Abstract:The green lacewing, Chrysoperla sinica (Tjeder), a common species in China, is known as an important natural enemy attacking aphids, mites and many lepidopteron pests. Under natural conditions, it overwinters as adults in facultative diapause. Previous field surveys conducted in Shandong showed that adult population of C. sinica was high in the early winter, and low in the coming spring, indicating that high mortality occurred during the winter. To determine if the winter‘s low temperature and relative ...