Abstract
The diurnal searching activity of adult Ascogaster reticulatus WATANABE (Hymenoptera: Braconidae) was observed in a tea field by walking along the rows of tea plants and capturing all adult parasitoids found on the plants. The peak number of insects was collected at 07:00 or 08:00 and the number decreased in the late morning to afternoon. The sex ratio of these adults was male-biased (86% male). Adults spent most of the time in searching by walking on leaves rather than by flying from leaf to leaf. The average flight distance between leaves was about 15cm. The tendency to spend a lot of time in searching on a leaf is well correlated with the oviposition and mating behavior of this species.
