EN
The purpose of this study has been to determine the quantitative and qualitative composition of spiders captured on winter wheat plantations. In 2008–2009, observations were carried out in north-eastern Poland, in the village Bartążek near Olsztyn (UMT DE 65). Spiders were caught every 7 days, from April to August, with a sweep net. One sample consisted of 100 beats with the sweep net at the height of the herbaceous plants. As a result, 245 spiders classified into 10 families, 29 genera and 30 species were caught on winter wheat plantations. The most numerous families were Araneidae, Linyphiidae, Tetragnathidae, Theridiidae and Thomisidae. The most numerous species were Mangora acalypha, Aculepeira ceropegia, Erigone atra and Tetragnatha pinicola. A special emphasis should be pay on the presence of Nusoncus nasutus a species of the family Linyphiidae, which is rare in Poland and currently listed on the Red List of Threatened and Endangered Species.