EN
Observations of thrips were carried out in 2007–2009 in the Botanical Garden – Bydgoszcz and in three commercial nurseries: Braniewo, Kobrzyniec Nowy and Topola Królewska on ornamental grasses. The insects were collected either as samples taken directly from plants or using sweep net. Ten thrips species were recorded in plant samples and seven or eight in sweep net samples. Dominant species occurring on ornamental grasses were: Aptinothrips rufus, Chirothrips manicatus and Haplothrips aculeatus. The largest number of grass species was occupied by Aptinothrips rufus, A. stylifer, Anaphotrips obscurus, Chirothrips manicatus and Limothrips cerealium collected directly from plants. However among sweep net samples the most abundant were: Chirothrips manicatus, Haplothrips aculeatus, Limothrips cerealium and L. denticornis.