Wing-type pheromone traps were used to monitor flight activity of the sunflower moth,Homoeosoma electellum(Hulst), in Kansas during 1986 to 1988. Traps were maintained at Belleville, Hays, Hesston, Hutchinson, and Manhattan in sunflower (Helianthus annuusL.) plots planted at three dates from mid-May to mid-July. Traps were set in the fields before blooming of the crop and monitored until plant maturity. Moths were trapped from mid- to late July until the end of August in 1986 and late September in 1987. The maximum number of moths was trapped from mid-July to mid-August at most locations in both years. Very few moths were caught during 1988, when adults were in the area from late July until the second week of September. Number of larvae per head was higher in plots blooming around peak moth appearance at most places in all three years. Number of larvae per head were lower in plots blooming after mid-August, when fewer moths were also trapped. The pheromone traps were efficient tools to detect the presence of the pest in the field. A significant relationship was found between number of moths in traps and larvae per head during 1986 and 1987 but not in 1988.