Abstract: Searching behavior of the larvae of Harrnonia axyridis (Pallas) was studied with Nakamuta apparatus (1982), under two illumination conditions. The results show: 1.Feeding stimulus can induce a switchover of searching behavior from area-dissipated type toarea-concentrated type; 2. The longer the feeding time, the higher the giving-up time (GUT) value; 3. The GUT is determined by the size of prey at the final feeding; 4. Light illumination has influence on searching behavior and 5. The degree of starvation has certain in-fluences on GUT.

Key words: Harmonia axyridis (Pallas), searching behavior