Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a serious pest that prefers fresh fruits native to Southeast Asia. In our study apple cider vinegar bait traps were used to capture and monitor the population dynamics of this native pest in Wuhu City, China, from May/June, 2017 to May, 2018. The research was conducted at 15 locations in two fruit orchards in Wuhu. Traps caught more adults in general in Meiling blueberry orchard than in Xicun mixed orchard, and the highest trap counts occurred near harvest time (October). Females had more mature eggs from September to November and the number of mature eggs declined thereafter. We found several non-crop hosts of this pest, which can provide food and reproductive resources for D. suzukii, are common in forests and field margins. By comparing the number of captured adults in the Meiling and Xicun orchards, we found that blueberry was preferred by D. suzukii among the fruits in our search. Fruit ripening time differed among crops and therefore fly populations moved between crop and non-crop habitats during the year or had varying population dynamics on different crops in different seasons. The D. suzukii population and the number of mature eggs decreased in summer and winter but increased in spring and autumn. Drosophila suzukii had higher survival rates on blueberry than other fruits and D. suzukii could use four non-crop species growing around the orchards as host plants.

Data of D.suzukii population dynamics is collected by using traps baited with apple cider vinegar to record seasonal variations in D. suzukii adult population density in two orchards.

Data regarding maximum and minimum temperature and precipitation were taken from Station 58431 (Nanling) and Station 58338 (Wuhu) for the Meiling and Xicun sites, respectively. Weather data were downloaded from China Meteorological Data Service Center (http://data.cma.cn).

Data of the mature numbers is collected by dissecting adult female D.suzukii.

All above data is original data.

The data for anyone who want to know the D.suzukii population dynamics in different season throughout the year. And who wants to know what kind of crops is more infested by D.suzukii.