The ladybirds Cryptolaemus montrouzieri Mulsant and Pharoscymnus taoi Sasaji were firstly reported as the important enemies of Aspidiotus destructor Signoret in this paper.

Study on growth status of masson pine families damaged by Hemiberlesia pitysophila;

Control of Hemiberlesia pitysophila by interlogging and replanting acacia in longitudinal stripes in pine forests;

Interspecific competition between parasitoids of Hemiberlesia pitysophila;

Isolation and Screening of Microbial Strains against Hemiberlesia pitysophila Takagi;

Parasitic functional response of Coccobius azumai Tachikawa (Hymenoptera:Aphelinidae) to Hemiberlesia pitysophila Takagi (Homoptera:Diaspididae);

Spread and Distribution of Hemiberlesia pitysophila Takagi on the Different Tips of Pine;

The results in comprehensive experiment showed that,the controlling efficiency of Sunspray oil 7E and 9E to female adults of Unaspis yanonensis were 97 4% and 89 6% respectively at 10 day after spraying; those to female adults Chrysomphalus aonidum were 88 2% and 75 1%, and to Phyllocoptruta oleivora, 97 4% and 95 7% respectively.

Occurring three generations per year, Unaspis yanonensis and Quadraspidiotus perniciosus did harm to Castanea mollissima in the plantation with the altitude of 1 500～2 000m in Luquan.