Chi, D.F, Yan, S.C., Zhao, X.H., & Wen, Z.H. 2003 The taxis of chalcid parasitoids to their host and analysis of the volatile from fixed first instar nymphs of Quadraspidiotus gigas (Thiem & Gerneck).. Journal of Northeast Forestry University 31(2): 20-22.

Notes: Four armed olfactory instrument was used to test the taxis of the parasitoids Encarsia gigas and Pteroptrix longiclava [Pteroptrix longiclava] to the body, to the scale, or to both the body and scale of the fixed first instar nymph of Quadraspidiotus gigas. The scale and the combination of both the body and scale were more attractive to the parasitoids than that of the body alone. Analysis of the chemical components of the volatiles from the body or scales using GC-MS method showed the presence of 9 compounds.