Abstract: The behavioral responses of Anastatus japonicus to Nuo Mi-Ci, Gui Wei and San Yue-Hong, the litchi varieties damaged by the litchi stink bug, Tessaratoma papillosa adults, were tested by Y-tube olfactometer. The results indicated that only if a Nuo Mi-Ci plant was harmed by more than 3 adults of T. papillosa, the attraction to A. japonicus was notable. While the attraction produced by healthy San Yue-Hong plants was per se distinct, the effect, however, could be boosted up to a higher extent after the plant was mechanically damaged by pests. The responses of A. japonicus to healthy Gui Wei plants, mechanical damaged ones and pests damaged ones were similar. The above-mentioned three varieties showed the  highest attraction to A. japonicus in the second day after they were damaged by T. papillosa adults, and then the effects declined gradually. The defensive reaction of pests damaged San Yue-Hong was much faster than the others, while the taxis of A. japonicus to Gui Wei was always at a relatively low level.

Key words: Anastatus japonicus, Tessaratoma papillosa, litchi varieties, behavioral response