The population dynamics ofDiaphania indica(Saunders) (Lepidoptera: Pyralidae) was studied using partial life‐tables. The study revealed that April‐September was the peak period of incidence of the pest while November‐February was the lowest. The biotic mortality factors recorded in the present study were parasitism by the following:Apanteles taragamaeViereck,A. machaeralisWilkinson (Hymenoptera: Braconidae),Goniozus sensoriusGordh (Hym: Bethylidae),Trathala flavoorbitalis(Cam.) (Hym: Ichneumonidae),Elasmus brevicornisGahan (Hym: Elasmidae) andPhanerotoma hendecasisellaCam. (Hym: Braconidae). Among these,A. taragamaewas the key mortality factor ofD. indica.The study also revealed that only two of the six parasites exercised an important role in the population dynamics ofD. indica.The combined action of these two parasites from January to March and October to December was significant in keeping the population index lower than during the months when these parasites were absent.