Intybia histrio ( Kiesenwetter, 1874 )

Ikeda, Hiroshi & Yoshitomi, Hiroyuki, 2017, Revision of the genus Intybia (Coleoptera, Malachiidae) from Japan, European Journal of Taxonomy 331, pp. 1-31 : 4-15

Intybia histrio ( Kiesenwetter, 1874) [Japanese name: Hiro-obi-jôkai-modoki]

Figs 1A , 2A , 3 , 4A , 5A , 6A , 7 , 8A , 9A , 10A , 11A , 12A

Lajus [sic] histrio Kiesenwetter, 1874: 283 [type locality: Kiushiu].

Lajus [sic] flavicornis Kiesenwetter, 1874: 283 [nec Fabricius, 1801]. Synonymized by Lewis (1893). Laius kiesenwetteri Lewis, 1893: 151 (replacement name for Lajus [sic] flavicornis Kiesenwetter, 1874).

Laius histrio – Champion 1921: 151. — Nakane 1963: 186, pl. 93, fig. 13. — Nakane 1957: 13, fig. 1. — Nakane 1983: 164.

Intybia histrio – Wittmer 1997: 191. — Mayor 2007: 417 [catalogued]. — Tshernyshev 2009: 35, figs 8–15. — Yoshitomi & Hayashi 2011: 19. — Tshernyshev 2012: 575, table 1.

Laius historio – Satô 1985: 165, pl. 26, fig. 9. — Satô 1989: 366 [misspelling].

Laius kiesenwetteri – Lewis 1895: 116.

Diagnosis

Antennae entirely yellow; head yellow in apical half; elytral fascia wide, but variable ( Fig. 3 ); antennomere I long, abruptly widened from near the apical portion; antennomere III fusiform, with an oval funnel-shape on outer edge, with a twisted projection near base; gonoporal piece curved, widened from near apical portion, with straight basal projection, bearing minute spines on edge; semi-gonoporal piece straight, slender, widened near central part; ligula long, straight; spinous plate absent.

Material examined

JAPAN, Honshu: Tochigi Pref.: 1 ♂, Ôhira-san, Sonobe, 11 Aug. 1980, H. Kurokawa leg. ( EUMJ); 1 ♀, Ôhira-san, Sonobe, 23 Aug. 1988, H. Yoshitomi leg. ( EUMJ); 1 ♂, Katayama Park, Kuzuu, 25 Sep. 1980, H. Kurokawa leg. ( EUMJ); 2 ♂♂, Watarase, 17 Jul. 1996, Y. Kurosa leg. ( EUMJ). – Tokyo Metropolitan: 1 ♀, Toshima, 27 Jul. 1950, S. Hisamatsu leg. ( EUMJ); 1 ♂, Narimasu, 12 Jul. 1984, collector unknown ( EUMJ). – Kanagawa Pref.: 18 ♂♂, Kanazawa-ku, Yokohama, Jul. 1976, Hasegawa leg. ( EUMJ); 1 ♂, Ninomiya, 14 Jul. 1967, N. Ohbayashi leg. ( EUMJ); 1 ♂, Mito, Miura, 23 Jul. 1968, N. Ohbayashi leg. ( EUMJ); 1 ♂, Zushi-shi, 1 Aug. 1971, S. Tsuyuki leg. ( EUMJ); 2 ♂♂, Miura, 16 Jul. 1971, N. Ohbayashi leg. ( EUMJ); 1 ♂, 1 ♀, Hiratsuka, 6 Jul. 1978, Y. Notsu leg. ( EUMJ). – Shizuoka Pref.: 1 ♀, Okitsu, Seikenji, Sizuoka-shi, 30 Aug. 2004, Y. Satô leg. ( EUMJ). – Aichi Pref.: 1 ♂, Toyokawa, S-2, 3 Aug. 1995, ( EUMJ); 1 ♂, Toyokawa, S-2, 3 Aug. 1995, ( EUMJ); 1 ♂, Chita, st. 2, Minamihama-chô, Chita-shi, 15 Jul. 1982, B. Tanaka leg. ( EUMJ); 1 ♂, Meijo Univ., Nagoya-shi, Apr. 1991, H. Yoshitomi leg. ( EUMJ). – Mie Pref.: 1 ♂, Yokkaichi, Aug. 1979, M. Nagai leg. ( EUMJ). – Hyogo Pref.: 1 ♂, Karasuhara, Kôbe-shi, 26 Jul. 1953, T. Takahashi leg. ( EUMJ); 1 ♂, 1 ♀, Akashi-shi, 24 Jul. 1970, M. Tomokuni leg. ( EUMJ); 1 ♂, 1 ♀, Maya-san, 16 Jul. 1948, S. Iwao leg. ( EUMJ). – Tottori Pref.: 1 ♂, Hoki-chô, Iwatate, Masumizu-Kôgen, 20 Jul. 2013, H. Suenaga leg. ( HSJ). – Okayama Pref.: 1 ♀, Higashiazo, Sôja-shi, 15 Aug. 1995, H. Ono leg. ( EUMJ); 1 ♂, Kurashiki-shi, Koseto, 6 Sep. 2009, H. Suenaga leg. ( HSJ). – Yamaguchi Pref.: 1 ♀, Shizukisan, Hagi, 9 Sep. 1970, S. Hisamatsu leg. ( EUMJ); 1 ♀, Shizukisan, Hagi, 14 Sep. 1973, S. Hisamatsu leg. ( EUMJ).

JAPAN, Shikoku: Tokushima Pref.: 1 ♀, Kawata-kitajima, Yamakawa-chô, 23–26 Aug. 1999, T. Doi and K. Aita leg. ( EUMJ); 1 ♀, mouth of Naka-gawa, Nakagawa-chô, 12–14 Oct. 2000, K. Aita leg. ( EUMJ); 1 ♂, Kawata-kitajima, Yamakawa-chô, 23–26 Aug. 1999, T. Doi and K. Aita leg. ( EUMJ). – Ehime Pref.: 1 ♂, Fukumigawa, Matsuyama, 20 Jul. 1978, Y. Seiyama leg. ( EUMJ); 4 ♂♂, Higashino, Matsuyama-shi, Jul. 2015, K. Sogoh leg. ( EUMJ); 4 ♂♂, Ishitegawa, Matsuyama-shi, 30 Jun. 2015, H. Ikeda leg. ( EUMJ); 1 ♂, Jikiba, Matsuyama-shi, 22 Jun. 2004, Y. Satô leg. ( EUMJ); 1 ♀, Gion-machi, Matsuyama, 20 Jul. 2003, M. Sakai leg. ( EUMJ); 1 ♀, Shimoidai, Matsuyama, 9 Jul. 1998, S. Hisamatsu leg. ( EUMJ); 1 ♀, Shôhachiman-Shrine, Fukuzumi-chô, Matsuyama, 22 Jul. 1992, S. Hisamatsu leg. ( EUMJ); 1 ♀, Sugitate, Matsuyama-shi, 12 Jul. 1975, A. Oda leg. ( EUMJ); 1 ♂, Sugitate, Matsuyamashi, 30 Jun. 1997, S. Hisamatsu leg. ( EUMJ); 1 ♂, Sugitate, Matsuyama-shi, 7 Jun. 1979, T. Inakura leg. ( EUMJ); 1 ♂, 1 ♀, Sugitate, Matsuyama-shi, 15 Jul. 2004, T. Kitano leg. ( EUMJ); 2 ♂♂, Tamatanimachi, Matsuyama-shi, 12 Jul. 2005, T. Kitano leg. ( EUMJ); 1 ♂, Tarumi, Matsuyama-shi, 7 Jul. 2004 ( EUMJ); 1 ♂, Tarumi, Matsuyama-shi, 16 Jun. 2007, T. Kitano leg. ( EUMJ); 1 ♂, Miyukiji, Matsuyamashi, 24 Jun. 1994, N. Yashio leg. ( EUMJ); 4 ♂♂, Momiji-machi, Matsuyama-shi, riverside of Ishitegawa, 24 Jun. 2015, Y. Hisasue leg. ( EUMJ); 76 ♂♂, same data, 25 Jun. 2015, H. Ikeda leg. ( EUMJ); 7 ♂♂, Sugezawa-machi, Matsuyama-shi, 17 Jul. 2014, T. Iwata leg. ( EUMJ); 1 ♂, Shimo-nanba, Matsuyama-shi, 3 Sep. 2009, L. Takachi leg. ( EUMJ); 4 ♂♂, Jyôkoji-machi, Matsuyama-shi, 33°50′58′′ N, 132°47′53′′ E, alt. 100–120 m, 26 Jun. 2007, T. Kurihara leg. ( EUMJ); 1 ♀, Imabari-shi, Ônishi-chô, Ôihama, 14 Nov. 2006, Y. Satô leg. ( EUMJ); 1 ♀, Iyo-shi, 8 Jul. 1975, M. Sakai leg. ( EUMJ); 1 ♀, Iyo-shi, Shimo-kawara, 16 Sep. 2005, T. Kurihara leg. ( EUMJ); 1 ♂, Wadamaru, Sunouchi, Toon-shi, 25– 30 Jun. 2007, J. Ogawa leg. ( EUMJ); 1 ♂, Sankason-izumi, Shigenobu-chô, 17 Jun. 1998, K. Aita leg. ( EUMJ); 1 ♂, 1 ♀, Wadamaru, Sunouchi, Toon-shi, 23 Jul. 2007, T. Kitano leg. ( EUMJ); 1 ♂, Asô, Tobe-chô, side of Nishinotani Ponds, 3 Jul. 1998, S. Hisamatsu leg. ( EUMJ); 1 ♂, Tobe-chô, Iyo-gun, 24 Jun. 1980, K. Sasagawa leg. ( EUMJ); 1 ♂, Nakamura, Ôzu shi, 20 Jun. 2001, M. Sakai leg. ( EUMJ); 6 ♂♂, 1 ♀, Ôzu, Gorô, riverside of Hiji-kawa, 30 Jun. 2001, C. Takahashi et al. leg. ( EUMJ); 1 ♂, 1 ♀, same data, 1 Jul. 2001, C. Takahashi leg. ( EUMJ); 2 ♂♂, Shiba, Nagahama-chô, 30 Jun. 2001, H. Ishikawa et al. leg. ( EUMJ); 1 ♂, same data, 31 Jun. 2001, Y. Kikuhara leg. ( EUMJ); 1 ♂, same data, 1 Jul. 2001, M. Sakai leg. ( EUMJ); 1 ♂, Tokunomori, Ozu, 13 May 1993 ( EUMJ); 4 ♂♂, same data, 19 Jul. 1993 ( EUMJ); 1 ♀, same data, 24 Aug. 1993 ( EUMJ); 1 ♀, Kumakôgen-chô, Saragamine, 1 Jun. 2008, Y. Satô leg. ( EUMJ); 1 ♂, Koya-yama, Odamiyama, 23 Jul. 1996, H. Ono leg. ( EUMJ); 1 ♂, Namakusa-dani, Odamiyama, 20 Jul. 1994, E. Yamamoto leg. ( EUMJ); 2 ♀♀, Oda-chô, 24 Jul. 1994, E. Yamamoto leg. ( EUMJ); 1 ♂, Yoshinogawa, Oda-chô, 21 Jul. 1993, K. Aita leg. ( EUMJ); 7 ♀♀, Nomura Dam, Nomura, 23– 24 Jul. 1994, Ohbayashi, Okada, Fujioka leg. ( EUMJ); 6 ♀♀, same data, 23 Jul. 1994, M. Sakai leg. ( EUMJ); 1 ♀, same data, 24 Jul. 1994, M. Sakai leg. ( EUMJ); 1 ♂, 2 ♀♀, Tawarazu, Akehama, Seiyo, 12 Jul. 2008, J. Ogawa leg. ( EUMJ); 1 ♂, Yamada, Seiyo-shi, Uwachô, 19 Jun. 2004, T. Kurihara leg. ( EUMJ); 1 ♂, Ryutakuji-ike, Shirokawa-chô, Uonashi, Seiyo-shi, 10 Jul. 2006, J. Ogawa leg. ( EUMJ); 1 ♂, Hokezu, Yoshida, Uwajima-shi, 12 Jul. 2008, L. Takechi leg. ( EUMJ); 1 ♀, Iyo-Uwa, 5 Aug. 1956 ( EUMJ); 1 ♀, Shiroyama, Uwajima, 19 Jul. 1955, S. Ueda and Y. Wake leg. ( EUMJ); 1 ♂, Kômo-misaki, Ainann-chô, 14 Jun. 2002, J. Ogawa leg. ( EUMJ); 2 ♂♂, 2 ♀♀, same data, 30 Jun. 2004, J. Ogawa leg. ( EUMJ); 1 ♀, same data, 18 Jul. 2005, J. Ogawa leg. ( EUMJ); 1 ♀, same data, 16 Jul. 2006, T. Kitano leg. ( EUMJ); 2 ♂♂, Fukuura, Ainann-chô, 3 Jul. 2006, J. Ogawa leg. ( EUMJ); 1 ♀, same data, 30 Jun. 2004, J. Ogawa leg. ( EUMJ); 2 ♂♂, 3 ♀♀, Hisayoshi, Jyôhen-chô, 30 Jun. 2004, J. Ogawa leg. ( EUMJ); 3 ♂♂, Ôhama, Jyôhen-chô, 4 Jul. 2000, J. Ogawa leg. ( EUMJ); 1 ♂, Sunokawa, 20– 21 Jul. 1967, M. Miyatake, M. Iga and H. Ohnishi leg. ( EUMJ); 1 ♀, same data, 16 Jul. 1967, S. Hisamatsu leg. ( EUMJ); 7 ♂♂, 7 ♀♀, Akahone-jima, Kamishima-chô, 3 Jul. 2004, T. Kurihara leg. ( EUMJ); 5 ♂♂, 2 ♀♀, same data, 2– 3 Jul. 2004, J. Ogawa leg. ( EUMJ); 5 ♂♂, 2 ♀♀, same data, 2– 3 Jul. 2004, N. Ohbayashi leg. ( EUMJ); 1 ♀, same data, 27– 28 Aug. 2004, J. Yamasako leg. ( EUMJ); 2 ♀♀, same data, 13 Jul. 2006, J. Ogawa leg. ( EUMJ); 4 ♀♀, same data, 27– 28 Sep. 2006, J. Ogawa leg. ( EUMJ); 1 ♂, same data, 26 Jul. 2007, J. Ogawa leg. ( EUMJ); 5 ♂♂, 6 ♀♀, Hakatajima, 1 Aug. 2015, H. Yoshitomi leg. ( EUMJ); 1 ♀, Aijima, Hojo-shi, 16 Aug. 1976, M. Miyatake leg. ( EUMJ); 1 ♀, Nakajima, 12 Apr. 1958, F. Takechi leg.; 1 ♂, 2 ♀♀, Is. Nuwa, 29 Aug. 1957, F. Takechi leg.; 1 ♀, Kashima, Hojo-shi, 27 Jul. 2002, Y. Kikuhara leg. ( EUMJ); 1 ♂, 1 ♀, Ôdô near Kashiwajima, 13 Jul. 1987, Y. Utsunomiya leg.; 1 ♂, Oshima, Yosokuni, Miyakubo-chô, Imabarishi, 13 Jul. 2006, J. Ogawa leg. ( EUMJ). – Kochi Pref.: 3 ♀♀, Ashizuri-misaki, Tosashimizu-shi, 12 Jul. 1987, M. Sakai leg. ( EUMJ); 1 ♂, same data, 7 Jun. 1998, S. Yano leg. ( EUMJ); 1 ♀, same data, 12 Jul. 1987, S. Hisamatsu leg. ( EUMJ); 1 ♂, Nuno, Tosa-shimizu, 12 Jul. 1987, M. Sakai leg. ( EUMJ); 1 ♂, Takase, Niyodo-mura, 10 Jul. 2004, Y. Satô leg. ( EUMJ); 1 ♀, Kuroson, Nishitosa-mura, 15–16 Oct. 1994, M. Sakai leg. ( EUMJ); 2 ♂♂, Ôdo-kaigan, Hata-gun, 23 Jun. 1985, Y. Honda leg.; 1 ♂, 4 ♀♀, same data, 14 Jul. 2002, M. Sakai leg. ( EUMJ); 1 ♀, Shirahama, Saga-machi, 26 Jul. 1999, J. Ogawa leg. ( EUMJ); 1 ♀, Nankoku-shi, estuary of Monobe-gawa, 14 Jul. 2002, Y. Kikuhara leg. ( EUMJ); 1 ♂, Haruno-chô, Niyodogawa-ohashi, 13 Jul. 2002, Y. Kikuhara leg. ( EUMJ); 3 ♂♂, 1 ♀, Tosa-yamada, Odajima, 6 Jul. 2002, T. Kurihara leg. ( EUMJ); 2 ♀♀, Odajima, Tosa-yamada, Monobe-gawa, 4 Oct. 2002, A. Kitahara leg. ( EUMJ); 1 ♂, Monobe-gawa, Nishi-machi, Noichi-chô, 1 Jul. 2002, M. and A. Sakai leg. ( EUMJ); 1 ♀, same data, 6 Jul. 2002, N. Oshige leg. ( EUMJ); 1 ♂, 1 ♀, Tosa-shi, estuary of Niyodo-gawa, 1 Jul. 2002, M. Sakai leg. ( EUMJ); 2 ♂♂, Ino-chô, Okuna, Uji-gawa, 6 Jul. 2002, T. Kurihara leg. ( EUMJ); 1 ♂, Ino-chô, Kada-campsite, 16 Jun. 2002, M. and A. Sakai leg. ( EUMJ); 1 ♂, same data, 14 Jul. 2002, T. Kurihara leg. ( EUMJ); 2 ♂♂, Ototake, Ino-chô, 28–29 Jun. 2001, J. Ogawa leg. ( EUMJ); 2 ♂♂, 3 ♀♀, Hirohata, Iburi, Tosashimizu, 18–20 Jul. 2000, K. Aita leg. ( EUMJ); 1 ♂, Touno-hama, Yasuda-chô, 29 Jun. 2008, Y. Satô leg. ( EUMJ). – Kagawa Pref.: 3 ♂♂, Konpirasan, 11 Jul. 1991, M. Kawanabe leg. ( EUMJ); 1 ♂, 1 ♀, same data, 12 Jul. 1973, S. Kinoshita leg. ( EUMJ); 2 ♀♀, same data, 14 Jul. 1973, S. Kinoshita leg. ( EUMJ).

JAPAN, Kyushu: Fukuoka Pref.: 1 ♂, Fukuchi-yama, 15 Jul. 1953, S. Kimoto leg. ( EUMJ). – Nagasaki Pref.: 1 ♂, 1 ♀, Hirado-shi, 3–10 Aug. 1974, A. Oda leg. ( EUMJ); 1 ♀, same data, 1 Aug. 1975, A. Oda leg. ( EUMJ); 3 ♂♂, same data, 25 Jul. 1975, A. Oda leg. ( EUMJ); 1 ♂, Yasumandake, Hirado-shi, 10 Aug. 1979, A. Oda leg. ( EUMJ); 1 ♂, same data, 31 Jul– 2 Aug. 1974, Y. Notsu leg. ( EUMJ); 1 ♂, same data, 7Aug. 1977, A. Oda leg. ( EUMJ); 1 ♂, Todoroki-kyo-nr. Taradake, 9 Jul. 1991, M. Kawanabe leg. ( EUMJ); 1 ♂, Sasebo, 11 Jul. 1974, J. Okuma leg. ( EUMJ); 1 ♂, Atagoyama, 14 Jul. 1973, A. Oda leg. ( EUMJ); 1 ♀, Fugen-san near Isahaya, 20 Jul. 1973, S. Kinoshita leg. ( EUMJ); 1 ♂, Ômura, 10 Aug. 1966, R. Ohugushi leg. ( EUMJ); 2 ♀♀, same data, 17–19 Aug. 1973, A. Oda leg. ( EUMJ); 4 ♂♂, 5 ♀♀, Toishikawa, Hirado-shi, 1 Aug. 1979, A. Oda leg. ( EUMJ); 2 ♂♂, 1 ♀, Tabira, 8 Aug. 1974, A.Oda leg. ( EUMJ); 1 ♂, 2 ♀♀, same data, 13 Aug. 1979, A. Oda leg. ( EUMJ); 3 ♂♂, 1 ♀, Shikamachi, 30 Jul. 1975, A. Oda leg. ( EUMJ). – Oita Pref.: 1 ♀, Takashima, 11 Aug. 1953, T. Tachikawa leg. ( EUMJ). – Kumamoto Pref.: 1 ♀, Ezu-ko, Kumamoto-shi, 30 Aug. 1991, H. Yoshitomi leg. ( EUMJ). – Miyazaki Pref.: 1 ♂, Takamatsu, 3 Jul. 1958, H. Isozaki leg. ( EUMJ); 3 ♀♀, Sobo-san, 30 Aug. 1959, H. Isozaki leg. ( EUMJ). – Kagoshima Pref.: 4 ♂♂, Takachiho-mine, Kirishima, 23–24 Jul. 1968, S. Kinoshita leg. ( EUMJ); 1 ♂, same data, 16 Jul. 1938, H. Araki leg.; 1 ♂, Satamisaki, 13 Jul. 1969, M. Sakai leg. ( EUMJ); 1 ♂, Ohdomari, 14 Jul. 1969, M. Sakai leg. ( EUMJ); 1 ♀, Kimotsuki-chô, Hoyoshi-dake, 19 Jul. 2010, Y. Okahara leg. ( EUMJ).

JAPAN, Izu Isls., Hachijô-jima Is.: 1 ♀, Hachijô-jima, 23–25 Jul. 2001, N. Ohbayashi leg. ( EUMJ). JAPAN, Iki Is.: 1 ♂, 5 ♀♀, Gonoura, 26 Jul. 1977, K. Matsuda leg. ( EUMJ).

JAPAN, Gotô Isls., Fukuejima: 1 ♂, 3 ♀♀, Fukue-shi, 14–15 Jul. 2004, J. Ogawa leg. ( EUMJ); 2 ♂♂, Oritake, 13 Jul. 2008, R. Ogawa leg. ( EUMJ); 1 ♀, Kisyuku-machi, Toginokubi, 12 Jul. 2008, R. Ogawa leg. ( EUMJ).

JAPAN, Koshiki Isls., Kamikoshiki-jima: 1 ♀, Nakakoshiki, 16–17 Jul. 2002, J. Ogawa leg. ( EUMJ). JAPAN, Ôsumi Isls., Tanegashima: 1 ♀, Makinomine, 30 Jul. 1974, H. Makihara leg. ( EUMJ). – Yakushima: 1 ♀, North of Kurio, 18 Jul. 1997, H. Yoshitomi leg. ( EUMJ); 1 ♂, Kurio, 15 Jul. 1970, K. Yamagishi leg. ( EUMJ); 1 ♀, same data, 4 Aug. 1964, T. Okadome leg. ( EUMJ).

Redescription

Male

Body ( Fig. 1A ) oblong oval, shining, closely covered with yellow pubescence, sparsely covered with long erect setae. Coloration of head, pronotum and elytra black; antennae yellow; head yellow in apical half; elytra with pale yellow fascia, variable ( Fig. 3 ); legs yellow, but hind femur and tibia black.

Head sparsely and minutely punctate; eyes normal, moderately prominent; HL/HW 0.73–0.93 (0.84). Antennae ( Fig. 4A ) long, nearly reaching base of elytra; antennomere I long, abruptly widened from near apical portion; antennomere III ( Fig. 6A ) fusiform, with a oval funnel-shape on outer edge, providing with a twisted projection near base; L/W = 1.76; approximate ratio of each antennomere (n = 1) as 7.7: 1.0: 7.3:1.5: 2.0: 2.0: 2.0: 2.2: 2.5:2.0: 3.0. Pronotum slightly longer than broader, sparsely and minutely punctate; PW/PL 1.07–1.20 (1.12). Elytra oblong-ovate, slightly broadened posteriorly, shallowly and densely punctate; elytral fascia wide, situated just before the middle, sometimes interrupted by suture; EL/EW 1.38–1.82 (1.49); EL/PL 2.52–2.92 (2.70); EW/PW 1.40–1.77 (1.63); TL/EW 2.28– 2.96 (2.51). Aedeagus ( Fig. 7 ) about 0.84 mm in AL. Gonoporal piece ( Figs 8A , 10A ) curved, widened from near the apical portion, with straight basal projection, with serriform process on edge, 0.44 mm in GL; GL/AL 0.52. Semi-gonoporal piece straight, slender, widened near central part, 0.32 mm in SGL. Ligula long, straight, 0.16 mm in LL. Spinous area ( Fig. 9A ) bearing short triangular spines, becoming smaller in apical portion, lacking spinous plate.

Female

Similar to male in general appearance ( Fig. 2A ); head entirely black; HL/HW 0.52–0.68 (0.61); PW/ PL 1.07–1.17 (1.12); EL/EW 1.34–1.78 (1.50); EL/PL 2.80–3.32 (2.95); EW/PW 1.60–1.98 (1.78); TL/EW 2.06–2.64 (2.31). Antennae ( Fig. 5A ) long; antennomere III distinctly expanded laterally, shallowly concave in dorsal portion; L/W = 2.18; approximate ratio of each antennomere (n = 1) as 6.3: 1.0: 4.0:2.0: 2.2: 2.2: 2.3: 2.2: 2.2:2.2: 3.2.

Measurements

Male (n = 20): TL 2.86–3.69 (3.38) mm; HL 0.55–0.71 (0.63) mm; HW 0.68–0.81 (0.75) mm; PW 0.73–0.92 (0.83) mm; PL 0.61–0.84 (0.75) mm; EL 1.70–2.23 (2.01) mm; EW 1.12–1.51 (1.35) mm.

Female (n = 20): TL 3.19–3.94 (3.52) mm; HL 0.40–0.58 (0.48) mm; HW 0.73–0.90 (0.79) mm; PW 0.77–0.97 (0.86) mm; PL 0.7–0.85 (0.77) mm; EL 2.05–2.51 (2.27) mm; EW 1.32–1.72 (1.53) mm.

Distribution ( Fig. 11A )

Japan (Honshu, Shikoku, Kyushu, Hachijô-jima [NR], Iki Is., Fukue-jima, Tanega-shima [NR], Yakushima); Russia (Kunashir Is.), China (Shanghai).

Remarks

This species closely resembles Intybia tsushimensis (Satô & Ohbayashi, 1968) , and is distinguished from the latter by the coloration and structure of the endophallus. These species are distributed allopatrically.

Biological notes

This species is the most common in mainland Japan. It inhabits forest edges and grasslands ( Fig. 12A ), and can be collected from shrubs and bushes by sweeping and beating.

Figures

Fig. 1. Dorsal habitus Intybia spp., ♂. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov., holotype. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956), holotype. Scales = 1.0 mm.

Fig. 2. Dosal habitus of Intybia spp., ♀. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov., paratype. D. I. pelegrini pelegrini (Pic, 1910). E. I.niponica (Lewis, 1895). F. I.takaraensis (Nakane, 1955).G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956), paratype. Scale bars = 1.0 mm.

Fig. 3. Elytral pattern variation of Intybia histrio (Kiesenwetter, 1874).

Fig. 4. Right antennae of Intybia spp., ♂. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956). Scale bars = 0.2 mm.

Fig. 5. Right antennae of Intybia spp., ♀. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). H. I. kawasakii (Nakane, 1956). Scale bars = 0.2 mm.

Fig. 6. SEM photographs of right male antennomere III of Intybia spp. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C, H. I. donan sp. nov., showing projection (H). D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955).

Fig. 7. Aedeagus of Intybia histrio (Kiesenwetter, 1874), showing the terminology and abbreviations for measurement of endophallic structures. A. Aedeagus with holding endophallus. B. Aedeagus with extracted endophallus. C. Gonoporal piece (gp). D. Semi-gonoporal piece (sgp). E. Ligula (l). Abbreviations: AL = Length of aedeagus; GL = length of gonoporal piece; l = Ligula; LL = length of ligula; SGL = length of semi-gonoporal piece.

Fig. 8. Endophallus of Intybia spp., A. Intybia histrio (Kiesenwetter, 1874). B. I. pelegrini pelegrini (Pic, 1910). C. I. takaraensis (Nakane, 1955). D. I. kishiii (Nakane, 1955). Abbreviations: gp = gonoporal piece; l = ligula; sgp = semi-gonoporal piece; sp = spinous plate. Scales = 0.1 mm.

Fig. 9. Spinous area and spinous plate of Intybia spp. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica(Lewis,1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955).Abbreviations: sa = spinous area; sp = spinous plate. Scales = 0.1 mm.

Fig. 10. Endophallic sclerites of Intybia spp. A. Intybia histrio (Kiesenwetter, 1874). B. I. tsushimensis (Satô & Ohbayashi, 1968). C. I. donan sp. nov. D. I. pelegrini pelegrini (Pic, 1910). E. I. niponica (Lewis, 1895). F. I. takaraensis (Nakane, 1955). G. I. kishiii (Nakane, 1955). Abbreviations: gp = gonoporal piece; l = ligula; sgp = semi-gonoporal piece. Scale bars = 0.1 mm.

Fig. 11.Map showing thedistribution of Intybia spp.A.The histriogroup:●:Intybia histrio(Kiesenwetter, 1874), ▲: I. tsushimensis (Satô & Ohbayashi, 1968), ■: I. donan sp. nov.). B. The pelegrini group: ○: I. pelegrini (Pic, 1910), △: I. niponica (Lewis, 1895), □: I. takaraensis (Nakane, 1955), ×: I. kishiii (Nakane, 1955), +: I. kawasakii (Nakane, 1956).

Fig. 12. Habitat and habits of Intybia spp. A. Intybia histrio, ♂ (at Awa-shima, Kagawa Pref.). B. I. niponica, ♀ (at Saijo-shi, Ehime Pref.), photographs by HY. C – D. Type locality of I. donan sp. nov. (Mantabaru-shinrinkôen, Yonaguni-chô, Yaeyama-gun, Okinawa Pref.), showing the flower of Ardisia sieboldii (D), photographs by HI.