Hemiberlesia pitysophila Takagi is a kind of dangerous forest quarantine pest insects, which do great harm to pine. Coccobius azumai Tachikawa (Hymenoptera: Aphelinidae) is an important natural enemy in controlling Hemiberlesia pitysophila Takagi. On the base of the introduction of Coccobius azumai Tachikawa from Japan into Guangdong Province in 1980's, the parasitoid was introduced again in May 2002, with the total number collected of 5718. After releasing for more than one year, Coccobius azumai Tachik...