Abstract: In the protected tomato field, the five points sampling method was used to record the species and quantities of insects trapped on yellow templates. The basic characteristics of the insect community were analyzed using basic features of the community characteristics index, and temporal dynamics of the insect community characteristics were clustered using hierarchical clustering methods. The study indicated that the insects were collected by tomato in greenhouse belonged to 16 families, 7 orders. Aleyrodidae was the highest in pests and Aphelinidae was the dominant species in natural enemies. The results showed that the control period of main pests might be divided into two phases. In the early stage of tomato growth, biological control of natural enemies should be given. However, in the middle and later stage of tomato growth, insect community was extremely unstable with the increase of pests, so the chemical control should be adopted.

Key words: protected tomato, insect community, temporal dynamics, hierarchical cluster