Abstract
Overwintering adult female Brevipalpus lewisi feed on the new lower leaf surface of M. glyptostroboides and aggregate along the mid-vein in mid-May, depositing oval reddish eggs on the petiole in four to eight clusters. The population markedly decrease during the Meiyu season (East Asian rainy season) of June and early July, but increase and disperse over the plants in late July and early August. Afterwards, the population grow quickly and reach the highest density in late September. Finally, in late November, the adult female mites overwinter in the leaf sheath of current-year and one-year-old twigs. Premlinary observations suggest B. lewisi developmental rates are strongly influenced by the environmental conditions, especially temperature and rainfall. Dry and low-rainfall make the mites most virulent, leading to the outbreak period from August to October.
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