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Abstract |
Among 11 Fagus species (Fagaceae) recorded in the world, only 4 species, Fagus sylvatica, Fagus hayatae, Fagus crenata, and Fagus japonica are known to be galled by Cecidomyiidae (diptera). In 2000 we... attempted to find midge galls on Fagus multinervis on Ulleung Islands, Korea, and to reconfilm the absence of midge galls on Fagus grandifolid in USA and on Fagus mexicana in Mexico. No Fagus midge gall was found on the island and in North America and we placed reliance on the absence od midge gall in these areas based on the total number of Fagus leaves examined. We discussed possible explanations for the distribution pattern of Fagus gall midges in relation to the distributional sift of Fagus under global climatic changes in the past.show more
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