Terrestrial true bugs (Hemiptera: Heteroptera) communities of selected phytocoenoses of the Trzebnica Hills

The study presents the results of the faunistic research of terrestrial true bugs of the Trzebnica Hills. The morphological and topoclimatic diversity of the Trzebnica Hills area makes the vegetation varied and well-sunlit slopes are used for orchard and vegetable cultivation. This area has been explored in terms of heteropterofauna only fragmentarily, which was the basis for conducting a faunistic study of it. Research of terrestrial true bugs fauna was conducted throughout tree seasons (2012-2014), on 23 research areas in the area of the municipalities of Oborniki Śląskie, Trzebnica and Wisznia Mała. Several methods have been applied to the collection of true bugs, the most effective of which has been found to be the sweeping net. To analyse the collected research material, indicators of species diversity have been used, as well as comparative analysis of clusters of true bugs inhabiting different areas and ecological and chorological analysis. The material collected in the Trzebnica Hills was designated to 188 species of terrestrial Heteroptera, belonging to 17 families and 118 genera. In total, one new species for the fauna of Poland – Psallus albicinctus (Kirschba um, 1856) and 126 new species for the fauna of the Trzebnica Hills have been shown. The trophic analysis showed a similar proportion of polyphagous species to mono- and oligophagous species. On the other hand, the chorological analysis showed that the Palearctic, Eurosiberian and Western Palearctic elements were the most represented ones. Based on the analyses, two main groups of true bugs communities associated with selected phytocoenoses were identified. In addition, in the landscape dominated by agrocenoses, an increased number of pests has been observed