Abstract: [Objective] By frequently investigating and collecting specimens of Cerambycidae adults, the species composition was compared in different times. Flight activity period of Cerambycidae adults were described scientifically and compared precisely, which is important for monitoring pest and making use of biological indicator species.[Method] Temporal dynamics of species diversity of Cerambycidae were systematically surveyed in broad-leaved Korean pine forest of Jiaohe Forestry Experimental Administration in southern Zhangguangcai Mountains, Jilin Province with flying intercepted traps from 2012 to 2013, and by systematically quantitative analysis of 11 different specimen collection time.[Result] a total of 1252 Cerambycidae adults specimens, belonging to 7 subfamilies, 41 genera, 64 species were caught by intercepted traps, including 44 rare species, accounting for 68.75% of the species number. Anaglyptus colobotheoidae, recorded in the first time in this area, was collected frequently. The species number and individual number were significantly different in different collection time, the peak time of the numbers of species and individuals of Cerambycidae adults occured from late June to middle July, and then the numbers gradually deceased to the lowest in early September. The similarity of Cerambycidae was the highest between June and July, and reached moderate similarity. The mean ordinal dates of Aseminae(220±10)and Disteniinae(220±10)adult emergence were significantly higher than that of other subfamilies. Cerambycinae(187±25), Lamiinae(187±24), Lepturinae(183±25), Aseminae(177±15) and Necydalinae(175±13) adult emergence were not significantly different in the mean ordinal dates.[Conclusion] The peak time of the eclosion and activity of Cerambycidae is in ordinal dates 170, 180, and 190, by which most of plants are in full blooms, thus many Cerambycidae adults with flower-visiting behavior begin activity, and Cerambycidae shows higher species diversity. The flight activity period distribution of Cerambycidae adults in this study is similar to that of Hanks et al. in Canada, and the peak time of flight activity period in this study is earlier. The beginning time of activation and duration are different for different species, which shows the diversity of the eclosion time and activity period of Cerambycidae. Thirteen species of Cerambycidae appear only in a sampling time, indicating that the activity time of these species adults are short, and sensitive to environmental change. The activation peak time of dominant species should receive more attention, especially for potential hazards species.

Key words: southern Zhangguangcai Mountains, broad-leaved Korean pine forest, Cerambycidae, species diversity, flight activity period, temporal dynamics