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Leptocybe invasa produces four generations a year in Guangzhou city, lives through the winter as the nymph and pupae，the first generation to 4th generation had the longest life span respectively for 100 days, 64 days, 68 days and 133 days. In variable temperature condition, developmental starting point 4.0408 x 1015 + 0.0266 temperature ℃, effective accumulated temperature 1776.3964 day degrees. In eucalyptus grows areas in south China , the Hainan island in the south and west coastal areas happened 5 generations area in a year, Hainan island in the central and north of area, all Guangdong province area, Guangxi municipality in the central and south of area, Yunnan province in the south of area and Fujian province in the south-central coastal areas happened 4 generations area in a year, other areas happened 3 generations area in a year.
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