Objective To understand the population composition,seasonal dynamics and infestation of cockroaches in Xi'an,so as to provide the scientific basis for cockroach control.Methods The sticky trap method was performed for the investigation.Results A total of 135 cockroaches were captured,including 130 Blattella germanica and 5 Periplaneta brunnea.The average density of cockroaches was 0.032 cockroaches per piece,and the average adhesion rate was 1.51％.Cockroach density and adhesion rate were high in farmer's market and catering industry.The distribution of cockroach density and adhesion rate in different seasons showed a unimodal curve,with a peak in September.The annual average cockroach density in urban areas was lower than that in suburban areas.Conclusion Farmers'markets and catering industries were still the places highly infested by cockroaches,which needed more attention.
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