Trophic Evolution of Southern Green Stink Bugs (Nezara viridula l.) in Western Part of Romania

Abstract

Nezara viridula L. (Hemiptera:Pentatomidae) is a relative a invasive species, highly poliphagous, species of solanaceous, legumes, cruciferous, malvaceous, grasses and other plants are affected. Considering that the insect which make the subject of this scientifically paper is a species detected in our country but unregistered and un-localized as a dangerous species we want to bring to attention potential spread and adaptation to new plant species, especially legumes and ornamental plants. Observations were made in Timis county in the western part of Romania (Timis), during the years 2013 and 2014. It was taken under observation by three types of plants (tomato crop, green space and fruit tree plantation). The observations on plants have shown that N. viridula affected all four varieties of tomatoes, especially on fruits, both green and mature stage. In green space only adults and nymphs was observed on follow ornamental plants: Syringa vulgaris, Lonicera japonica, Hibiscus sp. and Magnolia liliiflora. Comparative study between Prunus persica and Prunus persica var. nucipersica made in fruit tree plantation has revealed that insect affected only the last one. N. viridula is a dangerous species for Romania with high expansion potential on new host plant and new surfaces.