Abstract A survey for the presence of Hyalestes obsoletus Signoret in 2010 confirmed a dramatic increase in number of captured individuals at observed localities in agriculturally important areas in southern Moravia, Czech Republic. Population density from the end of June to the middle of July, varies with locality. A preferred host plant Urtica dioica L. was present. Average percentage of stolbur phytoplasma positive H. obsoletus specimens varied from 31 to 59%

Dana Safarova

Martin Stary

Milan Navratil