Dominance of tree species of pest insects in forest biocenosis

This article studied to determine the damage to ornamental and fruit trees caused by Yponomeuta malinellus Zell., Laspeyresia pomonella L., Erschoviella musculana Ersch., Recarvаria nаnella Schif., Aporia crataeqi L., Сossus-cossus L. belonging to the Lepidoptera family in agricultural crops and forests. Sesia apiformis and Paranthrene tabanifonnis Rott. were also identified by occurrence and tree species in forest areas. In the course of research, in 2019-2020, research was carried out on the study of the pest Synanthedon myopaeformis from the pests of Tashkent and Andijan forest farms. According to the results, in 2019, in Bostonliq, Qibray, Ghazalkent districts of Tashkent province of Uzbekistan, the level of pest occurrence in wild apple trees was 16%, and in 2020, this indicator reached 19%, and in the forest biocenosis of Andijan province, the occurrence of apple borer was 21% in 2019, in the observations of 2020 and it was determined that it reached 23%.