The invasive insect species in the Oltenia region (Romania).
Given the generally negative impact of non-native organisms, and particularly the arthropods, in the ecosystems of a given area, the paper presents new information about the presence and distribution of invasive insect species on woody plants in the forests and green spaces of Oltenia region. Starting from a list of forest insect species already reported in Romania and in the neighbouring countries, and assumed to be present in the south-western part of the country, a network of monitoring points was set up, fixed or along the routes, with known geographic coordinates. The detection of these species was achieved either by the presence of insects in the adult stage, captured in the traps baited with different attractants (pheromones or kairomones) in the case of beetles, or by the characteristics of the attack and the presence of insects on the attacked organs, in the case of the other insect groups. 18 species of invasive insects were found, of which 6 species were already reported in Oltenia and 12 species can be considered new reports in Oltenia region.