Tachinus (Latotachinus) punctiventris Sharp, 1888

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), pp. 121-139 : 122-124

Tachinus (Latotachinus) punctiventris Sharp, 1888

[Japanese name: Kurotsuya-marukubi-hanekakushi]

( Fig. 1A)

Tachinus punctiventris Sharp, 1888: 385 (original description); LI (1995b): 201 (redescription).

Tachinus strigiventris Bernhauer, 1907: 387 (original description); LI (1995b): 203 (as valid species); SCHȖLKE (2015): 7 (synonymized with T. punctiventris ).

See LI (1995b: 201) for complete synonymy.

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, Gokanoshỏ, 9.vii.1983, H. Aramaki leg. ( KUM).

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 (1995b: 201).

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu). This species is widely distributed in lowland to subalpine zones in mainland Japan.

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.