The authors present a general description of leaf mining insects of deciduous trees of green plantations. Biological peculiarities of adventitious leaf mining moth are highlighted. Their economic significance, biotic factors of decrease in population, tree species resistance to settlement by leaf mining insects, entomophagous of leaf mining moth are indicated. In particular, we have noted protection measures of trees from leaf mining insects. It is established that adventitious leaf mining moths from the order Lepidoptera (Lepidoptera) of the Gracillariidae family have recently spread in the green plantations of Ukraine: on horse chestnut – horse-chestnut leaf-miner Cameraria ohridella Deschka & Dimic; on black locust – locust leaf-miner Parectopa robiniella Clemens and Phyllonorycter robiniella Clemens; on the lime tree – lime leaf-miner Phyllonorycter issikii Kumata. These noted leaf mining moths cause significant damage to plantations, manifested in the loss of decorative effect, decreased photosynthetic surface, and the weakening of trees. In the Kharkiv region, these species have spread over the past decade. Today, detailed studies of the peculiarities of their distribution and development have not been conducted. Among the measures to limit the number of leaf mining insects in urban environments, attention should be paid to resistant forms and hybrids, raking and composting fallen leaves, using pheromone traps, spraying crowns, and injecting insecticides into tree trunks.