مطالعه سوسک‌های پوست‌خوار زیرخانوادهScolytinae و تعیین دامنه میزبانی آنها در باغ گیاه شناسی ملی ایران

The National Botanical Garden of Iran, with an area of 150 hectares and more than 4000 species of trees and shrubs, show high plant diversity. The garden as a valuable place to protect the biodiversity of plant species and genetic resources of the country. The presence of rare plant species and the high species diversity of plants criticized the importance of protecting the botanical Garden, so its protection is one of the main priorities of the country's natural resources. One of the most important threats to the National Botanical Garden of Iran is the invasion of pests and diseases which caused damage. Bark beetles are also one of the most important pests of forest trees, fruits and ornamental shrubsBark-beetles have a wide host range and often attack different parts of weak and under stress trees which caused avoidable damage. The National Botanical Garden of Iran is considered as suitable breeding ground for the outbreak of bark beetles due to its high plant diversity. Therefore, the successful management of pests is very important in protecting the botanical garden. Undoubtedly, the first step in the management of pests is their accurate identification. Considering the specificity of plant hosts, identification of bark beetles and their host plants is the main step in management and prevention of outbreaks. The present study was conducted with the aim of identification bark beetles and introducing the most important host plants in the National Botanical Garden of Iran. Due to this, sampling was done in 1402-1400 from weak plants in different parts of Iran's National Botanical Garden by direct observation and trapping. The collected samples, their damage effects and the host plant species were examined based on the most important morphological characteristics and identified as species level. In the results, 10 species of bark beetles Scolytus ensifer Eichhoff, 1881, Scolytus multistriatus (Marsham, 1802) ,Scolytus kirschi Skalitzky, 1876, Scolytus ecksteini (Butovitsch, 1929), Scolytus scolytus (Fabricius, 1775), Orthotomicus erosus (Wollaston, 1857), Phloeosinus aubei Perris, 1855, Scolytus rugulosus (Müller, 1818),Scolytus mali (Beschstein,1805), Hypothenemus eruditus westwood,1836 belonging to the genera Scolytus, Orthotomicus, Phloeosinus and 12 host plants species belonging to 6 families were introduced. It was also found that Scolytus ensifer and Orthotomicus erosus were the most abundant species among the identified species. The Host plant belong to the Rosaceae, Pinaceae, Ulmaceae families in the National Botanical Garden of Iran. The current list of host plant species has provided useful information to carry out management strategies of this group of pests and also prevent the entry and outbreak of pests which are in near parks and green spaces of botanical garden, especially Chitgar Forest Park