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前言自从1976年5月在日本爱知县首次发现稻水象甲以来,1978年在三重、岐阜和静冈县,1979年在滋贺县,1980年在福井、奈良、长野县以及大阪府和东京都,1981年在兵库和和歌山县等地不断发现其发生,分布不断扩大,。到1981年为止,已发生稻水象甲的府县达12个。在这六年里,其分布情况是从已发生的县向邻近县扩大,然而,1982年在石川县和茨城县确认其发生以后,北陆和关东地区各县以及东北、中国和四国地区都相继发生,1982年新发现的县达到16个,和已发生的县合在一起,其分布已扩大到28个府县。
Preface Since the first discovery of rice water weevil in Aichi Prefecture, Japan in May 1976, it was conducted in Mie, Gifu and Shizuoka prefectures in 1978, Shiga Prefecture in 1979 and Fukui, Nara, Nagano, and Osaka prefectures in 1980 and Tokyo In 1981, they were constantly found in areas such as Hyogo and Wakayama that are spreading and expanding. By 1981, there were 12 prefectures in which rice water weevil had occurred. In the past six years, their distribution expanded from nearby counties to neighboring counties. However, after Ishikawa Prefecture and Ibaraki Prefecture confirmed their occurrence in 1982, all the counties in Hokuriku and Kanto regions as well as northeast, China and four countries In succession, the number of newly discovered counties in 1982 reached 16, together with the counties that have occurred. Their distribution has expanded to 28 counties.