The genus Acanthosoma in Taiwan (Hemiptera: Heteroptera: Acanthosomatidae) Author Tsai, Jing-Fu Systematic Entomology, Graduate School of Agriculture, Hokkaido University, Sapporo, 060 - 8589 Japan; e-mail: jingfu. tsai @ gmail. com Author Rédei, Dávid Institute of Entomology, College of Life Sciences, Nankai University, Weijin Road 94, 300071 Tianjin, China; e-mail: david. redei @ gmail. com & Department of Zoology, Hungarian Natural History Museum, H- 1088 Budapest, Baross u. 13, Hungary text Acta Entomologica Musei Nationalis Pragae 2015 2015-12-31 55 2 625 664 journal article 10.5281/zenodo.5303571 0374-1036 5303571 0360453D-E09E-4CC4-9BB0-981AEC7BED66S Acanthosoma crassicaudum Jakovlev 1880 Acanthosoma crassicaudum Jakovlev, 1880: 386 , 390. Lectotype ( DERZHANSKY et al. 2002: 362 ): J, Russia : Vladivostok; ZMAS. Acanthosoma glaucum Esaki, 1916: 125 . Syntypes : J, ♀ , Japan : Honshiu [= Honshu]: Mt. Minomo and Kyoto ; ELKU. Synonymized by ESAKI (1926: 200) . Acanthosoma crassicaudum : KERZHNER (1964: 364) (records), KANYUKOVA (1988: 914) (in key, figure, distribution), KWON et al. (2001: 366) (catalogue, host plants, records,distribution), GÖLLNER- SCHEIDING (2006:167) (catalogue, distribution), YAMAMOTO et al. (2009: 33) (host plant), YAMAMOTO & HAYASHI (2011: 150) (in key), YAMAMOTO & HAYASHI (2012: 503) (redescription, host plants, distribution). Acanthosoma crassicauda : LETHIERRY & SEVERIN (1893: 252) (catalogue, distribution), KIRKALDY (1909: 171) (catalogue, distribution), ESAKI (1926: 200) ( type material, diagnostic characters, records, distribution, synonymy), HOFFMANN (1935: 101 , 184) (catalogue, distribution), ISHIHARA (1947: 69) (listed, figures), ESAKI (1950: 203) (redescription, habitus, distribution), MIYAMOTO (1962: 81) (redescription, host plant, phenology, distribution), LEE (1971: 214) (in key), 217 (redescription, photo, figure, records, distribution), 501 (catalogue, distribution), HIURA (1977: 106) (listed, figure, distribution), JOSIFOV & KERZHNER (1978: 165) (records), VINOKUROV et al. (2010: 225) (catalogue, distribution), ZHENG & LIN (2013: 99) (redescription, photo). Material examined. TAIWAN : MIAOLI CO.: Mt.Xue, black forest [ Abies kawakamii forest], ca. 3300 m , 12.xii.2010 , leg.Y.C. Liao ( 1 ♀ NCHU ). NANTOU CO.: Aowanda National Forest Recreational Area, near bird watching platform, 1265 m , 30.v.2011 , UV light, leg. W.M. Hunting ( 2 ♀♀ NCHU ). Diagnosis. A large, robust species (body length 17.5–19.5 mm ) readily recognizable based on the following combination of characters: humeri rounded, not produced; connexival plates with broad (as wide as or wider than tibia) black markings enclosing intersegmental sutures; posterolateral angle of pronotum with a small, triangular process directed posteriad and extending over base of corium; genital capsule of male large, robust, with short, broad, apically rounded lateral projections not surpassing apex of membrane, ventrally densely pilose, provided with 1+1 pigmented denticles subapically and 1+1 denticles proximally; posterior margin of laterotergites VIII of female broadly rounded. ESAKI (1926 , 1950 ), ISHI- HARA (1947), MIYAMOTO (1962) , LEE (1971) , HIURA (1977) , KANYUKOVA (1988) , YAMAMOTO & HAYASHI (2012) and ZHENG & LIN (2013) provided redescriptions and illustrations which are useful for recognizing this species. Bionomics. The species feeds on Prunus buergeriana Miq. (Rosaceae) in Japan ( YAMAMOTO et al. 2011 ). Several other Prunus species ( P. avium (L.) L., P. donarium Siebold , P. glandulosa Thunb. , P. ishidoyana Nakai , P. nakaii H.Lév. , P. leveilleana Koehne , P. mume Siebold & Zucc. , P. padus L., P. salicina Lindl. , P. sargentii Rehder , P. serrulata Lindl. , P. yedoensis Matsum. ) were recorded as its host plants in Korea ( KWON et al. 2001 ). The host plants in Taiwan are unknown. Distribution. The species occurs in the Russian Far East, Korea and Japan . It was recorded from Taiwan by ZHENG & LIN (2013) without precise locality; we present the first exact record for the country. It is apparently rare all over its distribution area. It was recorded from Fujian Province (Jianyang) of China by HSIAO & LIU (1977) . The specimen photographed by the authors ( HSIAO & LIU 1977 , plate 29 fig. 409) (label data: Fujian , Jianyang, Huangkeng, 8.vi.1965 , leg. S.L. Liu, preserved in NKUM) was examined in connection with the present study, and it is identified as a female of A. denticaudum Jakovlev, 1880 . The subsequent records of A. crassicaudum from Fujian ( CHAO 1982 , LIN et al. 1999 , HUA 2000 ) are apparently based on HSIAO & LIU (1977) . Due to the confusion about the identity of this species in the Chinese literature we consider the record from Henan ( ZHENG et al. 1999 ) as questionable. We could not see any specimens which could prove occurrence of the species in the country, therefore, although the species likely occurs in the northeastern part of China , it is deleted from the Chinese fauna until voucher specimens could be located. Summary of known records: RUSSIA : FAR EAST TERRITORY: Primorsky Krai ( KERZHNER 1964 , VINOKUROV et al. 2010 ). — JAPAN : HONSHU: Ueda!, Nagano ! (SEHU); KYUSHU: Mt. Hiko!, Fukuoka !, Kirishima! (SEHU); SHIKOKU ( YAMAMOTO & HAYASHI 2012 ). — KOREA : NORTH ( KWON et al. 2001 ); SOUTH: Kyongsangbuk Prov., near Kimchon, Chikchi-sa! (HNHM). — CHINA ?: HENAN ? ( ZHENG et al. 1999 ). — TAIWAN : MIAOLI CO. !; NANTOU CO. !