Population dynamics of wheat aphids in different agricultural landscapes Effects of landscape structure and key landscape factors on aphids-parasitoids- hyper parasitoids populations in wheat fields Effect of plant alcohol extracts on vegetable aphids and their parasitoids Controlling effect of parasitoids on population of vegetable leaf miner Liriomyza sativae Blanchard Ecological mechanisms and prospects for utilization of toxins from parasitic hymenopteran Studies on the Natural Enemies of Gypsy Moth,Lymantria dispar(Lep.:Lymantriidae)in Dayi,Sichuan Province Suppressive effect of plant secondary substances and ecological measures on Liriomyza sativae population STUDIES ON INSECT NATURAL ENEMY DIVERSITY OF GYPSY MONTH AND THEIR ROLE IN NATURAL CONTROL OF THE PEST (LEPIDOPTERA: LYMANTRIIDAE) IN BEIJING AREA Spatial pattern of Sitodiplosis mosellana and its egg parasitoids mixed population. Host adaptations of the generalist parasitoids and some factors influencing the choice of hosts Ten Species of Chalcidoids Reared from Bamboo Gall with Notes on One New Record Species INVESTIGATION ON THE PARASITOIDS OF WILD MULBERRY SILKWORM Investigation on the Parasitoids of Orgyia ericae Effect of plant extracts and some pesticides on survival, emergence and para-sitism of the aphid parasitoids Aphidius gifuensis Ashmead and Diaeretiella rapae M‘Intosh