Arthropod galls found on Kodakarajima and Takarajima, the Tokara Islands, Japan

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  • Tokuda Makoto
    Laboratory of Systems Ecology, Faculty of Agriculture, Saga University

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  • トカラ列島の小宝島と宝島で確認された虫えい
  • トカラ レットウ ノ ショウタカラジマ ト タカラジマ デ カクニン サレタ チュウエイ

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Abstract

<p>Arthropod galls were surveyed in 2015 and 2016 on Kodakarajima and Takarajima, the Tokara Islands, Japan. Six sorts of gall consisting of two induced by Phlaeothripidae (Thysanoptera), one by Triozidae (Hemiptera) and three by Cecidomyiidae (Diptera) were found on Kodakarajima, and ten sorts comprising two by Phlaeothripidae, two by Triozidae, four by Cecidomyiidae and two by Eriophyoidea (Acari: Trombidiformes) were confirmed on Takarajima. All six sorts of gall on Kodakarajima and nine sorts (=except one cecidomyiid gall) on Takarajima were newly recorded from these Islands in this study. In addition, the present study provides the southernmost records of two cecidomyiids, Asteralobia soyogo inducing axillary bud galls on several species of Ilex (Aquifoliaceae) and Rhopalomyia chrysanthemum responsible for leaf galls on Chrysanthemum species (Asteraceae). At the same time, Chrysanthemum ornatum var. tokarense is newly recorded as a host plant of R. chrysanthemum.</p>

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