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Mitsuaki Sutou1): The Bibionidae (Diptera) of the Akasaka Imperial Gardens and the Tokiwamatsu Imperial Villa, Tokyo
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Soil Ecology Research Group, Graduate School of Environment and Information Sciences, Yokohama National University, Tokiwadai 79ῌ7, Hodogaya-ku, Yokohama, 240ῌ8501 Japan
E-mail: [email protected]
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Mem. Natn. Sci. Mus., Tokyo, (39), March 25, 2005
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5ῌ7῍, 10.VI.2003, AK, MT; 12ῌ5῍, 10.VI.2003, TO, MT.
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Four species of bibionid flies, Bibio rufiventris, B. tenebrosus, B. adjunctus and Plecia adiastola are recorded from the Akasaka Imperial Gardens and Tokiwamatsu Imperial Villa, Tokyo, Japan. The larvae of these species are known to live gregariously in soil humus.Bibio rufiventrisis distributed in Tokyo and its adjoining Prefectures (Kanagawa, Saitama, Chiba), and seems a common species at least in central Japan. Above four species are also recorded from a small forest in Yokohama city, Kanagawa Prefecture.
Therefore, this species composition may be characteristic for a small fragmented forest in the urban area of Tokyo.
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OP·¸¹>Gº?»¹>@ 271
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