Morphological variation in the mangrove-inhabiting scale insect Aulacasprs australis BRIMBLECOMBE (1959) has been examined on the basis of about 250 specimens of the adult female collected on the coast of Queensland, Australia. These specimens are variable in some features geoclinally, locally, individually, or ecophenotypically. Six specimens from the type series of another mangrove scale, Aulacaspis martini WILLIAMS and WATSON (1988), which was described from the northeastern coast of Papua New Guinea, are almost entirely included within the range of variation observed in the specimens from Queensland. A. australis and A. martini are no longer discrete from each other morphologically, and should be treated as synonyms, the synonymy remaining to be confirmed by examination of further material from New Guinea.

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Ten species of diaspidid scale insects are recorded as occurring on mangroves in Australia in addition to another mangrove scale, Aulacaspis australis, which has been known from Queensland. Two of them, Poliaspis incisa from Northern Territory and Aulacaspis constricta from Northern Territory and Western Australia, are described as new species, and the other eight species are recorded from Queensland or Northern Territory. Poliaspis incisa should have originated from an inland form occurring in Australia, whereas Aulacaspis constricta and Aulacaspis australis or their immediate ancestors are supposed to have spread from tropical Asia through stepping-stone routes in Wallacea to the western and eastern coasts of Australia.

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Nine new Strongylium species from Southeast Asia are described: Strongylium salvazai sp. nov. (Vietnam), S. putaoense sp. nov. (Myanmar), S. perakense sp. nov. (W. Malaysia), S. dilutipes sp. nov. (The Philippines), S. palopoense sp. nov. (Sulawesi), S. emasense sp. nov. (N. Borneo), S. pangkorense sp. nov. (W. Malaysia), S. sodongense sp. nov. (E. Java), and S. takalaense sp. nov. (Borneo).

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A new species of the genus Stenus LATREILLE, S. bifurcatus, is described from Mie Pref., central Japan. This new species belongs to S. kasumi species group, and is closely allied to S. zdenae HROMADKA, 1990, from Gunma Pref., central Japan, but it is clearly separable from the latter by such characters as the coloration, structure and size of the body, and the aedeagus and its endophallic structure.

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A new species of the staphylinid genus Erichsonius is described under the name of E. (Sectophilonthus) taiwanus. It was obtained from under dead leaves accumulated at the streamside in broadleaved forests of South Taiwan.

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Lasioglossum (Evylaeus) politum pekingense (BLUTHGEN, 1925) is recorded from Shikoku, Kyushu, and Tsushima in Japan for the first time. The female metasoma presents three types of color variation: black, reddish brown, and intermediate forms. These color patterns suggest link with the geographical distribution.

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This is the first record of genus Eupiestus KRAATZ, 1859 from Japan. A new species Eupiestus iriomotensis is described from Iriomote Is., Nansei Islands, Japan.

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Piestoneus deboiseae NAOMI, 1995 is newly placed in synonymy with P. lewisiz SHARP, 1889; and Dianous morimotoi NAOMI, 1988 is newly placed in synonymy with D. japonicus SAWADA, 1960.

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A new replacement name, Languriomiccolamia nom. nov. is proposed for Languriomorpha FISHER, 1925 (Coleoptera, Cerambycidae) by homonymy.

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Minialula poeciloptera PAPP is recorded from Japan (Amamioshima Is., Okinawa-honto Is., Ishigaki Is. and Iriomote Is.) for the first time. This genus and species were formerly collected only from Taiwan.

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Two new species, Paralimosina nigriceps and P. taiwanensis, are described and illustrated, and P. bracteata ROHACEK et PAPP and P. choochotei HAYASHI are newly recorded from Taiwan.

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The Japanese record of Botanophila fugax (MEIGEN, 1826) by SUWA (1998) is found to be based on specimens classified into two species. One is the true B. fugax. The other is concluded as new to science and is described under the name Botanophila cognata.

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Based on the rearings in Nakagawa, Tochigi Prefecture, central Honshu, in 2009 to 2010, host plants are recorded for two species of the sawfly genus Conaspidia KONOW, 1898 (Hymenoptera, Tenthredinidae), Aralia elata (MIQ.) SEEM. (Araliaceae) for C. singularis (MALAISE, 1931) and A. cordata THUNB. (Araliaceae) for C. hyalina SATO, 1933. The two Conaspidia species probably have two generations a year in Nakagawa and the larvae are monophagous and solitary. The last instar larvae of the two species can be distinguished by the number of the black spots on the trunk.

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Five new species, Ceropria ogawai sp. nov., Ceropria takasukai sp. nov., Ceropria gorontalensis sp. nov., Ceropria celebiana sp. nov., Ceropria yamanei sp. nov., are described mainly from Gorontalo prov., the northern Sulawesi. Ceropria sulawesiensis MASUMOTO, 1995 is first recorded from Gorontalo Prov.

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Two Thai species of Ergania, E. siamensis HELLER and E. baudii FAUST, are treated. The latter species is newly recorded from the country. Peculiar feature of Ergania on the mandibles and that of the tarsus in E. baudii are also introduced.

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Megorchestes bolovenensis gen. et sp. nov. is described from southern Laos. The adults were captured on Litsea sp. (Lauraceae). Megorchestes may be related with Synorchestes Voss, 1958 from China and Taiwan, and the relationship is discussed.

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A new genus and species of the subfamily Oxyinae is described under the name of Boninoxya anijimensis from Ani-jima, the Ogasawara Islands, Northwest Pacific.

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A new species belonging to the iwatai species group of the genus Ceratina is described under the name of C. yonagunensis from Yonaguni Island of the Ryukyus, Japan. Close relatives of the new species are discussed. A key to the iwatai species group is provided.

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Four species of Dermestidae are recorded from DPR Korea. Trogoderma teukton BEAL is first recorded from that country.

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The Japanese species of the genus Cyparium ERICHSON are reviewed. A new species, Cyparium jiroi sp. nov., is described from Kyushu, Japan. Two known species, C. laevisternale NAKANE and C. mikado ACHARD, are shown their diagnoses with illustrations of antennae and genitalia in both sexes. A key to the Japanese species is given. The female genital structures of Cyparium are illustrated for the first time.

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Two ichneumonid species belonging to Banchinae, Lissonota (Loxonota) kaiyuanensis UCHIDA and Syzeuctus coreanus UCHIDA are newly recorded from Japan. The former is the first representative of the subgenus Loxonota AUBERT from Japan.

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