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Actual phytosanitary state of park cenoses of the Southern Coast of the Crimea

The objective of the research is to assess the species diversity of entomoacarocomplex of phytophagans of park cenoses of the Southern Coast of the Crimea, to identify dominant species and to determine the factors controlling their number and distribution. The research methods are the following: biological survey, visual inspection, pheromone traps, the definition of species by morphological characteristics. During the period from 2005 to 2018, the species composition of the entomoacarocomplex of phytophagans of ornamental crops in the parks of the Southern Coast of the Crimea has changed significantly under the influence of abiotic factors, anthropogenic load, development of tourism, business relations, increase in introduction works, change in the assortment of pesticides. Currently, the fauna of arthropods in the parks is represented by 55 species of phytophagans from 7 orders and 23 families, which include aboriginal, introduced and invasive species. Systematically phytophagans are sorted as follows: order Homoptera - 30 species, Hemiptera - 2, Hymenoptera - 1, Lepidoptera - 10, order Diptera - 2, Coleoptera - 7, Acariformes - 3 species. Homoptera order remains the most numerous in the number of species, which accounts for 54.5% of the total number of phytophagans. The dominant species among the local species are euonymus scale, viburnum scale, osier spittlebug, pistache marginal gall aphids, twospotted spider mite. Uncontrolled import of planting material from the European countries has led to the emergence of invasive species with high bio-potential, environmental plasticity, aggressiveness and causing invasions in the parks of the Southern Coast, which leads to the death of plants of local flora and introducents. Currently, 12 invasive species of pests have adapted on the territory of the Crimean parks. The process of invasions continues; it will lead to significant changes in the species composition of phytophagans.