A new species, Acanthosoma ishiharai (Heteroptera, Acanthosomatidae) is described from Japan. The habitus, male and female genital structures are illustrated. A key to the Japanese species of the genus is also given.

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Five species of Dryinus were recorded from Laos. Dryinus chenae, D. expolitus, D. orientalis, and D. pyrillae are newly recognized.

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The species of Siobla CAMERON from Taiwan, China are revised. Three new species are described: Siobla joveata NIU and WEI, sp. nov., S. robustiserrula NIU and WEI, sp. nov. and S. tenuitibialis NIU and WEI, sp. nov. Siobla insularis MALAISE, 1945 is synonymized with S. taiwanica MALAISE, 1945. Siobla straminea immaculata WEI, 2002 and Siobla schedli HARIS, 2007 are synonymized with S. maxima TURNER, 1920. The female of S. fumipennis MALAISE, 1945, the males of S. formosana TAKEUCHI, 1927 and S. taiwanica MALAISE, 1945 are described for the first time. A key to the eight known species of Siobla from Taiwan is provided. S. fulva TAKEUCHI, 1927, S. formosana TAKEUCHI, 1927, S. jumipennis MALAISE, 1945, S. taiwanica MALAISE, 1945 and S. maxima TURNER, 1920 are redescribed because the original descriptions of them were brief.

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Two new apterous staphylinid species of the genus Lathrobium from Okayama Prefecture in western Honshu, Japan, are dealt with. One of these species seems to be related to L. taishakuense Y. WATANABE, while the other is remarkable in having peculiar genital organ in the male. They are described under the names L. (L.) aonoi and L. (L.) suzukii.

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A new genus and a new species of Cephidae are described from Henan, East China: Heterojanus magnoliae gen. et sp. nov. The new genus is a member of the tribe Hartigiini of Cephidae. A key to the seven known genera of Hartigiini s. str. is provided.

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Ochyromera kalshoveni sp. nov., is described from Laos, Thailand and Indonesia (Java) as a potential pest of medicinally useful tree, Nauclea orientalis. The larva is a fruit-borer and the adult feeds on leaves of it.

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The type material of the Taiwanese species of Cyparium and Toxidium described by MIWA and MITONO is studied Cyparium formosanum is redescribed and a lectotype is designated Cyparium monticola is placed in synonymy with Pseudobironium languei, and a lectotype and paralectotypes are designated for the former. Cyparium montanum and Toxidium villosum are reported from Taiwan for the first time. Pseudobironium hisamatsui sp. nov. is described from Taiwan. Lectotype and paralectotype are designated for Toxidium formosanum, a species currently placed in Scaphobaeocera. Keys to the Asian species of Cyparium and to the Taiwanese species of Pseudobironium are provided.

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Based on field observations and rearings in 2010 to 2011 in Mureung valley, Gangwon-do, Korea, host plants are newly recorded for two pamphiliid sawflies belonging to the genus Onycholyda. Agrimonia pilosa(Rosaceae) is the host of Onycholyda nigroclypeata SHINOHARA, 1987, and Rubus parvifolius L. (Rosaceae) is the host of Onycholyda odaesana SHINOHARA and BYUN, 1993. The host and larva of 0. nigroclypeata have been unknown. Brief descriptions of the larvae and notes on the life history of the two species are given

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Based on the rearing in Hokkaido, Japan, Macrodiervilla middendorffiana (Caprifoliaceae) is recorded as a host plant of Pamphilius lobatus MAA, 1950. Notes on rearing of the species and a brief description of the last instar larva are given. This is the first record of the host plant and immature stages of P. lobatus.

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The genus Perimesosa ZHANG et al., 1994 is a junior homonym of Mesosa (Perimesosa) BREUNING, 1939, and we propose a substitute name as Plesiomesosites nom. nov.

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The taxonomic status of Malachius okinawaensis NAKANE, 1985 is revised based on the male characteristics. It is cleared that this species belongs to the genus Clanoptilus MOTSCHULSKY, 1853.

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Middle instar larva of Carphurus pengaronae CHAMPION, 1923 is described for the first time with some biological notes.

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A new species, Oosternum okinawaense HOSHINA, sp. nov., is described from the Okinawa Island, the Ryukyus, Japan. The present new species is similar to 0. shigehisai HOSHINA et SATO, 2004 and belongs to 0. soricoides group. The number of Japanese species of the genus Oosternum increases to six.

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The collection of Calliphoridae during the surveys on flies of medical and forensic importance in Thailand from 1975 to 2010 is dealt with. A total 27 genera and 93 species of the blow flies are listed. Thirty species including Calliphora vicina ROBINEAU-DESVOIDY are newly recorded from Thailand. One new species of the genus Isomyia WALKER is described and illustrated, which is similar to Jsomyia nebulosa (TOWNSEND, 1917) from Assam, India and Lower Burma. Revised keys to the Thai species are provided to include the new and newly recorded ones.

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Eulimosina dudai (PAPP) is recorded from Sri Lanka, Nepal, Sulawesi Is. (Indonesia) and Japan for the first time.

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The Japanese species of Pentaphyllus DEJEAN, 1821 are reviewed. The following new synonymies are proposed (senior synonyms first): Pentaphyllus ensifera (FAUVEL, 1904) = P. dilatipes SHIBATA, 1978, syn. nov.; P. biconiger GEBIEN, 1914 = P. lewisi KASZAB, 1982, syn. nov.; P. quadricornis GEBIEN, 1914 = P. philippinensis KASZAB, 1956, syn. nov.; P. ensifera (FAUVEL, 1904) = P. punctatus KULZER, 1957, syn. nov.; P. quadricornis GEBIEN, 1914 = P. tokarensis NAKANE, 1963, syn. nov.; P. oblongus LEWIS, 1894 = Sakaiomenimus todai ANDO, 2003, syn. nov.; and this species is a member of the genus Sakaiomenimus ANDO, 2003 Lectotypes of Pentaphyllus biconiger GEBIEN, 1914 and Pentaphyllus quadricornis GEBIEN, 1914 are designated. An identification key to the Japanese species is given.

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Ceutorhynchus wasabi YOSHITAKE, sp. nov., is described from Hokkaido and northern Honshu, Japan. This species is characterized mainly by the body with a blue luster, metallic blue elytra that are widest just behind the humeri and then gradually narrowed to the middle, unarmed femora, and lateral pieces of meso- and metasterna with dense punctures, each of which bears a light-colored stout scale. This species is associated with wasabi, Eutrema japonicum (Brassicaceae), and is known as a pest of field-cultivated wasabi in Iwate Prefecture.

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A new species, Miobdelus morimotoi, is described from Yunnan, China, and some notes on the generic characteristics are given

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A new Strongylium species from N. Vietnam, S. takeshianum sp. nov. is described. Two named species, S. khaosoidaoense MASUMOTO and S. yoshitomii MASUMOTO are redescribed on the basis of males from Thailand and Laos, respectively. A key for the mentioned species and their relative, S. kohanemum MASUMOTO, is also provided

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Twelve new species are described from Thailand. They are under the following names: Strongylium ngaiense sp. nov., S. snizeki sp. nov., S. khaolakense sp. nov., S. yalaense sp. nov., S. phuchongense sp. nov., S. pakchongense sp. nov., S. phaknabense sp. nov., S. huaianaense sp. nov., S. ratchashimaense sp. nov., S. kondoi sp. nov. S. naamum sp. nov., and S. nayoiense sp. nov.

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Tapeinotus sellatus (FABRICIUS) is recorded from Aomori and Niigata Prefectures, northern Honshu, for the first time from Japan. This species utilizes Lysimachia vulgaris var. davurica (Primulaceae) as its host in Aomori Prefecture.

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So-called Cnroranidea signatipes in Taiwan is found as a distinct species, when compared with true C. signatips in mainland China. Thus Cneoranides bicoloripes (CHUJO, 1962) becomes valid since it is only available name for Taiwan population of Cneoranidea signatipes CHEN. Cneoranidea bicoloripes (CHUJO) is redescribed herein in detail on comparison of true C. signatipes CHEN.

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The species of Agonita in Taiwan are reviewed. Three species are recognized and redescribed: A. tricolor (CHUJO), A. unicolor (CHUJO), and A. omoro TAKIZAWA (New Country Record). New host plant records are provided for all three species. An updated key to the Taiwan species is presented.

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Lasioglossum (Lasioglossum) primavera is recorded from Shikoku and Kyushu, western Japan, and the Korean Peninsula, for the first time. Distribution, diagnosis, and some bionomical notes are presented.

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Caliroa nara sp. nov. (Hymenoptera, Tenthredinidae) is described from Japan (Hokkaido and Honshu) and Korea. The larvae are gregarious leaf feeders on Quercus spp. Severe defoliation by the sawfly has been observed in Aomori Prefecture, Honshu, Japan since 2004 and in Gyeongsangbuk-do, Korea from 1996 to 2000. A Chinese species, C. angustata FORSIUS, 1927, is redescribed based on the holotype. The diagnostic characters of a Holarctic species, C. annulipes (KLUG, 1816), are discussed.

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A new species of the genus Platypelochares CHIAMPION, P. chinensis sp. nov., is described from China.

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Four remarkable new species of scutacarid mites, Archidispus shirahatai, A. sclerodermus, A. tokyoensis and A. aokii, are described from Japan on the basis of phoretic females found on carabid beetles belonging to the tribes Patrobini, Harpalini, Pterostichini, Platyni, Sphodrini and Amarini. Each species is easily recognized by several differently modified coxal setae and some other characteristics.

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Spinapalochrus PIC, 1919, previously treated as a subgenus of Opisthapalochrus EVERS, 1987, has to be treated as valid name for this genus because it has priority. Opisthapalochrus becomes a valid subgenus of Spinapalochrus. The status of two new taxa is changed and four new combinations are proposed accordingly.

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The malachiid-beetles belonging to the subfamily Malachiinae mostly collected at rice paddies and around villages in Laos are listed. A total of three genera and seven species are recognized including five species new to the fauna of this country. Habitus photographs and some biological information are provided.

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Three new species of the genus Heterlimnius are described from China and Vietnam: H. amabilis, H. ikedai and H. vietnamensis. Two species-groups are proposed in this genus: the corpulentus and the amabilis species-groups. Keys for all species of the Heterlimnius amabilis species-group and a checklist of the genus Heterlimnius are provided.

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A new Japanese anthicid species of the genus Mecynotarsus, M. antennalis sp. nov., is described and illustrated with the most related species, M. niponicus LEWIS, 1895. The confusion in identification between two species is discussed.

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Exochomoscirtes hajeki sp. nov. and E. carinensis sp. nov. are described from Malaysia and Myanmar respectively. New records of E. discoidalis (Pre), E. klausnitzeri RUTA & YOSHITOMI, and E. cf heinrichdathei KLAUSNITZER are reported. Studies of female genitalia of species externally resembling E. heinrichdathei revealed presence of several common features that may suggest close relationship between these species.

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