Parasitism on <i>Helicoverpa armigera</i> larvae collected from the tomato fields situated in the village of Mawiongsun in East Khasi Hills District of Meghalaya, was recorded during the fruiting stage. The total incidence of parasitism (%) for the entire study period in all the plots was estimated to be 14.47%. and 91% of parasitism of host larvae was due to a tachinid fly, <i>Servillia transversa</i>,Tothill.