Abstract: The biology of Neochrysocharis okazakii Kamijo, one of the most import ant parasites of the vegetable leafminer, Liriomyza sativae Blanchard in Fuzhou, was studied. The results showed: (1) honey supply could significantly prolong survival time of the adult parasites; (2) developmental rates of each stage of N. okazakii were linearly correlated to temperature between 20℃ to 33℃. The threshold temperature and the effective accumulated temperature for the whole generation was estimated to be 81℃ and 188.7 day-degrees respectiely. The life-span of the parasite shortened as temperature went up, and its intrinsic rate of natural increase (r_m) became greater with increasing of emperature.

Key words: Neochrysocharis okazakii, biological characteristics, temperature, population parameter, Neochrysocharis okazakii;biological characteristics;temperature, populati on parameter