none Extent of natural larval parasitization by Campoletis chlorideae on Helicoverpa armigera varied from 5 to 41 per cent during 1999-2000 and 3 to 40 per cent during 2000-2001 on standard week basis. Parasitization recorded during 1999-2000 was 33 per cent, 37.3 per cent and 9 per cent during February, March and April, respectively. During 2000-2001 it was 36 and 5 percent in March and April, respectively. Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Habitat; Man made habitat; Land zones; Oriental region; Eurasia; Asia; India Helicoverpa armigera (Noctuidae); Hymenopteran parasites; Campoletis chlorideae; Cultivated land habitat; Uttaranchal; Pantnagar, seasonal incidence, chickpea crops Campoletis chlorideae (Ichneumonidae); Lepidopteran hosts; Helicoverpa armigera; Cultivated land habitat; Uttaranchal; Pantnagar, seasonal incidence, chickpea crops