Chilocorus kuwanae Silvestri, an important predator of Unaspis yanonensis (Kuwana), overwinters gregariously in the adult stage. In the case of overwintering, the small mass assemblages of this Coccinellid are commonly found on such places where the fluctuation of temperature is slight, the wind is not strong and the prey are easy to find. They prefer small twigs or branches of citrus trees (girth 5-10 cm) far above the ground. Even in the winter, they become active and crawl about outside the hibernating site when the maximum daily temperature arises up to 10℃ and begin to feed Unaspis yanonensis when the temperature becomes 12℃. It is possible or desirable to make an artificial hibernating site for this beneficial Coccinellid by wrapping the citrus twigs with clothes (cloth is the best material, followed by a straw-mat).
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