This study was conducted at fifteen wheat fields comprising “natural wooded areawheat”, Canola, Lentil, alfalfa and “monocultured wheat fields”, each of which had at least 10 da in Adıyaman province between the years of 2007-2009. In the studies, the density of overwintered adult Sunnpest (OAS), nypmh+new generation adult Sunnpest (NGAS) and parasitism rate of Sunnpest eggs were compared with one another at four different ecosystems. Sampling was made by using net and frame (1 4 m-2 ) once a week in March and June months with four replications at each field. As a result of these studies, at wheat fields near-by the natural woodland, OAS densities had the range of 0.6-2.0 OAS 10 net-1 , nymph densities ranged between 3.1-29.9 nymph+NGAS 10 net-1 and parasitism rates of Sunnpest eggs ranged between 32.4-65.5%. OAS densities ranged between 0.7-5.2 OAS 10 net-1 , parasitism rates of Sunnpest eggs varied between 0.0-43.5% and nymph density ranged between 17.9-70.0 nymph+NGAS 10 net-1 in wheat fields near-by Canola, Lentil, alfalfa fields, and the monocultured fields, respectively. It was concluded that OAS and nymph densities and parasitism rates varied from year to year and from ecosystem to ecosystem; however, parasitism rates were found higher in wheat ecosystem near-by the natural woodland compared with other ecosystems.