 1988, K. Haga leg. (KUM); 1 ♁, Ashoro-chô, 13. vi. 1984, O. Tadauchi leg. (KUM); 1 ♁ 1 ♀, Menashidomari (about 400 m alt.), Esashi-chô, 17. vii. 2019, K. Haga leg. (KUM); 1 ex., Otaamoi Kaigan, Otaru env., 7. viii. 2008, T. Lackner leg. (cSch). RISHIRI- T Ṏ IS.: 1 ♁, 28. vi. 1975, S. Imasaka leg. (KUM). HONSHU: AOMORI- KEN: 2 ♁♁ 3 ♀♀, Rangan-no-mori, 26 – 31. vii. 2003, Y. Kawahara leg. (KUM). IWATE- KEN: 4 ♁♁ 6 ♀♀, Kawara-bo, Hayachine-san, Hanamaki-shi, 22 – 24. vi. 1980, S. Naomi leg. (KUM). FUKUSHIMA- KEN: 1 ♁ 3 ♀♀, Kurosawahara – Korobushi-tôge, Minamiaizu-machi, 12. vi. 1993, K. Haga leg. (KUM). TOCHIGI- KEN: 1 ♀, Tashiroyama-rindô, Kuriyama-mura, Nikkô-shi, 9. vii. 1978, Ogasawara leg. (KUM); 1 ♀, Yumoto, Nikkô-shi, 29. vi. 1982, S. Naomi leg. (KUM). GUNMA- KEN: 1 ex., 4 km NW Onioshadashi Rock Garden, 21. vii. 1980, I. Löbl leg. (MHNG); 4 exs., Nikko distr., Kozawa, 1000 m, 15. viii. 1980, P. M. Hammond leg. (BMNH). NIIGATA- KEN: 2 ♁♁, the confluence of Kiyotsu-gawa and Yagio-sawa – Yagio-sawa (1000 m alt.), 23. vi. 1996, K. Haga leg. (KUM). YAMANASHI- KEN: 1 ex., Hocchoudaira, Hokuto-shi, 22 – 26. vii. 2001, T. Ueno leg. (cSch). TOKYO- TO: 1 ex., Mt. Tahao [Takao-san], 1. vi. 1952, Yoshida Wada leg. (NHMW). NARA- KEN: 1 ex., Shakagetakeyama, east side (1600 m alt.), 2. viii. 2002, BOLM leg. (SMNS). TOTTORI- KEN: 1 ♁ 1 ♀, Dai-sen, 3 – 5. vi. 1980, S. Naomi leg. (KUM). SHIKOKU: EHIME- KEN: 9 exs., Ichizuchi National Park, Tsuchigoya (1400 m alt.), 11 – 18. viii. 1980, beech-fir forest, S. & J. Peck leg. (FMNH, cSch); 17 exs., Ichizuchi National Park, Omogo valley (700 m alt.), 18 – 25. viii. 1980, warm temperated forest, traps with dung, mushrooms at mossy trunk, S. & J. Peck leg. (FMNH, cSch). KYUSHU: FUKUOKA- KEN: 1 ♀, Hiko-san, 25 – 30. vii. 1969, M. T. Chûjô leg. (KUM); 1 ♀, Naka-dake, Hiko-san, 13. x. 1992, S. Nomura leg. (KUM). OITA- KEN: 1 ♁ 1 ♀, Kuro-dake, Kuju, 19. vii. 1992, S. Ogata leg. (KUM). UNCLEAR LOCATION: 2 ♀♀, Sobo-san, 14. vii. 1976, M. Ôishi leg. (KUM) [Oita-ken / Miyazaki-ken].	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F22FFBBFF2A40B701E7F912.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) bidens can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: pronotum with distinct posterior angles; male sternite VII with a pair of large spoon-like setae at inner sides of lateral processes; female tergite VIII with four lobes. For detailed redescription, see LI (1995 a: 62).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F22FFBBFF2A40B701E7F912.taxon	distribution	Distribution. Japan (Hokkaido incl. Rishiri-tô Is., Rebun- - tô Is., Honshu, Shikoku, Kyushu), Sakhalin, Kuril Isls. This species is widely distributed in lowland and montane zones in mainland Japan.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F22FFBBFF2A40B701E7F912.taxon	discussion	Remarks. Tachinus bidens Sharp, 1888, and T. sibiricus Sharp, 1888 are very closely related. Both species differ only in slight but constant differences in body size, coloration, elytral length, and the shape and size of the field with modified setae on male sternite VII, the shape of the aedeagal apex in lateral view, and the shape of the lobes at the posterior margin of female tergite VIII. Since both species co-occur at least in southern Sakhalin, and no transitional specimens were found, a specific status of T. bidens can be assumed.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFBBFF6E46F505E8FD2F.taxon	description	(Fig. 1 I)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFBBFF6E46F505E8FD2F.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♁, Shimizudani, Kamishihoro-chô, 6. v. 1990, K. Haga leg. (KUM); 1 ♁, Horoka-takinosawa-rindô, Kamishihoro-chô, 12. viii. 1990, K. Haga leg. (KUM); 1 ♀, Kamishihoro, Kamishihoro-chô, 25. v. – 2. vi. 1989, K. Haga leg. (KUM); 1 ♀, Obihiro-shi, 19. vi. 1993, T. Hakura leg. (KUM). HONSHU: WAKAYA- MA- KEN: 2 ♁♁, Hirai, Kozagawa-chô, 12. vii. 1999, M. Maruyama leg., baited trap (banana) (KUM); 2 ♁♁, same data, but 14. vii. 1999 (KUM). KYUSHU: OITA- KEN: 1 ♁ 1 ♀, Kuro-dake, 22. iv. 2017, S. Kakizoe leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFBBFF6E46F505E8FD2F.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) bipustulatus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: elytra almost entirely black; apical end of parameres of aedeagus abruptly dilated in lateral view; inner lobes of female tergite VIII divided by shallow semisircular incision. For detailed redescription, see LI (1995 a: 57).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFBBFF6E46F505E8FD2F.taxon	biology_ecology	Biology. This species is often collected by trap using bananas as bait (ASAKI, 2013; Maruyama, pers. obs.).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFBBFF6E46F505E8FD2F.taxon	distribution	Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu), Kunashiri-tô Is., Russia, China, Kazakhstan, Europe.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFBBFF6E46F505E8FD2F.taxon	discussion	Remarks. This species was recorded from Kyushu in WA- TANABE (2021) and from Kunashiri-tô in VESELOVA (2011).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	description	(Figs 3 A – C, 3 E – L)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	materials_examined	Type material. HOLOTYPE: ♁, JAPAN: HONSHU: alt. 2530 m, Utsugidaira, Utsugi-dake, Komagane-shi, Nagano-ken, 22. vii. 2001, K. Haga leg. (KUM). PARATYPES: 2 ♀♀, same data as holotype (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	diagnosis	Diagnosis. This species can be distinguished from other Tachinus species by the combination of the shape of aedeagus, tergites, and sternites. The new species belongs to the T. rufipes group and is similar to T. rishirianus Watanabe & Shibata, 1965 in appearance. Tachinus dujieae sp. nov. can be distinguished from the latter by the following characteristics: 1) microsculpture of dorsal side of pronotum and elytra composed of finer isodiametric meshes (in T. rishirianus, microsculpture composed of wider, more broken meshes); 2) incisions between inner lobes of male sternite VIII deep; 3) inner lobes of female tergite VIII not exceeding apices of outer ones; 4) without triangular process between inner lobes of female sternite VIII; 5) apex of parameres bi-curved (in T. rishirianus, parameres abruptly thinned apically). In Japan, there are four species in the T. rufipes group (T. bipustulatus (Fabricius, 1775), T. rishirianus, T. trifidus Sharp, 1888 and T. dujieae sp. nov.). Tachinus chinensis Bernhauer, 1933, described from western Sichuan, is similar to T. dujieae sp. nov. in the appearance of aedeagus but differs in pointed center of male sternite VII.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	description	Description. Measurements (holotype (male) / paratype (female) in mm). LE: 0.28 / 0.28; TL: 0.42 / 0.47; HW: 1.07 / 1.13; HL: 0.92 / 0.93; PW: 1.97 / 2.04; PL: 1.27 / 1.29; EL: 1.62 / 1.68; ELL: 1.78 / 1.86; EW: 1.96 / 2.11; FBL: 3.75 / 4.00; BL: 5.75 / 6.50; LMtTi: 1.49 / 1.51; LMtTr: 0.97 / 0.89. Indices (holotype / paratype). LE / TL: 0.67 / 0.60; LE / HW: 0.26 / 0.25; HL / HW: 0.86 / 0.83; HW / PW: 0.54 / 0.55; HW / PL: 0.84 / 0.87; PL / PW: 0.65 / 0.63; PL / EL: 0.79 / 0.77; PW / EW: 1.01 / 0.97; ELL / EW: 0.91 / 0.88. Length ratio of antennomeres I – XI (holotype). 35: 22: 26: 18: 27: 27: 27: 26: 27: 24: 32. Ratio length / width of antennomeres I – XI (holotype). 1.3, 1.1, 1.1, 1.1, 1.3, 1.4, 1.5, 1.6, 1.7, 1.9, 2.0. Male (Fig. 3 A). Body brown, head darker, antennomeres I – IV yellowish brown, antennomeres V – XI dark brown. Head slightly transverse, without punctures, with microsculpture composed of isodiametric meshes. Eyes protruding from outline of head. Supraorbital puncture on each side small with very short seta. Antennomeres I – IV glossy, with a few longer setae, antennomeres V – XI dull. Pronotum transverse, moderately convex in cross-section, without punctures, with microsculpture as on head. Anterior and posterior angles broadly rounded. Median smooth area from basal half to basal 1 / 4 of pronotum vertically long. Scutellum triangular. Elytra slightly transverse, with indistinct fine punctation, with microsculpture as on head (Fig. 3 C). Posterior margins rounded, forming clear sutural angle. Hind wings developed. Abdomen narrowed obliquely posteriad, with fine punctation more distinct than that of elytra, with microsculpture as on head. Tergites III – IV with pruinose spots. Pruinose spots of tergite IV more elongate than those of tergite III. Tergite VIII (Fig. 3 F) with four lobes, inner lobes longer than outer ones. Sternite VII (Fig. 3 E) shallowly and broadly emarginate; field of modified setae narrow, arranged along emargination. Sternite VIII (Fig. 3 G) deeply incised between inner lobes, midlength 0.53 times as long as depth of incision, inner lobes slightly curved inward towards apices. Aedeagus (Figs 3 H – I) with parameres long, apices of parameres twice curved in lateral view. Legs moderately long. Protarsal segments I – IV dilated. Female (Fig. 3 B). Most characteristics similar to male. Protarsi slender. Meso- and metatarsi shorter than those of male. Tergite VIII (Fig. 3 J) with four lobes, inner lobes deeply separated from each other and as long as outer ones, outer incisions deeper than median one. Sternite VIII (Fig. 3 K) with short setae at central region, and with six lobes, inner lobes broader than outer lobes and apically each with several short light-colored setae. Abdominal segments IX, X and spermatheca as in Fig. 3 L. Spermatheca with intricately coiled spermathecal duct.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	etymology	Etymology. The new species is dedicated to Mrs. Du Jie, the wife of the collector of the type series, Mr. Kaoru Haga, as a reward for her support of his entomological studies.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	biology_ecology	Biology. All individuals were collected from human feces in a grassland at an altitude of 2530 m.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	distribution	Distribution. Japan (central Honshu). Tachinus dujieae sp. nov. was found only at one site in the alpine zone of central Honshu. However, since many species of the subgenus Tachinus with developed hind wings are widely distributed in mainland Japan, it is possible that T. dujieae sp. nov. may be found elsewhere in the future.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F23FFB5FC0D4329017CF8F1.taxon	discussion	Remarks. The tergite VIII and sternite VIII of all specimens have lost some of the setae that were originally thought to be present.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB5FF0347470519FCDF.taxon	description	(Fig. 1 J)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB5FF0347470519FCDF.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♀, Chiroro-dake, Hidaka-chô, 23. vii. 1993, K. Haga leg. (KUM); 1 ♁, same data, but 24. vii. 1993 (KUM); 1 ♁, Kamishihoro-eki, Kamishihoro-chô, 17 – 21. vii. 1989, K. Haga leg. (KUM); 1 ♀, Tokachi-Mitsumata, Kamishihoro-chô, 16 – 19. vii. 1997, S. Naomi leg. (KUM); 2 ♁♁, the south ridge of Upepesanke- - yama (1610 – 1700 m alt.), Kamishihoro-chô, 13. vii. 1995, K. Haga leg. (KUM); 1 ♀, head of Chisenbetsu-sawa, Kitoushi-yama (1050 m alt.), Rikubetsu-chô, 11 – 26. vii. 1992, K. Haga & K. Shibata leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB5FF0347470519FCDF.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) elongatus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: body slender, subparallel; tergites III – V with a pair of pruinose spots; parameres of aedeagus distinctly curved ventrally, not narrowed apicad in lateral view. For detailed redescription see LI (1995 a: 55).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB5FF0347470519FCDF.taxon	biology_ecology	Biology. KAMIMURA & HAYASHI (2014) reported that this species was collected by a carrion trap.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB5FF0347470519FCDF.taxon	distribution	Distribution. Japan (Hokkaido, Honshu), China, Russia, Mongolia, Caucasus, Europe, USA. This species is distributed in montane to alpine zones in mainland Japan.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB6FCAB434E0153FF30.taxon	description	(Fig. 1 K)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB6FCAB434E0153FF30.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♁ 1 ♀, Kitoushi-yama, Ashoro-chô, 3. vi. 1989. K. Haga leg. (KUM); 1 ♁ 1 ♀, same data, but 4. vi. 1989 (KUM); 1 ♀, same data, but 8. vii. 1990 (KUM); 1 ♀, Onne intake weir of Metô No. 2 power plant, Minamikitousi, Ashoro-chô, 9. vii. 1991, K. Haga leg. (KUM); 1 ♁, Nipesotsu-yama, Kamishihoro-chô, 4. viii. 1990, K. Haga leg. (KUM); 1 ♀, Inô, Asahikawa-shi, 30. iv. 1976, H. Ôishi leg. (KUM); 1 ♀, the ridge of Rakko-dake (800 – 1000 m alt.), Hiroo-chô, 3. vii. 2003, K. Haga leg. (KUM); 1 ♀, Kashiwa-gaoka-kôen, Bihoro-chô, 23. vi. 2000, Y. Yamaga leg. (KUM); 1 ♀, Nozaki, Bihoro-chô, 23. vi. 2001, Y. Yamaga leg. (KUM); 4 ♁♁ 2 ♀♀, Tomanbetsu, Nopporo, 17. v. 2000, M. Maruyama leg. (KUM). HONSHU: TOCHIGI- KEN: 1 ♀, Yumoto, Nikkô-shi, 29. vi. 1982, S. Naomi leg. (KUM); 3 exs., National Grassland Research Institute, 16. iv. 1988, S. Ohmomo leg. (SDEI, cSch). TOKYO- TO: 1 ex., VI. 1936, Y. Yano leg. (BMNH); YAMANASHI- KEN: 1 ♀, Kanayama, 21. v. 1969, K. Kanmiya leg. (KUM). NAGANO- KEN: 1 ex., Shimashima, 21. vii. 1936, Y. Yano leg. (BMNH). KYOTO- FU: 1 ex., Kibune, 22. iv. 1984, K. Ando leg. (SDEI).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB6FCAB434E0153FF30.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) gelidus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: elytra reddish brown with sutural, lateral, and posterior margins black; abdominal segments IV – VII with long lateral setae; male sternite VII with triangular arc of modified setae; female tergite VIII and sternite VIII without distinct lobes. For detailed redescription, see LI (1995 a: 55).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB6FCAB434E0153FF30.taxon	biology_ecology	Biology. KAMIMURA & HAYASHI (2014) reported that this species was collected by carrion traps.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB6FCAB434E0153FF30.taxon	distribution	Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu), Kunashiri-tô Is., South Korea, China, Russia, Mongolia.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2DFFB6FCAB434E0153FF30.taxon	discussion	Remarks. VESELOVA (2011) recorded this species from Kunashiri-tô.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2EFFB7FF14412F0099FCD1.taxon	description	(Fig. 1 L)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2EFFB7FF14412F0099FCD1.taxon	materials_examined	Material examined. JAPAN: HONSHU: AOMORI- KEN: 2 ♁♁ 1 ♀, Ôkawa-shirisawa, Kazamaura-mura, 20. viii. 2003, Y. Kawahara leg. (KUM); 16 exs., Hakkôda mountains, Kasamatsu-tôge (1000 m alt.), pitfall traps, 14. viii. 1988, H. Sawada leg. (cSch, further specimens in SDEI); 16 exs., Suiren-numa, 1000 m, Hakkôda mountains, pitfall traps, H. Sawada leg. (SDEI, cSch). IWATE- KEN: 1 ♁, Hayachine-san, 2 – 5. viii. 1982, H. Makihara leg. (KUM); 2 ♀♀, Hayachine-san, 17. vii. 1985, S. Nomura leg. (KUM). MIYAGI- KEN: 1 ♁, Daito-dake, 12. vii. 1985, K. Konishi leg. (KUM). AKITA- KEN: 2 ♁♁ 1 ♀, “ Hachimandaira ”, 12. viii. 1987, S. Nomura leg. (KUM); 1 ♁, Nyûtô-onsen, Senboku-shi, 11. vii. 1985. S. Nomura leg. (KUM). FUKUSHIMA- KEN: 1 ♀, Tashiro-yama, Minamiaizu-machi, 24. vii. 1996, S. Naomi leg. (KUM); 1 ♀, Kozodaira, Hinoemata-mura, 26. vii. 1996, S. Naomi leg. (KUM); 1 ♁, Entrance – approx. 2 km point of Mikawa-rindô, Hinoemata-mura, 2. viii. 1984, K. Haga leg. (KUM); 1 ♀, Iide-san, Kitakata-shi, 7. viii. 1997, S. Naomi leg. (KUM); 1 ♀, Sannou-tôge, Minamiaizu-machi, 12. x. 1997, S. Nomura leg. (KUM); 1 ♁, Adatara-yama, Yokomuki, 9. vii. 1985, K. Konishi leg. (KUM). IBARAKI- KEN: 1 ♀, Ogawa nat. F., Kitaibaraki-shi, 20. vi. 1981, H. Sakaguchi leg. (KUM); 2 exs., Tsukuba-san (700 – 800 m alt.), 2. vi. 2006, P. Jałoszyński leg. (cJał, cSch). TOCHIGI- KEN: 4 ♁♁, Yumoto, Nikkô-shi, 23. vii. 1985, S. Nomura leg. (KUM); 1 ♁, Chuzenji, Nikkô-shi, 24. vii. 1985, S. Nomura leg. (KUM); 1 ♁, Chuzenji, Nikkô-shi, 28 – 30. vi. 1982, S. Naomi leg. (KUM); 1 ♀, Chuzenji, 8. vii. 1994, S. Naomi leg. (KUM); 2 ♁♁, Usukubodaira, Nikkô-shi, 11. x. 1997, S. Naomi leg. (KUM); 6 exs., Nikko National Park, Ryuzu (1400 m alt.), 16. vii. 1980, I. Löbl leg. (cSch, MHNG); 1 ex., Nikko National Park, Chuzenji (1350 m alt.), 14. vii. 1980, I. Löbl leg. (MHNG); 3 exs., Nikko-Chiuzenji, 2. ix. 1934, Yoshida leg. (FMNH); 2 exs., Nikko-shi, ix. 1962, Kurosa leg. (KUM, cSch); 2 exs., Nikko Park, Osaka, (FMNH); 1 ex., Chiuzenji, 26. viii. 1928, J. E. A. Lewis leg. (BMNH); 1 ex., same data, but 23. viii. 1930 (BMNH); 1 ex., same data, but 18. vii. 1933 (BMNH); 1 ex., same data, but 20. vii. 1935 (BMNH). GUNMA- - KEN: 8 ♁♁ 32 ♀♀, “ Mt. Akakunawa ”, 6. ix. 1992, Y, Nagashima leg. (KUM); 1 ♁ 1 ♀, Shimizu-tôge, 25. vii. 1977, K. Kameda leg. (KUM); 1 ♁ 1 ♀, Hoshi-onsen, Minakami-machi, 26. vi. 1997, S. Naomi leg. (KUM); 1 ♀, Mikuni-tôge, Minakami-machi, 27. vi. 1997, S. Naomi leg. (KUM); 1 ♁ 2 ♀♀, Hotaka-yama, 9. viii. 1984, S. Ômomo leg. (KUM); 2 ♁♁ 2 ♀♀, Hotaka-yama, 25. vii. 1977, M. Tao leg. (KUM); 7 ♁♁ 4 ♀♀, Hinatani Riv. Shima Spa., 15 – 16. ix. 1996. S. Naomi & M. Maruyama leg. (KUM); 1 ♀, Nakanomatasawa-rindô, Katashina-mura, 14. vii. 1984, K. Haga leg. (KUM); 5 exs., Naganohara, 17. vii. 1980, I. Löbl leg. (cSch, MHNG); 1 ex., 4 km SW Tsumagoi (1050 m alt.), 18. vii. 1980, I. Löbl leg. (MHNG); 2 exs., Mt. Hotaka, 8. viii. 1984, Ohmomo leg. (SDEI); 3 exs., Nikko distr., Konsei-tôge (1800 – 1900 m alt.), 13. viii. 1980, P. M. Hammond leg. (BMNH); 7 exs., Nikko distr., Lake Maranuma (1430 – 1500 m alt.), 11 – 12. viii. 1980, P. M. Hammond leg. (BMNH); 4 exs., Nikko distr., Hotaka-yama (foot) (1300 m alt.), 14 – 15. viii. 1980, P. M. Hammond leg. (BMNH). SAITAMA- KEN: 1 ♀, Taki-gawa, Chichibu-shi, 15. x. 1997, M. Maruyama leg. (KUM). CHI- BA- KEN: 1 ♁ 3 ♀♀, Gongenmori, Nagara-machi, 4. vi. 1993, T. Takeda leg. (KUM); 6 ♁♁ 1 ♀, Gongenmori, Nagara-machi, 12. vi. 1993, T. Takeda leg. (KUM). TOKYO- TO: 1 ♀, The top of Mitake-san, Oume-shi, 21. vi. 1981, K. Haga leg. (KUM); 1 ♁, Kawanori-yama, (1100 m alt.), Okutama-chô, 15. vii. 1995, Shimizu & Sato leg. (KUM); 1 ex., Okutama-chô, Nippara, 31. v. 1964, Kurosa leg. (KUM). KANAGAWA- KEN: 1 ♁, Tanzawa, 27. iv. 1993, M. Nishikawa leg. (KUM); 2 ♁♁ 2 ♀♀, Nishi-Tanzawa, 27. viii. 1971, Y. Hirano leg. (KUM); 4 ♁♁ 4 ♀♀, Kamiyu, Hakone, 9. x. 1984, Y. Hirano leg. (KUM). NIIGATA- KEN: 1 ♁, Renge-onsen, Itoigawa-shi, 14. viii. 1983, S. Nomura leg. (KUM); 1 ♁ 2 ♀♀, Tsubame-shi, 2 – 4. x. 1996. K. Ishida et al. leg. (KUM); 1 ♀, Mikuni-tôge, Yuzawa-machi, 20. vii. 1996, S. Nomura leg. (KUM); 1 ♀, Yahiko-yama, 21. vi. 1986, S. Ogata leg. (KUM); 2 ♀♀, Donden-yama, Sado-shi, 16. ix. 1976, H. Ôishi leg. (KUM). TOYAMA- KEN: 1 ex., Kaminikawa, Arimine (1150 m alt.), 29. vii. 1980, I. Löbl leg. (MHNG). ISHIKAWA- KEN: 2 ♁♁, Ichinose-pass, Hakusan-shi, 28. vii. – 23. viii. 2003, K. Nakata leg. (KUM). FUKUI- KEN: 1 ♀, Kumotani-yama, Wakasa-chô, 15. vi. 1980, H. Sasaji leg. (KUM); 2 ♀♀, Arashima-dake, 19. vi. 1983, H. Sasaji leg. (KUM); 1 ♁, Taniyama, Ôno-shi, 29. vi. 1975, H. Sasaji leg. (KUM); 1 ♀, same data, but 24. vi. 1982 (KUM); 1 ♀, San-no-mine Haku-san, 30. vii. 1982, H. Sasaji leg. (KUM); 1 ♀, Haku-san, 22. vii. 1964, H. Kamiya leg. (KUM); 1 ♁ 2 ♀♀, Kohkura, Minamiechizen-chô, 14 – 18. x. 1996, K. Ishida et al. leg. (KUM). YAMANASHI- KEN: 4 ♁♁ 8 ♀♀, Kaminikkawa-tôge, Daibosatsu-rei, 15 – 18. vii. 1982, S. Naomi leg. (KUM); 1 ♁, Daibosatsu-rei, Kaminikkawa, 24. vii. 1983, S. Ômomo leg.; 1 ♁, Daibosatsu-tôge, 7. vii. 1979, M. Tao leg. (KUM); 1 ♁, Kiyosato, Yatsu-ga-take, 6. vii. 1982, S. Naomi leg. (KUM); 1 ♀, Jigokudani, Yatsu-ga-take, 8. vii. 1982, S. Naomi leg. (KUM); 1 ♁, Hirogawara, Mt. Shirane, 9 – 13. vii. 1982, S. Naomi leg. (KUM); 1 ♁, Okuniwa, Fuji-san, 21. vii. 1982. S. Naomi leg. (KUM); 1 ♁, Oshino- - mura, 12. ix. 1971, Y. Hirano leg. (KUM); 1 ♁ 1 ♀, Amari-yama (1600 m alt.), Nirasaki-shi, 8 – 9. vii. 1998, M. Maruyama leg. (KUM); 72 exs., Kitazawa-tôge, Minamiarupusu-shi, 15 – 20. vii. 2001, 28. vii. – 4. viii. 2001, T. Ueno leg. (cSch). NAGANO- KEN: 1 ♁, Nyugasa-yama, Fujimi-machi, 16. viii. 2000, M. Nishikawa leg. (KUM); 1 ♁, Yatsu-ga-take, 25. vii. 1955, M. Satô leg. (KUM); 1 ♀, Yatsu-ga-take, Shirakomaike, 20. viii. 1983, S. Nomura leg. (KUM); 7 exs., J. E. Kogen National Park, Shiga (1500 m alt.), 23. vii. 1980, I. Löbl leg. (cSch, MHNG); 10 exs., Kamikochi, Northern alps (5000 ft. alt.), 21 – 30. vii. 1939, E. Suenson leg. (ZMUK, cSch); 6 exs., Minami Alps, Todai river (1450 m alt.), 14. ix. – 16. x. 1986, S. T. Martin leg. (BMNH, cSch); 4 exs., Minami Alps, Todai river (1200 m alt.), 14. ix. – 15. x. 1986, S. T. Martin leg. (BMNH, cSch); 1 ex., Minami Alps, Kitazawa-tôge (2000 m alt.), 14. ix. – 15. x. 1986, S. J. Martin leg. (BMNH). GIFU- KEN: 1 ♁, Hirayu, 22. vii. 1981, S. Nomura leg. (KUM). SHIZUOKA- KEN: 1 ♁ 3 ♀♀, Takahachi Fuji-san, 24. viii. 1996, M. Nishikawa leg. (KUM); 1 ♁ 4 ♀♀, Kagosaka-tôge, 15. ix. 1968, Y. Hirano leg. (KUM); 1 ♁, Abe-tôge, Shizuoka-shi, 7 – 8. vii. 1990, K. Nemoto leg. (KUM); 1 ex., Amagi-tôge, Izu, 19. x. 1987, Kobayashi leg. (SDEI). MIE- KEN: 1 ♁ 1 ♀, Yunoyama-onsen, 28. ix. 1975, H. Ôishi leg. (KUM). SHIGA- KEN: 1 ex., Mikunidakeyama, E side (700 m alt.), 12. vii. 2002, BOLM leg. (SMNS). KYOTO- FU: 1 ♁, Kyôto-shi, 29. vi. 1974, H. Ôishi leg. (KUM); 1 ♁, Kibune-keikoku, 15. vi. 1958, T. Kishii leg. (KUM); 3 exs., Mt. Daihi, 23. vi. 1951, Y. Wada leg. (NHMW); 1 ex., Ashi, Kyoto, vi. 1952, (MNB); 1 ex., Sasari Pass, 6. vii. 1985, K. Ando leg. (SDEI). OSAKA- FU: 1 ex., Kongosan, 2 km E Amami (300 m alt.), 17. vi. 2002, BOLM leg. (SMNS); 1 ex., Mt. Minoo (Osaka), 25. viii. 1946, T. Matsuda leg. (NHMW). NARA- KEN: 7 ♁♁ 5 ♀♀, Ohdaigahara, 25 – 26. vi. 1981, S. Naomi leg. (KUM); 3 ♁♁ 3 ♀♀, same data, but 26. vi. 1981 (KUM); 2 ♁♁, Ohdaigahara, 14. vii. 1981, H. Nishino leg. (KUM); 1 ♁, Wasamata-yama, Kamikitayama-mura, 11. vii. 1999, M. Maruyama leg. (KUM); 1 ♁ 1 ♀, Tenkawa-mura, 28 – 29. viii. 1985, K. Kubota leg. (KUM); 1 ex., Asahi river valley, 1000 m, 9. vi. 2002, BOLM leg. (SMNS); 2 exs., Wasamatayama, E side, 1400 m, 15. vi. 2002, BOLM leg. (SMNS, cSch); 1 ex., Mt. Odaigahara, 21 – 22. vi. 2003, BOLM leg. (SMNS); 1 ex., Kashiwagi, 19 – 24. vi. 1881, G. Lewis leg. (BMNH). WAKAYAMA- KEN: 1 ♀, Gomanodan-zan, 22 – 23. vi. 1981, S. Naomi leg. (KUM). TOTTORI- KEN: 2 ♁♁, Takahachi-yama, 27. vi. 1977, M. Kaneda leg. (KUM); 4 ♁♁ 2 ♀♀, Takahachi-yama, 3. x. 1976, O. Yamaji leg. (KUM); 1 ex., same data, but 13. vi. 1976 (KUM); 1 ♁ 1 ♀, Takahachi-yama, 3. x. 1976, Watanabe leg. (KUM); 1 ♁, Hôki-Dai-sen, 12. vi. 1976, S. Naomi leg. (KUM); 1 ♁, Dai-sen, 13. x. 1987, K. Yahiro leg. (KUM); 1 ♁, Tottori University. 10. x. 1987, M. Ôhara leg. (KUM); 2 exs., Dai-sen, 1. vii. 1951, S. Shibanai coll., (NHMW). SHIMANE- KEN: 1 ♁, Urahikimi, 6. vi. 1988, S. Nomura leg. (KUM). OKAYAMA- KEN: 2 ♁♁, Kamisaibara, Kagamino-chô, 1. vii. 1973, Watanabe leg. (KUM); 1 ♁, Taki-yama, 15. vi. 1975, O. Yamaji leg. (KUM); 1 ♁, same data, but 11. vi. 1977 (KUM). HIROSHIMA- KEN: 2 ♀♀, Saijyo, 22. ix. 1984, M. Yoshida leg. (KUM). YAMAGUCHI- KEN: 22 exs., Saba-gun, Tokuji-chô, Nodani, FIT, 22. v. 2004, Fujitani leg. (KUM, cSch). UNCLEAR LO- CATIONS: 1 ex., Mt. Fuji, 1. vii. 1970, K. Masumoto, (cSch) [Yamanashi-ken / Shizuoka-ken]; 6 exs., Yamato, Ôdaigahara, 19. vii. 1981, 16. ix. 1984, leg. K. Ando, (SDEI, cSch) [Nara-ken / Mie-ken].	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2EFFB7FF14412F0099FCD1.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) japonicus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: body large, almost dark brown; male tergite VIII with four lobes, outer lobes undefinite; female sternite VIII with three lobes, each lobe broad and separated by very narrow incisions. This species is similar to T. (Tachinus) obesus, but can be distinguished by slenderer parameres of aedeagus and broader lobes of female tergite VIII. For detailed redescription, see LI (1995 a: 64).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2EFFB7FF14412F0099FCD1.taxon	biology_ecology	Biology. This species is commonly found around mushrooms in montane zones.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2EFFB7FF14412F0099FCD1.taxon	distribution	Distribution. Japan (Hokkaido, Honshu incl. Sado-ga- - shima Is., Awa-shima Is., Oki Isls., Shikoku, Kyushu). This species is distributed in montane to subalpine zones in mainland Japan.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2EFFB7FF14412F0099FCD1.taxon	discussion	Remarks. Tachinus japonicus and T. obesus were confused before ITO (1993) explained the difference between these species.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF0C4334016BF991.taxon	description	(Fig. 2 A)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF0C4334016BF991.taxon	materials_examined	Material examined. JAPAN: HONSHU: AOMORI- KEN: 1 ♁ 1 ♀, Rangan-no-mori, Ajigasawa-machi, 26 – 31. vii. 2003, Y. Kawahara leg. (KUM). MIYAGI- KEN: 1 ♀, Futakuchi-kyôkoku, 12. vii. 1985, S. Nomura leg. (KUM). TOKYO- TO: 1 ♀, Mitake, 19. viii. 1978, M. Tao leg. (KUM). KYUSHU: KUMAMOTO- KEN: 1 ♀, Kitamuki-yama, Aso, 7. viii. 1962, H. Aramaki leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF0C4334016BF991.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) javanus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of following characters: forebody without microsculpture; male sternite VII without clusters of modified setae; apices of parameres of aedeagus modified into broad hook. For detailed redescription, see LI (1995 b: 204) (as T. shibatai).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF0C4334016BF991.taxon	distribution	Distribution. Japan (Honshu, Shikoku, Kyushu), South Korea, China, Russia, India, Oriental Region.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF0C4334016BF991.taxon	discussion	Remarks. This species was recorded from Kyushu in IMASAKA et al. (2018) and from South Korea in JEONG & AHN (2018).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	description	(Figs 4 A – I)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♀, Kitoushi-yama, Ashoro-chô, 4. vi. 1989, K. Haga leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	diagnosis	Diagnosis. This species is relatively small among members of the subgenus Tachinus in Japan. The body is generally dark brown but posterior margins of pronotum and tergites and lateral and posterior marginal area of elytra are paler. Male sternite VII (Fig, 2 C) is deeply emarginate at apical margin with coarsely distributed modified setae around emargination. Each apex beside emargination of male sternite VII is protruded. The parameres are curved ventrally at apex and exceed apex of median lobe of aedeagus. For detailed redescription, see FENG et al. (2010: 612).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	distribution	Distribution. Japan (Hokkaido), Kunashiri-tô Is., China, Russia, Mongolia.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	discussion	Remarks. This species belongs to the T. addendus group. It is recorded from Japan for the first time. Tachinus (Tachinus) kinoshitai Li, 1995 [Japanese name: Kinoshita-marukubi-hanekakushi] (Fig. 2 B)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	materials_examined	Type material studied. PARATYPES: 1 ♁ 1 ♀,. N. P., Tsuchigoya, Ishizuchi-san, Ehime-ken, Japan, 11 – 18. viii. 1980, S. & J. Peck leg (KUM). Additional material examined. JAPAN: HONSHU: YAMANASHI- KEN: 1 ♀, Yanagisawa-tôge (1500 m alt.), Tabayama-mura, 28. iv. – 3. v. 2004, FIT, Nomura leg. (KUM). SHIKOKU: EHIME- KEN: 2 exs., N. P., Tsuchigoya, Ishizuchi-san, 11 – 18. viii. 1980, S. & J. Peck leg. (cSch).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) kinoshitai can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: elytra black with basal 2 / 3 reddish yellow; male tergite VIII with three indistinct lobes; female tergite VIII with three long lobes. For detailed description, see LI (1995 a: 60). This species belongs to the T. contortus group and can be distinguished from other members of this group by the combination of the elytral coloration and microsculptured pronotum.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	biology_ecology	Biology. This species has been collected by bait-traps of banana, dung cup traps, and carrion traps (LI 1995 a).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB7FF094667049FFB16.taxon	distribution	Distribution. Japan (Honshu, Shikoku).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB1FCBD44F10285F7E4.taxon	description	(Fig. 2 C)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB1FCBD44F10285F7E4.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 3 ♁♁, the left bank of Ofuntarumanai-gawa (240 – 320 m alt.), Esashi-chô, 27. vii. 2018, K. Haga leg. (KUM); 1 ♁, Hakodate, 13. v. 1971, Y. Hirano leg. (KUM); 1 ♁, Nemuro Shibetsu, 18. vii. 1977, S. Naomi leg. (KUM); 1 ♀, Koma-ga-dake, Oshima, 30. vi. 1991, S. Nomura leg. (KUM); 1 ♀, Minami-kitoushi, Ashoro-chô, 9. viii. 1991, K. Haga leg. (KUM); 2 ♁♁, Onne intake weir of Metô No. 2 power plant, Minamikitousi, Ashoro-chô, 9. vii. 1991, K. Haga leg. (KUM); 1 ♁, the point where 5 - no-sawa flows into Nukabira-ko, Kamishihoro-chô, 9. vii. 2005, K. Haga leg. (KUM); 1 ♀, Chitose-shi, 1. viii. 1994, Y. Hagino leg. (KUM); 1 ♀, Yûbetsu-gawa, Engaru, 27. vii. 1999, S. Ômomo leg. (KUM); 2 ♁♁ 1 ♀, Ôsawaguchi, Nopporo-shinrin-kôen, Ebetsu-shi, 30. VI – 13. vii. 1993, S. Hori leg. (KUM); 1 ♁, Nopporo, Ebetsu-shi, 17. v. 2000, M. Maruyama leg. (KUM); 1 ♁, Nopporo F. P., Ebetsu-shi, 5. vii. 2000, S. Hori leg. (KUM); 1 ♀, same data, but 5 – 11. vii. 2000 (KUM); 1 ♁, same data, but 19 – 28. x. 2000 (KUM); 1 ♀, Nopporo Forest Park, Ebetsu-shi, 24. vii. 2001, S. Hori leg. (KUM); 1 ♀, same data, but 10. x. 2001 (KUM); 1 ♀, same data, but 24. x. 2001 (KUM); 5 exs., Nopporo Forest, Ebetsu-shi, x. – xi. 2006, T. Lackner leg. (cSch); 1 ex., Nopporo Forest Park, Sapporo-shi, 28. iv. 2007, T. Lackner leg. (cSch); 1 ex., Nopporo, 7. vi. 2008, T. Lackner leg. (cSch); 1 ex., Sapporo env., Nopporo Virgin Forest, x. 2009, T. Lackner leg. (cSch); 6 ex., Nopporo Virgin Forest, Sapporo env., x. 2008, T. Lackner leg. (cSch); 2 ♁♁, Toyama, Minami-ku, Sapporo-shi, 11. vii. 2020, Y. Tasaku leg. (KUM); 1 ♀, Hakken-zan, Toyama, Minami-ku, Sapporo-shi, 4. xi. 2020, Y. Tasaku leg. (KUM); 1 ex., Maruyama Park, Sapporo-shi, 8. vii. 2006, T. Lackner leg. (cSch); 2 exs., Hakodate, 9. xi. 1967, 21. xi. 1967, Savolainen leg. (FMH); 2 exs., Hakodate 10. ix. – 9. x. 80, G. Lewis leg. (BMNH). HONSHU: IWATE- KEN: 1 ♁, Kawara-bo, Hayachine-san, 22 – 24. vi. 1980, S. Naomi leg. (KUM); 2 ♀♀, The confluence of Noromeki-zawa, headstream of Ô-kawa, Yomogihara, Iwaizumi-chô, 12 – 13. ix. 1998, K. Haga leg. (KUM). FUKUSHIMA- KEN: 1 ♁ 1 ♀, Hiuchi-ga-take, 19. x. 1996, Y. Hagiwara et al. leg. (KUM). IBARAKI- KEN: 1 ex., Toride, Tone Fluss, 2. vi. 1994, N. Ito leg. (SDEI); 3 exs., Vicinity of Tsukuba City, Barber traps, 26. v. 2002, P. Jałoszyński leg. (cJał, cSch); 6 exs., Vicinity of Tsukuba-san (50 – 100 m alt.), Barber traps with fish, 20. iii. – 2. iv. 2006, P. Jałoszyński leg. (cJał, cSch). TOCHIGI- KEN: 1 ♁ 2 ♀♀, Yumoto, Nikkô-shi, 25. vii. 1985, S. Nomura leg. (KUM); 11 exs., Oku-Nikko, riverbank and park, 29. v. 1999, V. Puthz leg. (cSch); 1 ex., Nikko National Park, Chuzenji (1350 m alt.), 14. vii. 1980, I. Löbl leg. (MHNG); 1 ex., Nikko National Park, Ryuzu (1400 m alt.), 16. vii. 1980, A. & Z. Smetana leg. (cSch). GUNMA- KEN: 1 ♀, Mihara-tôge, Ozegahara, 24. vii. 1995, H. Tamura leg. (KUM); 2 ♁♁, Ozegahara, Katashina-mura, 2. ix. 1995, H. Tamura leg. (KUM); 1 ♁, Ozegahara Marsh, 23 – 24. viii. 1996, Kyushu Univ. leg. (KUM); 3 ♁♁ 7 ♀♀, Shibutsu-san, Katashina-mura, 8. ix. 1996, Y. Hagino et al. leg. (KUM); 2 exs., ca. 7 km SE Takasaki, 36 ° 17 ′ 40 ″ N, 139 ° 05 ′ 24 ″ E, 16. xi. 2002, 10. xi. 2002, (cOsh); 1 ex., above Marunuma (1350 m alt.), deciduous forest, 30. vii. 1999, V. Puthz leg. (cSch). CHIBA- KEN: 1 ♀, Naruyama, Yotsukaidô-shi, 8. xi. 1992, T. Takeda leg. (KUM); 3 ♀♀, same data, but 30. v. 1993 (KUM); 4 ♁♁ 3 ♀♀, Nagarayama, Nagara-machi, 14. xi. 1992, T. Takeda leg. (KUM); 2 ♁♁, Aoba-chô, Chiba-shi, 31. i. 1994, Y. Hagino leg. (KUM); 1 ♀, Kashiwai, Chiba-shi, 5. iv. 1997, S. Nomura leg. (KUM); 1 ♁, Noda-shi, 12. xi. 1989, T. Takeda leg. (KUM); 1 ♁, Abiko-shi, 26. xi. 1989, T. Takeda leg. (KUM); 3 ♁♁ 1 ♀, Kaneoya-chô, Onari-kôen, Chiba-shi, T. Takeda leg. (KUM); 1 ♁ 1 ♀, the ruins of livestock experiment station, Chiba-shi, K. Nemoto leg. (KUM); 14 ♁♁ 7 ♀♀, Yata, Shiroi-shi, 14. xi. 1989, T. Takeda leg. (KUM); 2 ♀♀, Saijô, Kamogawa-shi, 4. i. 1990, T. Takeda leg. (KUM); 4 ♁♁ 1 ♀, Tôjô-kaigan, Kamogawa-shi, 4. i. 1990, T. Takeda leg. (KUM); 3 ♁♁ 1 ♀, Toyotomi, Funabashi-shi, 14. xi. 1989, T. Takeda leg. (KUM); 1 ♁, Funabashi-shi, 29. v. 1990, T. Takeda leg. (KUM). TOKYO- TO: 6 exs., Mt. Tahao [Takao-san] 1. vi. 1952, Y. Wada leg. (NHMW); 1 ex., Tokyo, (BMNH); 1 ex., Sawai Okutama Tokyo, 8. vi. 1936, Y. Yano leg. (BMNH). MIKURA- JIMA: 10 ♁♁ 10 ♀♀, Sato-Kurosaki, 6. vi. 1996, S. Naomi & M. Maruyama leg. (KUM); 5 ♁♁ 2 ♀♀, O-yama, 7. vi. 1996, S. Naomi & M. Maruyama leg. (KUM); 8 ♁♁ 10 ♀♀, Sato-Kawada, 8. vi. 1996, S. Naomi & M. Maruyama leg. (KUM). KANAGAWA- KEN: 1 ♀, Tsurumi, Yokohama-shi, 16. v. 1987, M. Tao leg. (KUM); 1 ♀, Midori-ku, Yokohama-shi, 5. v. 1987, M. Tao leg. (KUM); 1 ♀, Tanzawa, 21. vi. 1987. M. Tao leg. (KUM); 1 ♁, Shimosha – the top of Ô-yama, Isehara-shi, 21. iv. 1985, K. Haga leg. (KUM); 1 ♀, Uchiyama, Minamiashigara-shi, 30. vi. 2009, J. Aoki leg. (KUM); 1 ex., Kanagawa, Sauter leg. (FMNH); 3 exs., Nishi-Tanzawa, 9. xi. 2002, P. Jałoszyński leg. (cJał, cSch). NAGANO- KEN: 6 ♁♁ 3 ♀♀, Meshimori-yama, Kiyosato, 21. vii. 1997, T. Gomi leg. (KUM); 1 ♁, Shimashimadani, 27. vii. 1980. H. Takemoto leg. (KUM). KYOTO- FU: 2 exs., Myadzu / Myaden, Schneider [= Miyazu?], (FMNH). HYOGO- KEN: 1 ♀, Mikuma-yama, Awaji-shima, Hyôgo-ken, 3. vi. 1978, Kameda leg. (KUM); 1 ex., Kobe, Harada, 1. iv. 1913, (BMNH). OKAYAMA- KEN: 1 ♀, Gagyu-zan, 6. vi. 1976, S. Naomi leg. (KUM); 1 ♁, same data, but 29. v. 1977 (KUM); 1 ♀, Kamisaibara, 10. x. 1977, Kameda leg. (KUM). ATTRIBUTION QUESTIONABLE: 1 ex., Japan, G. Lewis leg. (FMNH).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB1FCBD44F10285F7E4.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) mimulus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: body small; lateral and posterior margins of pronotum and those of elytra yellow; male sternite VII with three patches and a row of granules; female tergite with undivided broad inner lobe. For detailed redescription, see LI (1995 a: 71).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB1FCBD44F10285F7E4.taxon	biology_ecology	Biology. Specimens are often collected from leaf litter.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB1FCBD44F10285F7E4.taxon	distribution	Distribution. Japan (Hokkaido (incl. Rishiri-tô Is.), Honshu (incl. Sado-ga-shima Is., Awaji-shima Is.), Izu-shotô Isls. (Mikura-jima Is.), Shikoku, Kyushu). This species is distributed in lowland and montane zones in mainland Japan.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2FFFB1FCBD44F10285F7E4.taxon	discussion	Remarks. This species belongs to the T. addendus group.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F29FFB2FCBC40B7013EFCE4.taxon	description	(Fig. 2 D)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F29FFB2FCBC40B7013EFCE4.taxon	materials_examined	Material examined. JAPAN: HOKKAIDO: 1 ♁, Kitoushi-yama, Ashoro-chô, 4. vi. 1989, K. Haga leg. (KUM); 1 ♁, remains of Kamishihoro Station, Kamishihoro-chô, 8 – 16. v. 1989, K. Haga leg. (KUM); 1 ♁ 1 ♀, Tomanbetsu, Nopporo-shinrin-kôen, Ebetsu-shi, 4. v. 2000, H. Sugaya leg. (KUM); 1 ♀, Nopporo F. P., Ebetsu-shi, 19 – 26. vii. 2000, S. Hori leg. (KUM); 1 ♁, Nopporo Forest Park, Ebetsu-shi, 6. v. 2001, S. Hori leg. (KUM); 1 ♁, Hakken-zan, Sapporo-shi, 1. vi. 2002, M. Maruyama leg. (KUM); 1 ♀, Sumikawa, Minami-ku, Sapporo-shi, 7. v. 2020, Y. Tasaku leg. (KUM); 1 ♁, same data, but 18. v. 2020 (KUM). HONSHU: AOMORI- - KEN: 1 ♀, Tsuta-onsen, Towadako, 6. viii. 1987. S. Nomura leg. (KUM). YAMAGATA- KEN: 2 ♁♁, Futamata, Asahi-dake, 21. viii. 1996, S. Naomi leg. (KUM). FUKUSHIMA- KEN: 2 ♀♀, Bottom of Oniana-doline, Sendaihira, Tamura-shi, 12 – 13. vi. 1996, K. Haga leg. (KUM). IBARAKI- KEN: 1 ♀, Inashiki, 29. iv. 1983, S. Ômomo leg. (KUM); 1 ♀, Yamizo-san, Daigo- - machi, 10. iv. 2004, S. Ômomo leg. (KUM). TOCHIGI- KEN: 1 ♀, Yumoto, Nikkô-shi, 26. vi. 1982, S. Nagashima leg. (KUM); 1 ♁ 1 ♀, Yumoto, Nikkô-shi, 29. vi. 1982, S. Naomi leg. (KUM); 2 ♁♁ 3 ♀♀, Chuzenji, Nikko, 28 – 30. vi. 1982, S. Naomi leg. (KUM); 2 ♀♀, Nasu-dake, 3. vi. 1994, S. Naomi leg. (KUM); 1 ♁, Nikko National Park, Ryuzu (1400 m alt.), 16. vii. 1980, A. & Z. Smetana leg. (cSch, further specimens in cSme). GUNMA- KEN: 1 ♁, “ Hinatani Riv., Shima Spa. ”, 15 – 16. ix. 1996, S. Naomi & M. Maruyama leg. (KUM); 1 ♁, The lakeside of Ô-numa, Akagi-san, 31. viii. 1996, T. Takeda leg. (KUM); 1 ♀, Mikuni-tôge – the headstream of Jigokuzawa, Minakami-machi, 28. v. 1995, K. Haga leg. (KUM); 1 ex., Nikko National Park, Konsei-tôge (1500 m alt.), 15. vii. 1980, I. Löbl leg. (MHNG); 2 exs., Nikko distr., Konsei-tôge (1800 – 1900 m alt.), 13. viii. 1980, P. M. Hammond leg. (BMNH); 3 exs., Nikko distr., L. Maranuma (1430 – 1500 m alt.), 11 – 12. viii. 1980, P. M. Hammond leg. (BMNH); 1 ex., Nikko distr., Kozawa (1000 m alt.), 15. viii. 1980, P. M. Hammond leg. (BMNH); 3 exs., Nikko distr., Hotaka-yama (foot) (1300 m alt.), 14 – 15. viii. 1980, P. M. Hammond leg. (BMNH); 1 ♀, above Marunuma (1350 m alt.), deciduous forest, 30. vii. 1999, V. Puthz leg. (cSch). SAITAMA- KEN: 2 ♁♁, Karisaka, Chichibu-shi, 30. v. 1997, S. Naomi leg. (KUM). KANAGAWA- KEN: 1 ♀, Kohoku-ku, Yokohama-shi, 4. iv. 1987, M. Tao leg. (KUM); 1 ♁ 1 ♀, Kamiyu-Hakone, 23 – 24. iv. 1997, S. Naomi leg. (KUM); 1 ♀, Near Ô-yama cable-station, Ô-yama, Isehara-shi, 8. v. 1984, K. Haga leg. (KUM). NIIGATA- KEN: 1 ♀, Mukô-yama (1000 m alt.), Yuzawa-machi, 3. vi. 1995, K. Haga leg. (KUM). TOYAMA- KEN: 1 ex., Kaminikawa, Arimine, 29. vii. 1980, I. Löbl leg. (MHNG). YAMANASHI- - KEN: 1 ♁, Daibosatsu, 23. vi. 1985, M. Tao leg. (KUM); 2 ♀♀, same data, but 12. viii. 1978 (KUM); 1 ♀, Daibosatsu-tôge, 9. vi. 1979, M. Tao leg. (KUM); 1 ♁ 1 ♀, Kaminikkawa-tôge, Daibosatsu-rei, 15 – 18. vii. 1982, S. Naomi leg. (KUM); 2 ♀♀, Kiyosato, Yatsu-ga-take, 6. vii. 1982, S. Naomi leg. (KUM); 1 ♀, Jigokudani, Yatsu-ga-take, 8. vii. 1982, S. Naomi leg. (KUM); 1 ♁ 1 ♀, Sanjonoyu, Tabayama-mura, 4. v. 1996, M. Maruyama leg. (KUM); 1 ex., Yanagisawa-tôge (1500 m alt.), Tabayama-mura, 28. iv. – 3. v. 2004, FIT, Nomura leg. (KUM). NAGANO- KEN: 1 ♀, Yatsu- - ga-take, 6. vi. 1982 (KUM); 1 ♁ 1 ♀, Nyûkasa-yama, 12. v. 1979, M. Tao leg. (KUM); 2 ♁♁ 1 ♀, Norikura-dake, Matsumoto-shi, 20. viii. 1996, S. Nomura leg. (KUM); 4 ♁♁, Mineno-chaya, Karuizawa, 19. viii. 1996, S. Nomura leg. (KUM); 1 ex., Mt. Iwasuga near Hasuike, H. Franz leg., 1974 (NHMW). MIE- KEN: 1 ♀, the east face of Sanzukôochi-yama, Ôdaigahara (1500 m alt.), Ôdai-chô, 9. vi. 1985, K. Haga leg. (KUM). NARA- KEN: 1 ♀, Ohdaigahara, 29. v. 1985, S. Nomura leg. (KUM); 3 ♁♁ 2 ♀♀, same data, but 30. v. 1985 (KUM). TOTTORI- KEN: 1 ♁ 1 ♀, Dai-sen, 3 – 5. v. 1980, S. Nomura leg. (KUM); 2 ♁♁ 2 ♀♀, same data, but 24. v. 1985 (KUM); 1 ♁ 1 ♀, Dai-sen, 22. v. 1985, S. Nomura leg. (KUM). OKAYAMA- KEN: 1 ♁, Mumyôdani, Niimi-shi, 18. v. 2003, Y. Fujitani leg. (KUM); 3 exs., Takiyama (500 – 700 m alt.), Katsuta-gun, Nagi-chô, litter sifted, 13. iv. 2003, Fujitani leg. (KUM, cSch). SHIKOKU: EHIME- KEN: 1 ♁, Odamiyama, 11. vii. 1994, E. Yamamoto leg. (KUM). KYUSHU: FUKUOKA- KEN: 1 ♁ 1 ♀, Tachibana-yama, 21. vii. 1986, S. Naomi leg. (KUM); 1 ♀, Soeda, sifted, 14. v. 2006, T. Lackner leg. (cSch). NAGASAKI- KEN: 1 ♀, Unzen-dake, 3. iv. 1979, S. Imasaka leg. (KUM). TSUSHIMA IS.: 1 ♀, Kamiagatamachi Sagohigashisato, Tsushima-shi, 18. vi. 2022, T. Hashizume leg. (KUM). KUMAMOTO- KEN: 1 ♀, Shiratori-yama, 5. iv. 1987, S. Nomura leg. (KUM). OITA- KEN: 4 ♁♁ 4 ♀♀, Kuro-dake, Kujû, 28. iv. 1986, S. Nomura leg. (KUM); 1 ♁, same data, but 29. iv. 1986 (KUM); 1 ♁, Kuro-dake, Kujû, 9. v. 1985, R. Noda leg. (KUM). MIYAZAKI- KEN: 1 ♀, Ryonan, 10. v. 1985, S. Nomura leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F29FFB2FCBC40B7013EFCE4.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) nakanei can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: pronotum and elytra with long setae; humeral area of elytra reddish yellow to reddish brown; male sternite VII with two separate fields of modified setae. For detailed redescription, see LI (1995 b: 206).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F29FFB2FCBC40B7013EFCE4.taxon	biology_ecology	Biology. This species is often collected from leaf litter.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F29FFB2FCBC40B7013EFCE4.taxon	distribution	Distribution. Japan (Hokkaido, Honshu (incl. Oki Isls.), Shikoku, Kyushu (incl. Tsushima Is. )). This species is distributed in lowland to subalpine zones in Japan.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F29FFB2FCBC40B7013EFCE4.taxon	discussion	Remarks. This species is recorded from Tsushima Island for the first time.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB2FF2A4343053FFDEF.taxon	description	(Fig. 3 E)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB2FF2A4343053FFDEF.taxon	materials_examined	Material examined. JAPAN: HONSHU: YAMANASHI- KEN: 1 ♁, Premises of the University of Tokyo Yamanaka Seminar House, the western side of Yamanaka-ko, Yamanakako-mura, 10. ix. 1981, K. Haga leg. (KUM); 1 ♁, Kamiyoshida, Fujiyoshida-shi, 25. ix. 2022, N. Tsuji leg. (KUM). SHIKOKU: TOKUSHIMA- KEN: 1 ♁, Tsurugi-san, 19 – 20. vi. 1981, S. Naomi leg. (KUM); 1 ♁, Tsurugi-san, 17. viii. 1971, A. Watanabe leg. (KUM). KAGAWA- KEN: 1 ♁, Mizushi, Toramaru-yama, Shingû-ike, Higashikagawa-shi, 11 – 17. v. 2012, Sanbonmatsu High School leg. (KUM). EHIME- KEN: 1 ♁, Omogokei, Kumakôgen-chô, 15. vi. 1981, S. Naomi leg. (KUM); 1 ♁, Ishizuchi-san, 28. vii. – 2. viii. 1988, K. Nemoto leg. (KUM); 2 exs., Ichizuchi National Park, Tsuchigoya (1400 m alt.), 11 – 18. viii. 1980, beech-fir-forest, Malaise trap, S. & J. Peck leg. (cSch, fürther specimens in FMNH); 1 ex., Ishizuchi-san, 4. vi. 1952, Y. Wada leg. (NHMW). KYUSHU: FUKUOKA- KEN: 2 ♁♁ 2 ♀♀, Inunaki-yama, Miyawaka-shi, 22. v. 1980, T. Gotô leg. (KUM); 2 ♁♁, Tachibana-yama, Fukuoka-shi, 27. xi. 1983, S. Naomi leg. (KUM); 1 ♁, same data, but 7. v. 1980 (KUM); 1 ♁, Hiko-san, 7. vii. 1970, K. Takeno leg. (KUM); 1 ♁ 1 ♀, Hiko-san, 19. ix. 1974, M. T. Chûjô leg. (KUM); 1 ♀, Fukakura-kyô, Soeda-machi, 26. v. 1976, H. Ôishi leg. (KUM); 2 ♀♀, Kusenbui-Yama, 13. v. 2014, K. Kido leg. (KUM); 1 ♀, same data, but 9. vi. 2014 (KUM); 1 ♁ 1 ♀, same data, but 19. vi. 2014 (KUM). SAGA- KEN: 1 ♀, Sefuri-san, 3. x. 1976, H. Ôishi leg. (KUM); 1 ♀, Oku-Hiratani, Kashima-shi, 18. v. 1975, Y. Eguchi leg. (KUM); 1 ♁, Kyô-ga-take, 10. x. 1981, S. Nomura leg. (KUM); 2 ♀♀, Kyô-ga-take, 3. v. 1976, H. Ôishi leg. (KUM); 1 ♀, Ryûmon-kyô, 23. x. 1977, Ôishi leg. (KUM). NAGASAKI- KEN: 1 ♀, Tashirobaru, 3. xi. 1976, S. Imasaka leg. (KUM); 5 ♁♁ 5 ♀♀, Unzen-dake, 24 – 25. ix. 1983, M. Chûjô leg. (KUM); 1 ♀, Unzen-dake, 3. xi. 1976, S. Imasaka leg. (KUM); 1 ♁ 2 ♀♀, same data. but 28. ix. 1979 (KUM); 1 ♀, same data, but 30. x. 1979 (KUM); 1 ♀, same data, but 10. vi. 1980 (KUM); 2 ♀♀, same data, but 29. ix. 1981 (KUM); 1 ♀, Unzen-dake, 6. vi. 1977, S. Imasaka leg. (KUM); 2 ♀♀, same data, but 18. x. 1977 (KUM); 1 ♁, Akamatsudani, Shimabara, Shimabara-shi, 27. x. 1978, S. Imasaka leg.; 2 ♁♁, same data, but 10. x. 1979 (KUM); 3 ♁♁ 1 ♀, Nagasaki (KUM); 1 ♁, Nagasaki 22. v. – 3. vi. 81, G. Lewis leg. (BMNH). KUMAMOTO- KEN: 2 ♁♁ 2 ♀♀, Kikuchi-keikoku, Kikuchi-shi, 26. ix. 1982, M. Matsuzaki leg. (KUM); 1 ♁, Kikuchi-keikoku, Kikuchi-shi, 17. v. 1997, S. Nomura leg. (KUM); 1 ♁ 1 ♀, Shiratori-yama, 19. vi. 1988, S. Ogata leg. (KUM); 1 ♀, “ Mt. Hakucho Gokanosho ”, Yatsushiro-shi, 26. viii. 1983, H. Takemoto leg. (KUM). OITA- KEN: 1 ♁ 1 ♀, Kuro-dake, Kujû, 17. vi. 1990, S. Ogata leg. (KUM); 1 ♀, Kuro-dake Kujû, 5. vii. 1997, S. Ogata leg. (KUM); 3 ♀♀, Kujû Kuro-dake, 3. x. 1983, R. Noda leg. (KUM); 1 ♁ 2 ♀♀, Chôjabaru Kujû, Kokonoe-machi, 8. ix. 1987, Y. Abe leg. (KUM); 2 exs., “ Mujyu San ” (probably Kujû), Kuro-dake, 26. vi. 1993, S. Ohmomo leg. (cSch).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB2FF2A4343053FFDEF.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) obesus is similar to T. (Tachinus) japonicus, but can be distinguished by broader parameres of aedeagus and slenderer lobes of female tergite VIII. For detailed redescription, see LI (1995 a: 66). Biology. In western mainland Japan, this species is commonly found around mushrooms in montane zones. Distribution. Japan (Honshu, Shikoku, Kyushu).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB3FC6245F5028CFE31.taxon	description	(Fig. 2 G)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB3FC6245F5028CFE31.taxon	materials_examined	Type material studied. PARATYPE: 1 ♀, Nakatsuta, Sanmu-shi, Chiba-ken, Japan, 25. xi. 1990, T. Takeda leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB3FC6245F5028CFE31.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) subterraneoides can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: eyes small, female tergite VIII with four long lobes; female sternite with six slender lobes, each lobe approximately of the same length. This species is similar to T. (Tachinus) subterraneus (Linnaeus, 1758), distributed in Europe, Russia, and Canada, but can be distinguished by lighter coloration, almost straight outer lobes of female sterite VIII, and spermatheca with greater number of coils of spermathecal duct. For detailed description, see SCHȖL- KE & HASHIZUME (2021: 75).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB3FC6245F5028CFE31.taxon	biology_ecology	Biology. The holotype was collected by sifting deciduous forest leaf litter and soil between and under big stones along a large mountain stream at an altitude of 400 to 500 m (SCHȖLKE & HASHIZUME 2021).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB3FC6245F5028CFE31.taxon	distribution	Distribution. Japan (Honshu).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2AFFB3FC6245F5028CFE31.taxon	discussion	Remarks. This species in known only from two females collected from Kanagawa Prefecture and Chiba Prefecture.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	description	(Fig. 2 H)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	materials_examined	Material examined. JAPAN: HONSHU: AOMORI- KEN: 1 ♁, Rangan- - no-mori, Ajigasawa-machi, 26 – 31. vii. 2003, Y. Kawahara leg. (KUM). AKITA- KEN: 1 ♁, Zenjin, Chôkai-san, Yurihonjô-shi, 19 – 20. vi. 1980, S. Naomi leg. (KUM). IBARAKI- KEN: 12 exs., vicinity of Tsukuba-san (50 – 100 m alt.), Barber traps with fish, 20. iii. – 2. iv. 2006, P. Jałoszyński leg. (cJał, cSch); 1 ex., Tsukuba City, 12. iii. 2006, P. Jałoszyński leg. (cJał). TOCHIGI- KEN: 1 ♀, Marunuma, Katashina-mura, 4 – 5. ii. 1982, S. Naomi leg. (KUM); 1 ♀, Tobiyama Castle, Utsunomiya-shi, 17 – 18. vi. 1998, M. Maruyama leg. (KUM). GUNMA- KEN: 1 ♁ 1 ♀, Narahara, Ueno-mura, 6. vi. 1993, Y. Nagashima leg. (KUM); 1 ♀, Keizuru-yama, Katashina-mura, 13. vii. 1996, K. Ishii et al. leg. (KUM). TOKYO- TO: 1 ♀, the old road on the right bank of Ogawadani (800 m alt.), Nippara, Okutama-machi, 5. v. 1998, K. Haga leg. (KUM). KANAGAWA- KEN: 2 ♀♀, Ô-yama, Tanzawa, 13. v. 1978, M. Tao leg. (KUM); 1 ♀, Ôyama (Tanzawa-ôyama), 15. v. 1970, Gomi leg. (KUM); 1 ♁, between Afurijinja-station and the top of Ôyama, Isehara-shi, 8. v. 1984, K. Haga leg. (KUM). TOYAMA- KEN: 1 ex., Yakushidakeyama, E side (1700 – 2100 m alt.), 24. vii. 2002, BOLM leg. (SMNS). FUKUI- KEN: 1 ♁, Kumotani-yama, Mikata, Wakasa-chô, 15. vi. 1980, H. Sasaji leg. (KUM). YAMANASHI- KEN: 2 ♁♁, Sawara-ike (1200 m alt.), Nirasaki-shi, 8 – 9. vii. 1998, M. Maruyama leg. (KUM); 1 ♀, Hirogawara, Shirane-san, Minamiarupusu-shi, 9 – 13. vii. 1982, S. Naomi leg. (KUM); 1 ex., Kitazawatôge, Minamiarupusu-shi, 28. vii. – 4. viii. 2001, T. Ueno leg. (cSch); 3 ♁♁, Kamihikawa-tôge, Daibosatsu, Kôshû-shi, 15 – 18. vii. 1982, S. Naomi leg. (KUM); 3 ♁♁ 4 ♀♀, Sanjônoyu, Tabayama-mura, 4. v. 1996, M. Maruyama leg. (KUM); 2 exs., Hatchôdaira, Hokuto-shi, 22 – 26. vii. 2001, T. Ueno leg. (cSch). NAGANO- KEN: 1 ♁, Odairahara, Azumino-shi, M. Maruyama leg. (KUM); 1 ex., Norikura-dake, Sururan, 10 – 12. viii. 1972, K. Kurosa leg. (KUM). GIFU- KEN: 1 ♁, Nishihotaka-guchi, 11. vi. 1980, S. Naomi leg. (KUM). AICHI- KEN: 1 ♀, Shitara, Uradani, 2 – 8. v. 1994, K. Yamagishi leg. (KUM). SHIGA- KEN: 1 ex., Mikunidake-yama, E side, 700 m, 12. vii. 2002, BOLM leg. (SMNS). OSAKA- FU: 1 ex., Minomo, 18. iv. 1949, Y. Wada leg. (NHMW). OKAYAMA- KEN: 1 ex., Takiyama, Katsuta-gun, Nagi-chô, 30. iii. 2003, Barber traps, Fujitani leg. (KUM); 4 exs., Ushiroyama, Mimasaka-shi, 3. v. 2003, litter sifted, Fujitani leg. (KUM, cSch). YAMAGUCHI- KEN: 2 ♀♀, Nodani, Yamaguchi-shi, 15. iv. 2004, Y. Fujitani leg. (KUM). SHIKOKU: TOKUSHIMA- KEN: 1 ♀, Tsurugi-san, 19 – 20. vi. 1981, S. Naomi leg. (KUM). KYUSHU: FUKUOKA- KEN: 2 ♁♁ 6 ♀♀, Iwaya, Buzen-shi, 9. v. – 18. vi. 1996, R. Noda leg. (KUM); 3 ♀♀, Iwaya (580 – 640 m alt.), Buzen-shi, iv. 1997, R. Noda leg. (KUM). KU- MAMOTO- KEN: 1 ♀, Kunimidake, 16. iv. 1972, S. Naomi leg. (KUM); 1 ♀, Shiraga-dake, Asagiri-chô, 22. vi. 19? 6, I. Ohtsuka leg. (KUM). OITA- KEN: 1 ♀, Kurodake, Kujû, 28. v. 1986, S. Nomura leg. (KUM).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) trifidus can be distinguished from other members of the subgenus Tachinus from Japan by the combination of the following characters: anterior halves of eytra reddish; male tergite VIII with four lobes, outer lobes very short; lateral lobes of male tergite VIII stout. For detailed redescription, see LI (1995 a: 59). Biology. KAMIMURA & HAYASHI (2014) reported that this species was collected in large numbers by carrion trap. This species is also collected from mushrooms.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	distribution	Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu), Sakhalin.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	discussion	Remarks. This species is distributed in montane zones in mainland Japan. Tachinus (Tachinus) yezoensis Li, 1995 [Japanese name: Ezo-marukubi-hanekakushi] (Fig. 2 I)	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	materials_examined	Type material studied. PARATYPE: 1 ♀, Kamishihoro, Hokkaido, 2 – 6. v. 1990, K. Haga leg. (KUM). Materials examined. JAPAN: HOKKAIDO: 1 ♀, between Go-no-sawa and Hira-no-sawa, the right bank of Nukabira-ko, Kamishihoro-chô, 9. vii. 2005, K. Haga leg. (KUM); 1 ♁, Nopporo-shinrin-kôen, Ebetsu-shi, 25. iv. 2001, S. Hori leg. (KUM); 1 ♀, Akadake, Daisetsu, Kamikawa-chô, 20. vii. 2004, S. Hori leg. (cHor).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	diagnosis	Diagnosis. Tachinus (Tachinus) yezoensis is similar to T. japonicus and T. obesus, but can be distinguished by smaller body, male sternite VII with narrower field of modified setae, and four-lobed female tergite VIII. For detailed description, see LI (1995 a: 67).	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
A81D87C90F2BFFADFF2642140282F851.taxon	distribution	Distribution. Japan (Hokkaido), South Korea.	en	Hashizume, Takuto, Schülke, Michael, Maruyama, Munetoshi (2024): Tachinus of Japan (Coleoptera: Staphylinidae: Tachyporinae): new records, a new synonym, and a new species. Acta Entomologica Musei Nationalis Pragae 64 (1): 121-139, DOI: 10.37520/aemnp.2024.010, URL: https://doi.org/10.37520/aemnp.2024.010
