Jia, K.F., Huang, J.B., Xu, Z.H., Long, X.J., Yan, X.S., & Wu, D.X. 2004 [Study on biology and utility of Aprostocetus sp. on Kermes nawai.]. Journal of Zhejiang Forestry College 21(1): 75-78.

Notes: The collection and observation of Aprostocetus sp. on Kermes nawai was conducted in Jiande, Zhejiang Province, China, during 1998-2002. The parasitoid occurred twice a year; the adults emerged in April to May and September to October. The adults of the first generation lay eggs into the body of adults; the adults of the second generation lay eggs into the body of nymphs in second instar. The adults of Aprostocetus sp. were released in chestnut (Castanea mollissima) forest in Quzhou to control K. nawai. Results showed that the population density of K. nawai decreased from 22.00 adults per 10 cm branch in April 2000 to 1.83 adults per 10 cm branch in April 2002. The insect pests were kept under control. The Chinese chestnut yield increased from 300 to 2250 kg/ha.