AbstractScleropteroides Colonnelli, 1979 (Ceutorhynchinae: Scleropterini) was revised on the basis of detailed morphological observations. The genus was redefined to include three species from East Asia: S. hypocrita  is redescribed and recorded from northeastern China and northern Korea for the first time; S. horridulus  is redescribed with new records from southern Korea; S. insularis Voss, 1971 was moved from synonymy with S. hypocrita to that with S. horridulus (syn. n.), and S. longiprocessus Huang & Yoshitake, sp. n. is described as new, sympatric with S. hypocrita in Japan. All the species are associated with woody Rubus species (Rosaceae). A key to species, habitus photographs, illustrations of important characters, and distribution maps are provided for each species.The genus  Scleropteroides Colonnelli, 1979 is placed in the tribe Scleropterini, subfamily Ceutorhynchinae, and is characterized mainly by a rostrum expanded from the base to apex, a visible scutellar shield, subtriangular elytra, strongly convex humeri, acute squamate granules on the elytral intervals, a deep rostral channel extending to the metaventrite, and dentate femora , which was described from the Ryukyus, as a member of Scleropteroides. Scleropteroides hypocrita from South Korea. Later, Rhytidosomus insularis was synonymized with Scleropteroides hypocrita by Ceutorhynchinae, although Colonnelli did not provide any explanation of this taxonomic treatment. Recently, Homorosoma horridulum Voss, 1958 with Scleropteroides and recorded it from Taiwan. Thus, until the present paper, Scleropteroides comprises Scleropteroides hypocrita, which is known to occur in South Korea and Japan (Rubus species (Rosaceae)  , and Sclnd Japan .Scleropteroides is in need of revision. Apart from morphological differences associated with hind-wing reduction in Scleropterus, the distinction between the two genera is still insufficient because more than half of the defining characteristics of Scleropteroides are common to Scleropterus or even incorrectly described. Moreover, the taxonomic status of Rhytidosomus insularis should be revised because it shows remarkable differences from Scleropteroides hypocrita despite Colonnelli’s synonymy. Scleropteroides horridulus and Scleropteroides insularis. In addition, our preliminary study suggested the presence of a new species in Japan. Finally, fundamental ecological data on Scleropteroides weevils are still needed.Presently, Scleropteroides on the basis of detailed examinations of specimens collected from various localities in East Asia. In addition, we provide distributional and ecological information on Scleropteroides species. The systematic position of the genus, relationships among species, and the geographic distribution and host plant association of each species are discussed.In this study, we revise the genus Canadian Museum of Nature, Ottawa/Gatineau (CMN); PageBreakLaboratory, Faculty of Agriculture, Kyushu University, Fukuoka, Japan Entomological (ELKU); Laboratory of Environmental Entomology, Faculty of Agriculture, Ehime University, Matsuyama, Japan (EUMJ); Institute of Zoology, Chinese Academy of Sciences, Beijing, China (IZCAS); K. Izawa collection, Tajimi, Japan (KI); Muséum National d'Histoire Naturelle, Paris, France (MNHN); National Institute for Agro-Environmental Sciences, Tsukuba, Japan (NIAES); Natural History Museum Vienna, Wien, Austria (NHMV); S. Miyakawa collection, Kyushu University Museum, Fukuoka, Japan (SM); and Y. Shiozaki collection, Kawasaki, Japan (YS). All the descriptive work in this study was completed by J. Huang and H. Yoshitake.Specimens preserved in the following institutions and private collections were examined for this study:  = body length, from the apex of the pronotum to the apices of elytraLB;  = rostrum length, from a lateral viewLR;  = maximum width of pronotumWP;  = pronotum length, from the base to the apex along the midlineLP;  = maximum width of elytraWE; and  = length of elytra, from the base of humeri to the apex of elytraLE. All measurements are in millimeters. Habitus photographs were taken using a Nikon Coolpix995 digital camera attached to a Nikon SMZ1500 stereoscopic microscope. To examine terminalia, the specimens were macerated in hot water and dissected under a stereoscopic microscope. The abdomen was removed from the body and then cleaned in hot 10% KOH solution for 5–10 min. Terminalia were extracted from the abdomen and mounted on slides with glycerol  or pure water , examined using a Nikon Eclipse 55i optical microscope, and illustrated in detail using a camera lucida. Scale bars were calibrated using a Nikon objective micrometer. Details of some external structures were observed with a scanning electron microscope (Hitachi 3000-N). Plant nomenclature follows Scleropteroides hypocrita from Korea , and a rostral channel extending to the metaventrite. However, it is easily distinguishable from Scleropterus mainly by the bisinuate basal margin of the pronotum , venter, and pygidium black; antennae, apical part of prothorax, and tarsi paler.Vestiture. Body surface evenly covered with ochreous pollinosity in life. Head mainly covered with brown clavate scales, mixed with white scales; vertex with scales directed medially; forehead with scales directed basally; basal margin and median carina fringed with white ovate recumbent scales. Rostrum covered with clavate scales on basal 2/3; scales directed basally, gradually becoming smaller toward apex, replaced by hair-like scales on apical 1/3. Prothorax mainly covered with very similar scales as those on head, with longitudinal stripe of white ovate recumbent scales on median and lateral parts; each scale directed basally. Elytra Ceuthorrhynchidius hypocrita Hustache, 1916: 126 . – Ceuthorrhynchidius hypocritus (incorrect subsequent spelling): Rhytidosomus (Rhytidosomus) holdhausi Wagner, 1944: 59 (“Süd-Japan”). – Homorosoma horridulum : Scleropteroides hypocritaRubus spp.);  : Colonnelli, 1979: 216. – Rhytidosomus holdhausiScleropteroides hypocrita). : Scleropteroides hypocritusRubus spp.). : Rhytidosoma (Rhytidosoma) holdhausiScleropteroides hypocrita). : This species is characterized by the following characters: prothorax moderately constricted in the subapical part Fig. ; elytra LB: 2.18–2.66 . LR: 0.96–1.11 . WP: 0.94–1.08 . LP: 0.78–0.97 . WE: 1.48–1.79 . LE: 1.50–1.82 . N = 10 for all measurements. Habitus as shown in Figs Vestiture. Clavate scales short and semirecumbent on head, basal 2/3 of rostrum, and pronotum. Hair-like scales fine and semirecumbent on apical 1/3 of rostrum. Scales on elytral intervals . LR: 1.05–1.31 . WP: 0.95–1.11 . LP: 0.80–0.97 . WE: 1.54–1.89 . LE: 1.57–1.82 . N = 11 for all measurements.Rostrum . HOLOTYPE OF RHYTIDOSOMUS (RHYTIDOSOMUS) HOLDHAUSI WAGNER, 1944: 1 male (NHMV), "Rorelz/1875/Süd/Japan" (hand-written on grayish card); "♂" (typed on white card); "Typus" (typed on orange card); "Hÿshichosoma/det.H.Wagner/Holdhausi m./Tÿpe! ♂" ; "TYPUS" (typed on red card); "Holdhausi/Jap. Wagn." (hand-written on grayish card); "Scleropteroides/hypocrita /E. Colonnelli det. 1991" . CHINA: Liaoning. 1 male and 1 female, Benxi, 41°17'N, 123°44'E, 3-VI-1963, H. Li 896779 and 896770). 1 male, Anshan, Qianshan, 41°05'N, 123°06'E, 9-VI-1963, H. Li 896773). 1 male and 1 female, Fengcheng, Tongyuanpu, 40°17'N, 123°55'E, 30-VI-1963, H. Li 896771–896772). Heilongjiang. 2 males and 2 females, Ercengdianzi, 45°26'N, 127°07'E, 15–22-VI-1941 896474–896477). D.P.R. KOREA: Pyonganbukdo. 1 female, Mt. Myohyang-San, Around Habiro, 200–550 m, 29-VI- 2009, C. Han (NIAES). Pyeongyangjikhalsi. PyongYang-City, around Mt. RyongAk-San, near Suna-river: 1 male and 2 females, 18-V-2012, C. Han (NIAES); 1 female, 19–22-V-2012, C. Han (NIAES). R. KOREA: Gangwondo. 3 males and 5 females, Chuncheongun, Dongmyeon, Gamjeongri, 21-V-1992, K. Morimoto (ELKU). 3 males and 1 female, Chuncheongun, 11-VI-1997, K. Morimoto (ELKU). Gyeonggido. Pocheongun, Kwangnung: 2 males and 3 females, 16-V-1984, K. Morimoto (ELKU); 1 male and 1 female, 14–19-V-1992, M. T. Chujo (ELKU). Gyeongsangbukdo. 1 male and 1 female, Yeonggi, 14-VI-1997, K. Morimoto (ELKU). Gyeongsangnamdo. 1 female, Mt. Jirisan, Daesungri, 8-VI-1991, J. D. Bae (ELKU). 1 female, Mt. Jirisan, Bycjum Valley, 9-VI-1983, Lee Lab (ELKU). 1 female, Mt. Jirisan, Yeongsinbong–Samsinbong, 17-VI-1994, H. Kojima (ELKU). 1 female, Mt. Jirisan, Piagol, 30-V-2000, H. Yoshitake (NIAES). 1 male, Mt. Jirisan, Simweon, 31-V-2000, S. Kamitani (NIAES). 1 male, Mt. Jirisan, 31-V-2000, H. Yoshitake (NIAES). Hamyanggun, Macheonmyeon, Samjeongri, Mt. Jirisan: 2 males and 2 females, 9-V-1991, J. D. Bae (ELKU); 1 male, 9-V-1991, K. Morimoto (ELKU); 3 females, 11-V-1991, J. D. Bae (ELKU); 2 males and 3 females, 15-V-1991, J. D. Bae (ELKU); 4 males and 1 female, 6-VI-1991, J. D. Bae (ELKU); 2 males and 2 females, Samjeongrurak, 7-VI-1991, J. D. Bae (ELKU); 1 male, 14-VII-1991, K. Morimoto (ELKU); 13 males and 17 females, 15-V-1991, K. Morimoto (ELKU); 6 males and 6 females, 14-VI-1994, H. Kojima (NIAES); 5 females, 516 m, 35°21'09.2"N, 127°38'58.8"E, 5-V-2005, H. Yoshitake, on Rubus crataegifolius (NIAES). Jeollabukdo. 1 male and 1 female, Namwongun, Manbok Valley, 1-VI-1991, J. D. Bae (ELKU). 1 male and 5 females, Namwongun, Deongdong Valley, 7-VI-1991, J. D. Bae (ELKU). 1 male, Namwongun, Nogodan, 12-VII-1991, J. D. Bae (ELKU). 3 males and 1 female, Namwongun, Deongdongri, 19-VI-1994, H. Kojima (ELKU). Namwongun, Sannaemyeon, Simwon Valley: 1 female, 10-V-1991, K. Morimoto (ELKU); 1 male and 3 females, 13-V-1991, J. D. Bae (ELKU). Namwongun, Sannaemyeon, Jeonglyongchy: 2 females, 12-V-1991, K. Morimoto (ELKU); 1 male and 1 female, 14-V-1991, K. Morimoto (ELKU); 1 male and 1 female, 5-VI-1991, J. D. Bae; 1 male, 12-VI-1991, J. D. Bae (ELKU). JAPAN: Hokkaido. 1 male, Hidaka, 11-VII-83, Y. Shiozaki (YS). 8 males and 4 females, Taisei, Hirahama, 7-VI-2003, T. Miyata (NIAES). 1 male and 1 female, Kamiiso, Tomigawa, Hosokomatazawa, 27-VI-1993, T. Miyata (NIAES). 1 female, Fukushima, Mitake, 13-VI-1998, H. Yoshitake (NIAES). 1 male and 2 females, Assabuchou, Shimizu, 14-VI-1998, H. Yoshitake (NIAES). Honshu. AOMORI. Shimokita-hantou Peninsula, Oohata, Yunomata: 1 female, 16-VII-1956, K. Morimoto (ELKU); 1 female, 26-VII-1956, K. Morimoto (ELKU). 1 male and 1 female, Misawa, Yachigashira, 7-VI-2007, K. Morimoto (NIAES). 1 male, Hachinohe, Tanesashi-kaigan, 10-VI-2007, K. Morimoto (NIAES). IWATE. 1 male and 2 females, Miyako, Kamegamori, 15-VI-1986, K. Emoto (NIAES). 2 females, Sawauchi, Yasugasawa, 31-V-1998, H. Yoshitake (NIAES). 2 males and 1 female, Hanamaki, Toyosawa-rindou, 338–313 m, 39°28'36.2"–39°29'08.6"N, 140°56'15.7"–140°56'32.9"E, 8-VI-2007, H. Yoshitake, on R. crataegifolius (NIAES). 1 male and 1 female, Kawai, Yoshibezawa, 9-VI-2007, K. Morimoto (NIAES). 1 male, Kuji, Ootsuki-touge Pass, 10-VI-2007, K. Morimoto (NIAES). 1 male and 3 females, Kawai, Tsuchisaka-touge Pass, 12-VI-2007, J. Kantoh (NIAES). 1 male, Matsukusa, 800 m, 21-VI-1989, M. J. Sharkey (CMN). 3 males and 2 females, “Mt. Hyacinthe” (most probably an error in writing Mt. Hayachine), 500 m, 21-VI-1989, M. J. Sharkey (CMN). MIYAGI. 1 male and 3 females, Marumori, Fudou, 5-V-1994, H. Yoshitake (NIAES). 1 female, Shichigashuku, Inago, 20-V-1994, H. Yoshitake (NIAES). 1 female, Shiroishi, Mizubashounomori, 27-VI-1994, H. Yoshitake (NIAES). AKITA. Lake Tazawako: 2 females, 4-VI-1969, S. Miyakawa (SM); 3 males, 12-VI-1971, S. Miyakawa (SM); 1 male and 1 female, 15-VI-1971, S. Miyakawa (SM). 3 males and 2 females, Karabuki-shitsugen, Kuroyu, 12-VI-1974, S. Miyakawa (SM). 2 females, Hiyagata–Kunimi-onsen, 16-VI-1974, S. Miyakawa (SM). 3 males and 2 females, Senboku, Nishiki, Ainai, 10-VI-1983, S. Miyakawa (SM). YAMAGATA. 1 female, Yonezawa, Kariyasu, 15-VI-1975, S. Miyakawa (SM). 5 males and 4 females, Mt. Zaousan, Yoshikari-rindou, 18-VI-1983, S. Miyakawa (SM). 1 male, Oguni, Kotamagawa, 300 m, 6-VI-2005, H. Hirano (NIAES). 1 female, Oguni, Tamagawa, 120–150 m, 6-VI-2005, H. Hirano (NIAES). FUKUSHIMA. 1 female, Kamitoriwata, 20-VI-1976 (NIAES). Iwaki, Eda: 2 males and 1 female, 25-V-1980, Y. Shiozaki (YS). 3 males and 3 females, Minamiaizu, Funamata-rindou, 20-V-1983, S. Miyakawa (SM). 2 males, Namie, 30-IV-1994, H. Yoshitake (NIAES). Haranomachi, Yokokawa, Akane-rindou: 1 male, 15-VI-1984, K. Kinugasa (NIAES); 1 male, 31-V-1987, H. Ebihara (NIAES). Haranomachi, Kozikiishi-rindou: 11 males and 28 females, 4-VI-1988, S. Miyakawa (SM); 1 male, 4-VI-1988, S. Miyakawa (NIAES); 14 males and 9 females, 5-VI-1988, S. Miyakawa (SM). Hinoemata: 1 male, 14-VI-1980, Y. Shiozaki (YS); 1 female, 20-VI-1990, H. Kojima (ELKU); 2 females, Mikawa-rindou, 24-VI-1990, K. Yoshihara (SM). 1 male and 1 female, Nishigou, Yukiuribashi, 3-V-2002, S. Mizunoya (NIAES). 1 female, Nishigou, Daijou, 22-V-2002, S. Mizunoya (NIAES). Nishigou, Mabune: 1 male and 2 females, 650 m, 3-VI-2005 (NIAES), H. Hirano; 1 male and 1 female, 770 m, 3-VI-2005, H. Hirano (NIAES); 6 males and 8 females, 3-VI-2005, H. Yoshitake, on Rubus sp. (NIAES). IBARAKI. 3 males and 7 females, Mt. Yamizosan, Shimokitazawa, 28-V-1988, Y. Kurosawa (SM). 1 female, Takahagi, 29-V-1996, H. Takizawa (NIAES). TOCHIGI. 1 female, Mt. Sukaizan, 4–5-VII-1971, H. Takizawa (NIAES). 1 male and 1 female, Nishinasuno, 8-V-1977, S. Miyakawa (SM). 4 males and 3 females, Nikko, Kashiwagi, 16-V-1982, S. Miyakawa (SM). 1 male, Nikko, Nebazawadani, 19-VII-1940, S. Miyakawa (SM). 1 male, Fujiwara, Midorizawa-rindou, 21-V-1989, S. Miyakawa (SM). 1 female, Nasu, Toyahara, 13-VII-1996, H. Takizawa (NIAES). 1 female, Nasu, Mt. Minamigassan, 20-VII-1996, H. Takizawa (NIAES). 2 males and 1 female, Nasu-kougen, 1200–1500 m, 7-VI-2005, H. Hirano (NIAES). 4 males and 3 females, Nishinasuno, N. G. R. I., 500 m, 10-VIII-1989, M. J. Sharkey (CMN). GUNMA. 1 male and 1 female, Utsunomiya, 6-V-1968, H. Takizawa (NIAES). 2 females, Mt. Hotakayama, 13–15-VII-1975, H. Irie (ELKU). 1 female, Akagi, 21-V-1967 (SM). 1 male, Akagi, Akagi-shizenen, 9–10-V-1988, S. Saito (NIAES). 1 female, Akagi, Mt. Akagisan, 3-VI-1997, T. Ishikawa (NIAES). 1 male, Oku-tone, Lake Fujiwarako, 13-V-1990, S. Tsuyuki (NIAES). 4 males and 5 females, Niiharu, Amemi-rindou, 4-V-1998, S. Arai (NIAES). 5 males and 5 females, near Mt. Aneyama, 19-V-2001, S. Arai (NIAES). Matsuida, Kirizumi-onsen: 1 female, 27-V-1989, K. Matsumoto (NIAES); 1 male and 1 female, 27-V-1989, H. Kojima (NIAES); 1 male and 1 female, 17-V-1998, S. Arai (NIAES). SAITAMA. 2 males and 2 females, Shoumaru-touge Pass, 9-V-1976, S. Miyakawa (SM). 1 male, Minano, Shimohinozawa, Sawabe, 1-VI-1984, S. Miyakawa (SM). 1 female, Ootaki, near Taiyouji, 4-VII-1999, S. Arai (NIAES). CHIBA. 4 males and 2 females, Mt. Kiyosumiyama–Kenminnomori, 31-III-1979, J. Okuma (SM). 1 female, Bousou-hantou Peninsula, Mt. Kiyosumiyama, 30-IV-1991, S. Tsuyuki (NIAES). TOKYO. 1 male, Mitakadai, 30-V-1941, S. Miyakawa (SM). 1 male and 1 female, Mitaka, 25-V-1948, S. Miyakawa (SM). Mt. Oodakeyama: 1 male and 2 females, 21-V-1942, S. Miyakawa (SM); 4 males and 2 females, 24-V-1942, S. Miyakawa (SM). 1 female, Mt. Mitakesan, 15-V-1966 (SM). 1 female, Itsukaichi, Kariyose, 20-IV-1968, Y. Hasegawa (SM). Mt. Mitousan: 1 female, 4-V-1968, H. Takizawa; 1 male and 1 female, 27-V-1968, H. Takizawa (NIAES). 2 males and 2 females, Mt. Jinbasan, 6-V-1974, S. Miyakawa (SM). 1 male, Hinohara, Yazawa-rindou, 18-V-1997, H. Yoshitake (NIAES). Hachiouji: 3 males and 1 female, 1-V-1938, S. Miyakawa (SM); 1 male and 1 female, 1-V-1966 (SM); 2 males, 1-V-1966, S. Miyakawa (SM). Hachiouji, Uratakao, Kogesawa-rindou: 1 male, 30-IV-1938, S. Miyakawa (SM); 2 males and 2 females, 350–550 m, 35°38'30"–35°39'27" N, 139°11'57"–139°14'30" E, 17-V-2005, H. Yoshitake, on R. crataegifolius (NIAES). Okutama: 1 female, 9-V-1968, Hasegawa (SM); 1 male, 29-IV-1980, Y. Shiozaki (YS). 3 males and 4 females, Okutama, Kurasawadani, 6-V-1948, S. Miyakawa (SM). 2 males and 5 females, Okutama, Nippara, 24-V-1970, K. Unno (SM). 1 male and 1 female, Okutama, Unazawa, 7-V-1982, K. Shiozaki (YS). 2 males and 1 female, Okutama, Asamaone, 2-V-1992, K. Matsumoto (NIAES). KANAGAWA. 1 male, Yokohama, Motomachi, 29-VI-1970, S. Miyakawa (SM). 2 females, Hakone, Mt. Daigatake, Kozuka, 24-V-1979, S. Miyakawa (SM). Hadano, Mizunashigawa: 1 male, 29-IV-1983, K. Shiozaki (YS); 1 male, 29-IV-1983, Y. Shiozaki (YS). 1 female, Hadano, Yabitsu-touge Pass, 30-V-1983, K. Shiozaki (YS). 1 male, Yamakita, Mikuni-touge Pass, 23-V-1994, Y. Notsu (NIAES). 1 female, Tsukui, Kaminokawa-rindou, 21-V-1995, Y. Goto (NIAES). NIIGATA. 1 male, Kamikawa, 3-VI-2000, K. Takahashi (NIAES). FUKUI. 2 males and 5 females, Kanazu, Mt. Kariyasuyama, 20-V-1989, S. Inoue (ELKU). YAMAMASHI. 1 female, Mt. Mishotaisan, 17-VII-1940, S. Miyakawa (SM). 1 male and 1 female, Shirosu, 7-VI-1958 (ELKU). 1 female, Uenohara, 17-IV-1968 (SM). 1 male, Kawamura, Akiyama, 4-V-1969, S. Miyakawa (SM). 1 male, Lake Saiko, 27-V-1970, K. Unno (SM). 1 female, Ootsuki, Tomioka, 17-V-1976, S. Miyakawa (SM). 14 males and 19 females, Ootsuki, Koganezawa-rindou, 30-V-1980, J. Okuma (SM). 1 female, Mt. Fujisan, Subaru-line, 2000 m, 3-VI-1977, S. Miyakawa (SM). 1 female, Mt. Yatsugatake, 26-V-1979, A. Seki (NIAES). 16 males and 14 females, Koganezawa, 2-VI-1980, S. Miyakawa (SM). 1 female, Daibosatsu-touge Pass, 8-VI-1968, Y. Hasegawa (SM). Enzan, Hikawa-rindou: 1 male, 1-VII-1982, M. Sawai (SM); 1 male and 1 female, 2-VII-1982, M. Sawai (SM). 1 female, Mt. Kushigatayama, Maruyama-rindou, 23-IV-1984, S. Tsuyuki (NIAES). 2 males, Akeno, Manjuu-touge Pass, 6-VI-1986, S. Miyakawa (SM). 1 male, Kanayama, 1-VII-1989, T. Nonaka (NIAES). Ashiyasu, Hirogawara: 1 male, 24-V-1969, Y. Hasegawa (SM); 1 female, 8-VI-1989, H. Kojima (NIAES); 1 male and 1 female, 1529 m, 17-VI-1990, S. Miyakawa (SM); 1 female, 20-VI-1993, T. Horiguchi (NIAES). 1 male and 1 female, Nirasaki, Mt. Kayagatake, 16-V-1996, S. Miyakawa (SM). 1 female, Tabayama, Sanjounoyu, 20-V-1999 (NIAES). NAGANO. 1 female, Mt. Nyuukasayama, 6-VI-1942, S. Miyakawa (SM). 1 male and 3 females, Nagano, Uematsu, VI-1957, K. Matsuo (SM). 1 male and 1 female, Ina, Onasawa, 6-VI-1962, K. Oshima (ELKU). 1 male, Shimajimadani, VI-1970, N. Nino (SM). 1 female, Tobira-onsen, 26-VI-1974, H. Hayakawa (SM). 1 female, Kisofukushima, Higashiyama, 19-VII-1986, K. Matsui (SM). 1 female, Kisofukushima, 21-VIII-1988, K. Matsui (SM). 1 female, Kisofukushima, Uyama, 29-VIII-1988, K. Matsui (SM). 1 male, Kisofukushima, Kibio, 18-IX-1988, K. Matsui (SM). 1 male and 1 female, Kisokoma-kougen, Kibio, 21-VIII-1989, K. Matsui (SM). 1 male and 2 females, Nakakawa, 1-V-1998, H. Yoshitake (NIAES). 1 female, Hara, Pension Village, 2–4-VII-1998, H. Yoshitake (NIAES). GIFU. 1 male, Mt. Hakusan, 29-VI-2002, H. Hirano (NIAES). 1 female, Takane, Hiwada-kougen, 1-X-1989, K. Matsui (SM). 6 exs., Toki, 12-V-2010, K. Izawa, on R. trifidus (KI). SHIZUOKA. 1 female, Shinfuji, 30-IV-1989, N. Niwa (NIAES). 1 female, Honkawane, Sessokyou, 9–10-V-1992, T. Kishimoto (NIAES). Izu-hantou Peninsula: 2 males and 1 female, Kyuu-amagi-touge Pass, 3-V-1972, S. Miyakawa (SM); 2 males and 3 females, Mt. Nekkodake, 19-V-1974, S. Miyakawa (SM); 21 males and 16 females, Okuhara-rindou, 22-VI-1977, J. Okuma (SM); 2 females, Mt. Toogasayama, 17-V-1980, J. Okuma (SM); 1 male, Izu Okawa, 3-VI-1989, H. Takizawa (NIAES). AICHI. 8 males and 6 females, Kasugai, Hosono, 1-V-1991, H. Kojima (ELKU). Toyota, on R. trifidus: 5 exs., Oobora, Nikake-rindou, 3-V-2010, K. Izawa (KI); 6 exs., Nishiichinonochou, 8-V-2013, K. Izawa (KI); 7 exs., Asugawachou, Asugawa-hoan-rindou, 8-V-2013, K. Izawa (KI). MIE. Misugi, Hirakura: 1 male, 2-VI-1985, T. Imamura (NIAES); 3 females, 600–700 m, 15–17-V-2005, H. Hirano, on R. crataegifolius (NIAES). 1 male, Fujigawa, Mt. Suzugadake, 600 m, 3-V-2002, S. Arai (NIAES). 4 exs., Komonochou, Komono, 15-V-2013, K. Izawa, on R. microphyllus (KI). SHIGA. 1 male and 1 female, Mt. Ibukiyama, 220 m, 3-VI-1990, S. Miyakawa (SM). KYOTO. 1 male, Sugi-touge Pass, 29-V-1977, M. Sawai (SM). HYOGO. 1 male, Haga, Akasai-keikoku, 3-V-1993, S. Tsuyuki (NIAES). NARA. 1 female, Gose, Mt. Kongousan, 1100 m, 4-VII-1998, T. Kishimoto (NIAES). WAKAYAMA. 1 male and 1 female, Mt. Gomadanzan, 7–8-VI-1997, T. Ito (NIAES). 1 female, Nakahechi, Mizukami, 28-IV-2003, H. Hirano (NIAES). 1 male, Arida, Kamiyukawa, 19-V-1973, I. Matoba (ELKU). TOTTORI. 1 male and 1 female, Wakasa, Mt. Hyounosen, 7-VI-1987, K. Yoshihara (SM). SHIMANE. 1 female, Okinoshima I., Mt. Takuhiyama, 13-V-1975, J. Okuma (SM). OKAYAMA. 4 males and 1 female, Yubara, Yubara-onsen, 21-V-1991, H. Nakamura (NIAES). 1 male, Hokubou, Kamimizuta, 8-V-1982, K. Yoshihara (SM). 1 female, Iwayadani, 4-V-1981, K. Yoshihara (SM). 1 male and 1 female, Kawakami, Myouren-keikoku, 27-VI-1982, K. Yoshihara. HIROSHIMA. 1 female, Kouzan, Bessako, 10-V-1996 (ELKU). 1 female, Yoshiwa, 11-V-1976, K. Baba (ELKU). Shikoku. TOKUSHIMA. 1 male, Sanuki Mts., Mt. Ryuuousan, 17-VIII-1989, K. Matsumoto (NIAES). EHIME. 5 males and 5 females, Omogokei, 18–19-V-1968, K. Hatta (EUMJ). 1 male, Iyomishima, Tomisato, 3–5-VIII-1974, G. Tokihiro (EUMJ). 4 males and 6 females, Houjou, Kukawa, 22-IV-1977, A. Oda (EUMJ). Kyushu. FUKUOKA. Mt. Hikosan: 1 male, 18-VI-1965, K. Takeno (ELKU); 1 female, 12-VI-1965, S. Kimoto (ELKU); 1 female, 17-V-1971, M. T. Chujo (ELKU); 2 males and 1 female, 30-V-1995, K. Morimoto (ELKU). 1 male, Mt. Tachibanayama, 23-IV-1997, H. Kojima (ELKU). SAGA. 1 female, Sefuri Mts., 28-IV-2002, H. Hirano (NIAES). 16 males and 13 females, Mt. Kusenbuyama, Hakotani-rindou, 8-V-2005, H. Yoshitake, on R. crataegifolius (NIAES). NAGASAKI. Tsushima I.: 1 female, Mt. Ooboshiyama, 16-VII-1981, Y. Syouno (ELKU); 1 male, Izuhara, Mt. Ariakeyama, 5–9-V-1997, H. Yoshitake (NIAES). 2 males and 1 female, Tashirobaru, 29-IV-1979, S. Imasaka (NIAES). 1 male, Taradake Mts., Mt. Gokaharadake, 12-VI-1979, S. Imasaka (NIAES). Shimabara, Sanbuki: 1 male and 1 female, 7-V-1976, S. Imasaka (NIAES); 1 male, 10-V-1976, S. Imasaka (NIAES); 6 females, 17-V-1976, S. Imasaka (NIAES); 1 female, 21-V-1976, S. Imasaka (NIAES); 1 male and 2 females, 22-V-1976, S. Imasaka (NIAES). Shimabara, Akamatsudani: 3 females, 24-V-1980, S. Imasaka (NIAES); 1 male, 27-V-1980, S. Imasaka (NIAES). 2 females, Sasebo, Mt. Hattendake, 23-V-1982, S. Miyakawa (SM). 3 males and 2 females, Kawatana, Kobagou, 27-V-1984, J. Okuma (SM). OITA. Kuju Mts., Mt. Kurodake: 1 female, 29-VII-1979, S. Imasaka (NIAES); 1 male, 9-VI-1985, K. Konishi (ELKU); 2 males, Oike-enchi, 7-VI-2002, H. Hirano (NIAES). 1 female, Kuju Mts., Jizoubaru, 28-V-1987, K. Morimoto (ELKU). 1 male, Kuju Mts., Bougatsuru, 27-V-1988, K. Morimoto (ELKU). 1 male and 2 females, Kuju Mts., Choujabaru, 22-V-1999, K. Morimoto (ELKU). MIYAZAKI. 1 male, Ebino, Shiratori-onsen, 30-IV-1991, K. Morimoto (ELKU).HOLOTYPE: 1 female (MNHN), “Mont Takao/près Hachiôji/Japon 30-5-08/Edme Gallois; MUSEUM PARIS/NIPPON MOYEN/E. GALLOIS 1912; China (Liaoning and Heilongjiang – new record), Korea , Japan  Fig. .Rubus idaeus L. subsp. melanolasius Focke f. concolor (Kom.) Ohwi in Korea (Rubus crataegifolius Bunge with flower buds and Rubus pungens Camb. var. oldhamii (Miq.) Maxim. with flowers. In Japan, adults have been collected on many occasions from Rubus species, such as Rubus crataegifolius, Rubus microphyllus, and Rubus trifidus. In Toyosawa-rindou, Iwate, Honshu . LR: 0.97–1.08 . WP: 0.95–1.00 . LP: 0.76–0.85 . WE: 1.49–1.62 . LE: 1.53–1.66 . N = 10 for all measurements. Habitus as shown in Figs Vestiture. Clavate scales slightly longer and semierect on head, basal 2/3 of rostrum, and pronotum. Scales on elytral intervals . LR: 0.97–1.15 . WP: 0.90–1.07 . LP: 0.74–0.86 . WE: 1.43–1.64 . LE: 1.46–1.68 . N = 10 for all measurements.Rostrum /[JN: Nagaba-momiji-ichigo] with flowers” (print ed on white card); “[ HOLOTYPE ] Male/Scleropteroides/longiprocessus/Huang & Yoshitake, 2008” (typed on red card). PARATYPES. JAPAN: Honshu. IWATE. 1 male and 1 female, Miyako, Genbehdaira, 9-VI-2007, K. Morimoto (NIAES). 2 males and 6 females, Tsuchisaka-touge Pass, Kawai, 12-VI-2007, J. Kantoh (NIAES). MIYAGI. 1 male, Naruse, Miyatojima I., V-1995, M. Kodama (NIAES). 1 male and 2 females, Sendai, Mt. Banzan, 20-V-1995, H. Yoshitake (NIAES). AKITA. 1 male and 1 female, Lake Tazawako, 15-VI-1974, S. Miyakawa (SM). YAMAGATA. 2 males and 3 females, Mt. Zaousan, Yoshikari-rindou, 18-VI-1983, S. Miyakawa (SM). FUKUSHIMA. Haranomachi, Kozikiishi-rindou: 1 male, 30-V-1987, H. Ebihara (NIAES); 1 male, 5-VI-1988, S. Miyakawa (SM). 1 female, Haranomachi, Akanesawa-rindou, 5-VI-1988, S. Miyakawa (SM). 1 female, Namie, 30-IV-1994, H. Yoshitake (NIAES). 1 male, Iizaka, Moniwa, Yakematsu, 1-V-1997, S. Saito (NIAES). IBARAKI. Mt. Yamizosan, Shimokitazawa: 7 males and 1 female, 1022 m, 28-V-1988, S. Miyakawa (SM); 1 male and 2 females, 28-V-1988, Y. Kurosawa (SM). TOCHIGI. 1 male and 2 females, Nikko, Kashiwagi, 16-V-1982, S. Miyakawa (SM). 1 male and 1 female, Shiobara, Hikinuma, 19-V-1989, S. Miyakawa (SM). 3 males and 1 female, Mt. Shibakusayama, 18-V-1990, H. Kojima (ELKU). GUNMA. 1 male and 1 female, Matsuida, Kirizumi-onsen, 16-V-1998, S. Arai (NIAES). 2 males and 2 females, Niiharu, Amemi-rindou, 4-V-1998, S. Arai (NIAES). 1 female, Fujiwara, Nakanosawa-rindou, 19-V-1989, S. Miyakawa (SM). 6 males and 4 females, Fujiwara, Midorizawa-rindou, 29-V-1989, S. Miyakawa (SM). NIIGATA. Kurokawa: 1 female, 28-IV-1973, K. Baba (ELKU); 2 females, 26-V-1976, K. Baba (ELKU); 1 female, 24-V-1980, K. Baba (ELKU). 1 male and 1 female, Teradomari, Enjouji, 21–23-V-1996, K. Ishida (NIAES). 1 male, Sadogashima I., Nagaishihama, 22-VII-1970, K. Baba (ELKU). FUKUI. 2 males and 1 female, Obama, Shimonegouri, 6-V-1979, H. Sasaji (ELKU). YAMANASHI. 1 female, Mt. Fujisan, Fuji-rindou, 23-VI-1983, S. Miyakawa (SM). 1 male, Ootsuki, Nanaho, 9-V-1976, S. Miyakawa (SM). 1 female, Ootsuki, Koganezawa-rindou, 30-V-1980, J. Okuma (SM). NAGANO. 1 female, Tobira-onsen, 26-VI-1985, H. Hayakawa (SM). 5 males, Nagiso, 29-IV-1998, H. Yoshitake (NIAES). 2 males and 1 female, Iida, Hatouchi-rindou, 29–30-IV-1998, H. Yoshitake (NIAES). 2 males, Nakakawa, 1-V-1998, H. Yoshitake (NIAES). GIFU. Nakatsugawa, Kamisaka: 1 female, 13-VI-1987, S. Miyakawa (SM); 1 female, 13-VI-1987, K. Morimoto (ELKU). 5 exs., Nakatsugawa, Nenoue-kougen, 6-V-2013, K. Izawa, on R. palmatus var. coptophyllus (KI). SHIZUOKA. 1 female, Shinfuji, 30-IV-1989, N. Niwa (NIAES). 5 males and 6 females, Nakaizu, Mt. Amagisan, 3-V-1990, H. Kojima (ELKU). 1 male and 4 females, Mt. Ooyama, 5-V-1993, Y. Notsu (NIAES). 3 males and 1 female, Shizuoka, Umegashima, 15-V-1993, T. Kishimoto (NIAES). Izu-hantou Peninsula: 3 males and 1 female, Hacchouike Pond, Amagi-touge Pass, 28-V-1972, S. Miyakawa (SM); 1 female, Kamo, Oogusu, 11-V-1980, J. Okuma (SM); 1 female, Hacchouike Pond–Kantenbashi, 14-V-1980, J. Okuma (SM). 1 male, Umegashima, 15–16-V-1993, H. Sato (NIAES). 1 female, Shizuoka, Nakaizu, Amagi-kougen, 31-V-1987, S. Miyakawa (SM). AICHI. 6 exs., Shitara, Mt. Nishinagura-Iyama, 29-V-2010, K. Izawa, on R. palmatus var. coptophyllus (KI). Toyota, on R. palmatus var. coptophyllus: 5 exs., Nishiichinonochou, 8-V-2013, K. Izawa, (KI); 4 exs., Asugawachou, Asugawa-hoan-rindou, 8-V-2013, K. Izawa (KI); 2 exs., Inabuchou, Noirigawa, 22-V-2013, K. Izawa (KI). SAITAMA. 1 female, Mt. Kasayama, 26-V-1967, H. Takizawa (NIAES). 1 male, Saitama Yokote, 28-IV-1974, S. Miyakawa (SM). 1 female, Lake Miyazawako, 11-V-1975, S. Miyakawa (SM). 1 male, Shoumaru-touge Pass, 9-V-1976, S. Miyakawa (SM). CHIBA. 1 female, Mt. Kiyosumiyama–Kenminnomori, 31-V-1979, J. Okuma (SM). TOKYO. 1 female, Okutama, Kurasawadani, 19-VI-1938, S. Miyakawa (SM). Nishitama, Mt. Oodakeyama: 1 male, 21-V-1942, S. Miyakawa (SM); 2 males and 1 female, 15-V-1966, S. Miyakawa (SM). Hachiouji, Mt. Takaosan: 1 female, 30-V-1980, Y. Shiozaki (YS); 1 male and 1 female, 23-VI-1996, H. Yoshitake (NIAES); 5 exs., 22-V-2010, K. Izawa, on R. palmatus var. coptophyllus (KI). Hachiouji, Mt. Takaosan, Kogesawa-rindou: 3 males, 14-V-1944, S. Miyakawa (SM); 1 male and 1 female, 1–2-V-1999, H. Yoshitake (NIAES). 5 males and 5 females, Hachiouji, Mt. Takaosan, Path 6, 240–599 m, 35°37'30"–35°37'50"N, 139°14'36"–139°15'43"E, 15-V-2005, R. palmatus var. coptophyllus, H. Yoshitake (NIAES). 1 female, Hachiouji, Kitano, 14-IV-1968, S. Miyakawa (SM). 1 female, Inagi, Yomiuri Land, 17-V-1974, S. Miyakawa (SM). KANAGAWA. 1 male, Mikuni-touge Pass, 7-VI-1970, H. Takizawa (NIAES). 1 female, Mt. Ooyama, 2-VI-1981, S. Miyakawa (SM). 2 males, Yokohama, Nakayama, 3-V-1983, S. Miyakawa (SM). 1 female, Hakone, Oowakudani, 15-VI-1985, S. Tsuyuki (NIAES). Hadano: 1 female, Mt. Koubouyama, 24-IV-1983, Y. Shiozaki (YS); 1 male, 30-IV-1990, H. Takizawa (NIAES). 1 female, Tanzawa Mts., Mizunashigawa, 30-IV-1983, Y. Shiozaki (YS). Hadano, Yabitsu-touge Pass: 1 female, Yabitsu, 1-VII-1983, K. Shiozaki (YS); 1 female, 29-IV, K. Suzuki (ELKU). YAMANASHI. 1 female, Akaishi-sanmyaku Range, Norogawa-rindou, 5-VI-1983, Y. Shiozaki (YS). MIE. 1 female, Ninomata–Owase, 26-VI-1960, H. Ichihashi (NIAES). 1 male, Komono, Unbomine, 28-IV-1985, A. Amagasu (ELKU). 1 female, Shiga, Mt. Ibukiyama, 10-VI-1990, H. Takizawa (NIAES). 1 female, Toba, Mastuno, Mt. Aonomineyama, 19-V-1996, H. Yoshitake (NIAES). 8 males and 6 females, Toba, Toushijima I., 10-IV-1996, K. Ishida (NIAES). 1 male, Misugi, Hirakura, 7–8-VI-1997, H. Yoshitake (NIAES). NARA. 1 female, Kawakami, Mt. Wasamatayama, 8-VII-1995, A. Yoshida (NIAES). 1 male, Mt. Miyama, 7-VII-1989, S. Yamada (NIAES). OKAYAMA. 2 males and 1 female, Kamo, Kurami, 29-VI-1985, K. Watanabe (SM). 2 females, Tetta, Mt. Aratoyama, 16-V-1982, K. Yoshihara (SM). 1 male, Takahashi, Mt. Gagyuusan, 5-V-1984, K. Yoshihara (SM). Izu Islands. 1 female, Kouzushima I., Maehama–Tsuzukizawa, 9-V-1979, J. Okuma (SM). Shikoku. TOKUSHIMA. 1 female, Haranomachi, 8-VI-1980, K. Shiozaki (YS). 1 male and 1 female, 1-VI-1986, A. Watanabe (YS); 1 female, 5-VI-1986, A. Watanabe (YS). EHIME. 2 females, Imabaru, Mt. Takanawazan, 5-V-1976, S. Inoue (EUMJ). KOCHI. 1 male, Okunanokawa, 4-V-1967, H. Oonishi (EUMJ). Cape Murotomisaki: 1 male and 1 female, 7-VI-1959, M. Miyatake (EUMJ); 1 female, 8-V-1959, S. Hisamatsu (EUMJ); 2 females, 12-VII-1961, M. Miyatake (NIAES). Kyushu. FUKUOKA. 1 male, Chikugo, Mt. Kumadoyama, 1-VI-1958, Y. Miyaue (ELKU). 1 female, Munakata, Mt. Jouyama, 6-IV-1975, K. Kido (ELKU). 1 female, Itoshima, Himeshima I., 3-VI-1990, K. Kido (ELKU). 1 female, Shikanoshima I., 29-IV-1994, K. Morimoto (ELKU). 1 female, Fukuoka, Motooka, 2-VII-1994, K. Morimoto (ELKU). 1 male and 1 female, Mt. Sefurisan, 3-VI-2001, H. Hirano (NIAES). 1 male, Yabe, Mt. Shakagatake, 25-IV-2004, H. Hirano (NIAES). 3 males and 1 female, Nokonoshima I., 17-VI-2003, H. Hirano (NIAES). Mt. Hikosan: 2 males and 3 females, 17–19-V-1967, H. Takizawa (NIAES); 1 female, 4-V-1985, Y. Kajida (NIAES); 2 males and 4 females, 30-V-1995, K. Morimoto (ELKU); 1 female, 26-VI-2003, H. Hirano (NIAES). SAGA. 1 male, Okuhiratani, Mt. Taradake, 23-IV-1989, T. Yasunaga (ELKU). 2 males and 3 females, same data as holotype (NIAES). 2 males and 2 females, Mt. Kusenbuyama, Hakotani-rindou, 8-V-2005, H. Yoshitake, on R. crataegifolius (NIAES). NAGASAKI. 1 male, Shimabara, Taruki, 16-VII-1976, S. Imasaka (NIAES). 1 female, Shimabara, Akamatsudani Gorge, 8-VI-1979, S. Imasaka (NIAES). Mt. Unzendake: 1 female, 25-V-1976, S. Imasaka (NIAES); 1 female, 21-VII-1976, S. Imasaka (NIAES). 1 male and 2 females, Nomozeki, 13-V-1976, S. Imasaka (NIAES). 1 male, Tashirobaru, 21-IV-1977, S. Imasaka (NIAES). 15 males and 12 females, Sasebo, Mt. Eboshidake, 13-IV-1977, J. Okuma (SM). 4 males, Sasebo, Mt. Hattendake, 23-V-1982, J. Okuma (SM). Sasebo, Mt. Yahirodake: 1 male and 1 female, 18-IV-1977, J. Okuma (SM); 2 males, 6-IV-1981, J. Okuma (SM); 1 female, 21-V-1981, J. Okuma (SM); 1 female, 26-V-1982, J. Okuma (SM); 1 female, 29-III-1983, J. Okuma (SM); 1 female, 30-IV-1983, J. Okuma (SM); 1 male, 2-V-1983, J. Okuma (SM); 2 females, 15-V-1984, J. Okuma (SM). 1 male and 1 female, Hiradoshima I., Mt. Yasumandake, 10-V-1980, S. Imasaka (NIAES). KUMAMOTO. 1 male, Gokanoshou, 26–27-V-1978, K. Ohara (ELKU). Izumi, Mt. Shiratoriyama: 1 female, 1300 m, 6-VI-1980 (ELKU); 1 female, 7–8-VI-1989, T. Yasunaga (ELKU). 1 male and 2 females, Yabe, Naidaijin-rindou, 21-VI-1998, H. Kojima (ELKU). OITA. 1 male and 2 females, Kuju Mts., Bougatsuru, 27-V-1988, K. Morimoto (ELKU). KAGOSHIMA. Oosumi-hantou Peninsula, Cape Satamisaki: 1 male, 25-VI-1957, T. Saigusa (ELKU); 1 female, 8-VI-1958, H. Ueno (ELKU). 5 males and 6 females, Mt. Hoyoshidake, 14–15-IV-2002, H. Yoshitake (NIAES). 1 male, Mt. Kobadake, 28-VI-2003, H. Yoshitake (NIAES).HOLOTYPE: 1 male (NIAES), “[Japan: Kyushu]/Mts. Sefuri-sanchi/Mt. Kusenbu-yama/8-V-2005/Hiraku Yoshitake” (printed on white card); “On PageBreakJapan  Kuntze ex Koidz. In addition, adults of this species were collected mostly from Rubus palmatus Thunb. and rarely from Rubus crataegifolius Bunge on Mt. Kusenbuyama, Kyushu.In several localities in Honshu, a number of adults of this species were found on PageBreakTaxon classificationAnimaliaColeopteraCurculionidaeHomorosoma horridula Voss, 1958: 67  . – Homorosoma horridulum : Rhytidosomus insulareScleropteroides horridulusHomorosoma; Taiwan) . : Scleropteroides insulare : Scleropteroides insularis : Scleropteroides hypocrita : Scleropteroides hypocrita on the basis of the following characters: subapical part of the prothorax strongly constricted . LR: 1.04–1.18 . WP: 0.94–1.10 . LP: 0.85–0.95 . WE: 1.61–1.91 . LE: 1.64–1.83 . N = 11 for all measurements. Habitus as shown in Figs Vestiture. Clavate scales long and erect on head, basal 2/3 of rostrum, and pronotum. Hair-like scales long and semierect on apical 1/3 of rostrum. Scales on elytral intervals . LR: 1.06–1.36 . WP: 0.95–1.14 . LP: 0.88–1.04 . WE: 1.63–1.97 . LE: 1.62–2.03 . N = 16 for all measurements.Rostrum . Fujian. 2 males and 2 females, Jianyang, 27°20'N, 118°06'E, 18-IV-1965 896779, 896780, 896781, and 896786); 1 female, Jianyang, Aotou, Sanbanqiao, 27°35'N, 117°39'E, 18-IV-1965 (IZCAS IOZ(E)896788); 1 female, Jianyang, Aotou, Huangbaixi, 27°35'N, 117°39'E, 7-V-1965 (IZCAS IOZ(E)89679); 1 male, Jianyang, Aotou, Daoshui, 27°35'N, 117°39'E, 13-VI-1965 897690). 1 female, Shaowu, PageBreakTieyang, 27°10'N, 117°21'E, 15-V-1965 896789). 1 male, Wuyishan, Xingcun, Sangang, 752 m, 27°44.804'N, 117°40.600'E, 15-IV-2009, J. Huang (ZAFU). 1 female, Wuyishan, Xingcun, Sangang, 752 m, 27°44.804'N, 117°40.600'E, 15-IV-2009, S. Zhang (ZAFU). 1 male, Wuyishan, Xingcun, Qili, 899–912 m, 27°43.302'–27°43.042'N, 117°39.632'–117°39.334'E, 20-IV-2009, J. Tan (ZAFU). 1 female, Wuyishan, Xingcun, Qili, 899–912 m, 27°43.302'–27°43.042'N, 117°39.632'–117°39.334'E, 20-IV-2009, J. Huang (ZAFU). Chongqing. 1 female, Nanchuan, Yixiantian, 700 m, 29.05194°N, 107.12001°E, 12-VI-2010, R. Nie (IZCAS IOZ(E)1803625). TAIWAN. 1 male, Nantou, Sungkan–Meifeng, 25–26-V-1972, M. Sakai (EUMJ). 1 male and 1 female, Nantou, Nanshanchi, 20–23-III-1995, H. Kojima and M. Suehiro (NIAES). 1 male, Mt. Guandaoshan, 16-V-1986, I. Matoba (NIAES). 1 male, Taoyuan, Mt. Daguanshan, 4-IV-1991, H. Kojima (NIAES). KOREA: Gangwondo. 1 female, Chuncheongun, Dongmyeon, Gamjeongri, 21-V-1992, K. Morimoto (ELKU). Kyeongsangnamdo. 1 female, Mt. Jirisan, Samjeongri, 6-VI-1991, J. D. Bae (ELKU). Jeollabukdo. 1 male and 1 female, Namwongun, Nowondan, 5-VI-1991, J. D. Bae (ELKU). 1 female, Namwongun, Deongdongri, 19-VI-1994, H. Kojima (ELKU). PageBreakJAPAN: Nansei Islands. YAKUSHIMA I. Nakama: 1 male, 1-IV-1985, A. Yoshida (NIAES); 1 male and 2 females, 25-III-1991, H. Kojima (ELKU); 4 males and 6 females, 30-III-2005, Y. Kubota (NIAES). AMAMI-OSHIMA I. 1 male, Sutaru-touge Pass, 23-III-1954, T. Mohri (EUMJ). Nishinakama: 1 female, 25-III-1954, T. Edashige (EUMJ); 1 female, 31-III-1968, M. Tomokuni (EUMJ); 1 male, 22-III-1990, T. Ueno (NIAES). Hatsuno: 1 male and 1 female, 24-III-1965, S. Fukuda (SM); 1 female, 12-IV-1971, M. Sakai (EUMJ); 1 female, 11-V-1976, J. Okuma (SM). 1 male, Daikuma, 10-IV-1971, M. Sakai (EUMJ). 1 female, Shinmura, 11-IV-1971, M. Sakai (EUMJ). Mt. Yuwandake: 1 male, 19-IV-1971, M. Sakai (EUMJ); 25 males and 18 females, 25–28-III-2003, H. Yoshitake, on Rubus croceacanthus (NIAES). 9 males and 8 females, Chuo-rindou, 18-III-1991, H. Kojima (ELKU). 2 males, Nangawa-rindou, 20-III-1991, H. Kojima (ELKU); 1 male and 2 females, 22-III-1991, H. Kojima (ELKU). 2 males and 5 females, Mt. Akatsuchiyama, 21-III-1991, H. Kojima (ELKU). UKEJIMA I. 1 male, 22-III-2004, K. Takahashi (NIAES). OKINAWAJIMA I. 1 female, Yona, 10-IV-1975, S. Imasaka (NIAES). 1 male, Oku, 15–18-V-1978, T. Tsutsumi (ELKU). 2 males and 1 female, Mt. Yonahadake, 16-IV-1991, H. Kojima (ELKU).PageBreakChina , Korea , Japan  had examined it and confirmed its taxonomic identity. Also, our examination of a long series of Scleropteroides specimens from the type locality, Amami-Oshima Island, revealed that only one species of this genus occurs on the island.In the study, we could not examine the holotype of PageBreakScleropteroides was established as a genus allied to Scleropterus in the tribe Scleropterini , as well as characteristics common to Scleropterus . Therefore, the diagnostic differences between the two genera must be clarified.Previously, Scleropteroides is close to Scleropterus in sharing a rounded apex of the antennal scape, a six-segmented antennal funicle, a pronotum with neither tubercules nor prominences, elytral intervals bearing small and acute squamate granules usually in a row, a rostral channel extending to the metaventrite, and appendiculate claws. In addition, the close affinity between the two genera is emphasized by similarities in structures of the male and female genitalia.Morphologically, Scleropteroides in this study as follows: 1) eyes convex  avex Figs , 36, 38;vex Figs , 36, 38;vex Figs ; 6) scutvex Figs , 34–39; vex Figs ; 8) elytvex Figs , 37, 39;vex Figs , 37, 39;vex Figs ; 11) provex Figs ; and 12)PageBreakScleropterus has the following defining characteristics: 1) eyes flattened; 2) antennal scape fringed with 3–4 minute hairs at the apex; 3) basal margin of the pronotum nearly straight; 4) basal half of the pronotum with a weak longitudinal median sulcus; 5) apical margin of the pronotum slightly descending; 6) scutellar shield vestigial, usually invisible from above; 7) hind wings vestigial; 8) elytral humeri vestigial; 9) odd numbered intervals of the elytra wider and more prominent than even numbered intervals; 10) femora edentate; 11) protibiae incurved apically; and 12) meso- and metatibiae mucronate in both sexes.In contrast, Scleropterus, however, Scleropteroides clearly differs from Scleropterus in having a pronotum lacking a sulcus, even elytral intervals, dentate femora, and simple protibiae. Additionally, Scleropteroides can also be distinguished from Scleropterus by the meso- and metatibiae lacking mucrones in females.The most apparent differences between the two genera are the structure of the hind wings (character 7) and associated characters . Apart from these differences associated with hind-wing reduction in Scleropteroides comprises three East Asian species – Scleropteroides hypocrita, Scleropteroides horridulus, and Scleropteroides longiprocessus. They are very similar in general appearance, as well as in general structures of male and female terminalia, but can be distinguished clearly by several consistent, taxonomically important morphological differences as shown in the following lines.Our extensive and detailed examination of a large number of specimens revealed that Scleropteroides hypocrita is characterized mainly by a moderately constricted prothorax in the subapical part , Korea, and Japan  in Korea and Japan, whereas Scleropteroides longiprocessus was observed feeding on Rubus palmatus in Honshu and Kyushu, and Scleropteroides horridulus on Rubus croceacanthus in the Ryukyus. In two localities in Toyota City, Honshu, Japan, adults of Scleropteroides hypocrita and Scleropteroides longiprocessus were found separately on Rubus microphyllus and Rubus palmatus var. coptophyllus, respectively . Similarly, on Mt. Kusenbuyama, Kyushu, Japan, adults of Scleropteroides hypocrita and Scleropteroides longiprocessus were collected separately on Rubus crataegifolius and Rubus palmatus, respectively, except a few individuals of Scleropteroides longiprocessus collected simultaneously with Scleropteroides hypocrita on Rubus crataegifolius. These observations suggest that Scleropteroides species might show some differences in host use in localities where they occur sympatrically. As mentioned above, Scleropteroides hypocrita is sympatric with Scleropteroides longiprocessus in Japan and with Scleropteroides horridulus in South Korea (Scleropteroides species, especially in sympatric localities.Presently, ecological information on ot clear . Howeverth Korea . FurtherCeutorhynchinae utilizes the same host plant in the adult and larval stages (e.g., Scleropteroides weevils would be suspected to be associated with Rubus species in their larval stage. Scleropteroides adults appear before and during the flowering season of Rubus and were frequently found on reproductive organs of the plants. Further surveys focusing on larval food sources are necessary to elucidate the host plant associations of Scleropteroides weevils.Generally, each species in the subfamily es e.g., . TherefoScleropteroides is limited to East Asia (Figs Scleropterus, which is widely distributed from Central Europe through Central Asia to East Asia (The distribution of sia Figs –134, in ast Asia .PageBreakScleropteroides hypocrita is distributed in northeast China, North and South Korea, and Japan (Fig. Scleropteroides longiprocessus is restricted to Japan (Fig. Scleropteroides horridulus is distributed from Fujian through Taiwan to the Nansei Islands and in South Korea (Figs Scleropteroides hypocrita at least in the Korean Peninsula (pan Fig. , whereaspan Fig. . The twopan Fig. . Furtherrea Figs –134. Thieninsula , but theScleropteroides, especially in continental China and the Korean Peninsula. In addition, this genus has never been recorded from the southern part of the Russian Far East. Since the distribution of Scleropteroides strongly suggests its occurrence in these regions, further surveys are necessary to elucidate the range of the genus and that of each species.Currently, a considerable gap still remains in the distribution of PageBreak