Seasonal abundance of Pectinophora gossypiella was studied by using sex pheromone traps at two different sites in Dharwad, Karnataka during 1989-91. Emergence of P. gossypiella commenced at the end of second week in October. During 1989/90, five peaks (first and third weeks in November, third week in December, and first and third weeks in January) were observed at one site. A positive and significant (r = 0.582) correlation was noticed between trap catches and larval population. A positive and significant (r= 0.575) correlation was also established between trap catches and field infestation.