The present investigations were carried out on seasonal abundance of neem looper, Cleora cornaria (Geometridae, Lepidoptera). It was feeding mainly on green leaves and tender branches of neem trees at Talwandi Sabo (Bathinda), Punjab. The results obtained during investigation shown the significant correlation between adult population and maximum-minimum temperatures. The increasein relative humidity and rainfall during June- July leads to decrease in the adult population of C. cornaria. Hence, this information will be helpful in development of proper management practices against C. cornaria.